Consolidated Relief Valve

In-house Review

SRV-1General Information

General Information (SRV-1/Q2.02)GI.1

Protection of personnel and equipment is the paramount concern inselection of Safety Relief Valves for plant operating systems. Only the mostreliable Safety Relief Valves should be considered for such a crucial role.The CONSOLIDATED valve line has consistently been recognized as a leaderin the pressure relief valve field since its introduction over one hundredyears ago. Leadership in design, manufacture and product service andsupport is founded on a reputation for unrelenting dedication to productinnovation and improvement. A continuing program to keep abreast ofconstantly changing requirements of the valve market and a concentrated

Research and Development effort assure strong support for customerneeds. The resulting high quality of design and workmanship ofCONSOLIDATED Valves gives assurance of maximum protection and longertrouble-free life for the user.CONSOLIDATED provides maximum service to its valve customers through aworldwide factory trained sales force. These personnel are technicallytrained and available to provide guidance in sizing and selection of propervalves for specific applications as well as assistance in solving valveproblems as they arise.

1900The 1900 Series of pressure relief valvesprovides a wide scope of design in bothpressure and temperature ranges. ASME B &PVC, Section VIII certified for vapor, liquidand steam applications meets mostoverpressure protection requirements oftoday’s industry.

1982ASME B & PVC, Section VIII certifiedthreaded connection pressure relief valvefor vapor and steam service applications.

19000The 19000 Series of pressure relief valves areASME B & PVC, Section VIII compliant forliquid service applications. Seat tightness,blowdown and capacity on all types of mediameets the industry needs for overpressureprotection in chemical, petrochemical, refinery,power generation (nuclear and conventional)and other commercial applications.

820000The 820000 Series of pressure relief valvesare ASME B & PVC, Section VIII compliantfor liquid service applications. This designprovides performance characteristics thatmeet many of the liquid service applicationsin today‘s industrial markets.

1900 / P1 & P3Standard in both types, the patentedThermodisc™ Seat is designed for a highdegree of seat tightness. Designed for ASME B& PVC, Section I organic fluids, flashing waterand limited steam applications. (The P1 andP3 series designs are not for ASME B & PVC,Section I Boiler Drum, Superheater orReheater applications.)

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.1Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.3Selection Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.4Scope of Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.5Valve Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.7Computer Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.8How to Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.9Valve Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.15After Market Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.24Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GI.25

NOTE: Colors in the bars above the valves are consistent with tabs throughout this catalog.

Table of Contents

Spring Actuated Pressure Relief Valves

SRV-1General Information

Consolidated Safety Relief Valves General Information (SRV-1/Q2.02)GI.2

A staff of factory trained Field Service Technicians are available for ”on-the-job“ emergencies, start-ups, and or turn-arounds. Field ServiceTechnicians are strategically located to be available to CONSOLIDATED’Scustomers both domestic and foreign.Rigid manufacturing standards controlled by an ASME approved QualityControl Program ensure that each valve will be manufactured in accordancewith established design criteria and tested for functional performance.CONSOLIDATED is among a select number of U.S. companies holding ISO9001 Quality System Certification (Registration). Our QualityManagement System, Design Control, and Manufacturing Facilitymaintain compliance to industry standards through various certificationand registration agencies. This quality controlled manufacturing and testprogram assures that each valve manufactured will provide long andreliable service.CONSOLIDATED also holds a Safety Quality License for export of pressurerelief valves to the People’s Republic of China. The CONSOLIDATED 1900spring loaded and 3900 series pilot operated safety relief valve isincluded among the list of products covered by the Safety Quality License.

A Green Tag® certification is attached to each valve following final testand inspection as evidence of CONSOLIDATED’S emphasis on Quality. OurGreen Tag® serves as a reminder that each CONSOLIDATED valve meets orexceeds the stringent performance and overpressure protectionrequirements set forth by the ASME Code, and backed by CONSOLIDATED.The symbol is also used by our Green Tag® Centers located worldwide.These centers are fully certified by us as CONSOLIDATED valve assembly andrepair facilities. In North America, they also meet or exceed ASME andNational Board standards for pressure relief valve assemblers and valverepair (VR) shops.CONSOLIDATED spring loaded and pilot operated safety relief valves havebeen flow tested in accordance with ASME Code rules to establish ratedcapacities. Capacities specified in this catalog have been certified by theNational Board of Boiler and Pressure Vessel Inspectors and are listed inthe National Board publication “Pressure Relieving Device Certifications”.

2900 PVPop Action, Non-Flowing

Pilot Operated Safety Relief Valve

Pop Action, Non-FlowingPilot Operated Safety Relief Valve

The CONSOLIDATED 2900 PV pop action non-flowing pilot provides excellent performance withfull lift at set pressure with minimal blowdown.

Modulating Action, Non-FlowingPilot Operated Safety Relief ValveThe CONSOLIDATED 2900 MV Pilot Operated SafetyRelief Valve is a non-flowing modulating pilotvalve that provides exceptional performance and stable operation.

Modulating Action, Non-FlowingPilot Operated Safety Relief ValveThe CONSOLIDATED 3900 MV Pilot OperatedSafety Relief Valve is a non-flowing modulatingpilot valve that provides exceptionalperformance and stable operation.

3900 PV

The CONSOLIDATED 3900 PV pop action non-flowing pilot provides excellent performance withfull lift at set pressure with minimal blowdown.

Pop Action, FlowingPilot Operated Safety Relief Valve

13900

The CONSOLIDATED 13900 pilot operatedsafety relief valve series is designed tocontribute to the overall efficiency andprofitability of plant operations.

3900 MV

2900 MV

Pilot Operated Pressure Relief Valves

NOTE: All Pilot Operated Relief Valves are ASME B & PVC, Section VIII Code compliant.

SRV-1Design Description


Conventional Safety Relief ValveConventional safety relief valves are for applications where excessive variableor built up back pressure is not present in the system into which the valvedischarges. The operational characteristics (opening pressure, closing pressureand relieving capacity) are directly affected by changes of the back pressureon the valve.

Description of Safety Relief Valve Designs

Balanced Safety Relief ValveA balanced safety relief valve is a pressure relief valve which incorporatesmeans of minimizing the effect of back pressure on the operationalcharacteristics. (Opening pressure, closing pressure and relieving capacity)Comment: These design valves are typically equipped with a bellows whichbalances or eliminates the effect of variable or built up back pressure thatmay exist in the system into which the safety relief valve discharges.

Pilot Operated Safety Relief ValveA pilot operated safety relief valve is pressure relief valve in which the majorrelieving device is combined with and is controlled by a self-actuated auxiliarypressure relief valve.Comment: Pilot operated relief valves are available in both pop action andmodulating action designs. These valves are suitable for applications where itis desired to maintain system operating pressure very close to the valve setpoint (operating pressure).

SRV-1Selection Considerations


CONSOLIDATED offers a broad range of pressure relief valve solutions, providing reliable protection for plant personnel and equipment. CONSOLIDATED achievesthis goal by offering the most efficient solution for any specific pressure relief valve application. In general, most situations can be handled with either apilot operated or a spring-loaded valve design. CONSOLIDATED offers both of these alternative solutions using world-class designs, and offering unparalleledapplication expertise and support. The following chart provides some basic guidelines on selecting the right solution for your application. Please consultwith your local CONSOLIDATED sales office or local distributor to select the best and most economical solutions for your specific pressure relief applications.

CONSOLIDATED strives to provide the best available information, data and assistance to its customers inthe selection and application of our products. It is impractical, however, for CONSOLIDATED personnel tobe trained in all systems and processes in which CONSOLIDATED products might be used. Ultimateresponsibility remains with the customer as the process owner or designer.

Valve Selection Considerations

Pilot Valves (POSRV) vs. Spring Loaded Valves (SRV)

POSRV > K orifice **** POSRV > K orifice

* Heat Exchanger required.** Remote Sensing required.

*** Modulator required.**** 2900 has same center-to-face dimensions as 1900.

Temperature is greater than 505°F or less than -40°F*

Design Pressure is greater than 3750 psig

Set Pressure is greater than 3750 psig or less than 15 psig

Viscosity is greater 28 cp

Variable Back Pressure is greater than 80% for liquid applications or 60% for gas or vapor applications

Operating/Set Pressure gap is less than 7% for gas and vapor applications or 12% for liquid applications

Inlet Pressure Drop exceeds 3% of set pressure**

Metal Seats are required (POSRV - Main Valve only)

Soft Seats are required

Multi-Overpressure scenarios***

There is high potential for the valve to be subjected to shock or high vibration

Polymerization will occur

Chemical compatibility with elastomers is a problem

Installation Clearance is a primary issue

CONSOLIDATED Pressure Relief Valves Designs

2900 POSRV 3900 POSRV SRVIf:

one POSRV needed one POSRV needed multiple SRV’s needed

SRV-1Scope of Design


ValveType1

Type

Inlet

Standard End Connections 2 Materials3 ASME Codes4

Outlet Standard Sec. I Sec. III Sec. VIII

Size Type Size Body&

BonnetCoverPlate Trim Steam Steam

&Vapor

Liquid LiquidSteam&

Vapor

Applications

NOTES: 1 For pressure and temperature ratings refer to color coded product sections. Flanged valves are provided with ASME standard flanges.2 Flanged inlets are available with a selection of ASME facings. Refer to the color coded product sections for description.3 Refer to the color coded product sections for optional materials that are available. Contact the factory for special material requirements.4 Pressure relief valves are ASME approved for application of the appropriate code symbol stamp.

1900 Flanged 1" - 12" Flanged 2" - 16" C.S. N/A S.S. X X X X1900/P Flanged 1" - 8" Flanged 2" - 10" C.S. N/A S.S. X X X1982 Threaded 1/2" - 2" Threaded 3/4" - 2-1/2" C.S. N/A S.S. X X X X1982 Flanged 1" - 2" Threaded 1" - 2-1/2" C.S. N/A S.S. X X X X

19000 Threaded 1/2" - 2" Threaded 1" - 2-1/2" C.S. N/A S.S. X X X X19000 Flanged 1/2" - 2" Flanged 1" - 2-1/2" C.S. N/A S.S. X X X X19000 Socket Weld 1/2" - 2" Socket Weld 1" - 2-1/2" C.S. N/A S.S. X X X X

19096MBP Threaded 1/2" - 1" Threaded 1" C.S. N/A S.S. X X X X19096MBP Flanged 1/2" - 1" Flanged 1" C.S. N/A S.S. X X X X19096MBP Socket Weld 1/2" - 1" Socket Weld 1" C.S. N/A S.S. X X X X

820000 Threaded 1/2" - 2" Threaded 1" - 2-1/2" Bronze N/A Bronze X820000 Flanged 1" - 2" Threaded 1" - 2-1/2" Bronze N/A Bronze X

2900 Flanged 1" - 8" Flanged 2" - 10" C.S. S.S S.S. X X3900 Flanged 1" - 10" Flanged 2" - 10" C.S. C.S. S.S. X X X X

13900 Flanged 16" - 20" Flanged 18" - 24" C.S. C.S. S.S. X

SRV-1Scope of Design


Pressure / Temperature Ranges

ValveType Type

Temperature RangeSetPressureRange(psig)

Minimum°F (°C)

Maximum°F (°C)

NOTES

NOTES: 1 Pressure and temperature ranges are limited by size, media, and materials.Refer to product section for specific pressure temperature ratings by size andmaterial selections.

2 Used for steam and organic vapor applications only.3 Used for liquid applications only.

1900 Flanged 5-6250 -450 (-267) 1500 (815) 11900/P Flanged 5-6000 90 (32) 850 (454) 1, 21982 Threaded 10-500 -20 (-28) 800 (426) 11982 Flanged 10-500 -20 (-28) 800 (426) 1

19000 Threaded 5-8000 -450 (-267) 1100 (593) 119000 Flanged 5-6250 -450 (-267) 1100 (593) 119000 Socket Weld 5-8000 -450 (-267) 1100 (593) 1

19096MBP Threaded 50-2000 -300 (-184) 600 (315) 119096MBP Flanged 50-2000 -300 (-184) 600 (315) 119096MBP Socket Weld 50-2000 -300 (-184) 600 (315) 1

820000 Threaded 15-500 -20 (-28) 400 (204) 1, 3820000 Flanged 15-500 -20 (-28) 400 (204) 1, 3

2900 Flanged 15-3750 -450 (-267) 1200 (648) 13900 Flanged 15-3750 -40 (-40) 505 (262) 1

13900 Flanged 50-300 250 (121) 550 (288) 1

SRV-1Valve Selection


How to Select a Spring Loaded orPilot Operated Safety Relief Valve

The following guidelines should be followed when making a valve selection.

Step 1Calculate the proper valve orifice area (Ac) requirements. Refer to Valve Sizing Section of this catalog or use CONSOLIDATED SRVS.6 Computer AssistedSizing Program. Utilize the following information:• Operating pressure• Set pressure• Operating temperature• Relieving temperature• Design temperature• Type of fluid• Required relieving capacity• Allowable overpressure

(Choose one)- ASME Section VIII, Single Valve (10% overpressure)- ASME Section VIII, Multiple Valve (16% overpressure)- ASME Section VIII, Fire Sizing (21% overpressure)- ASME Section I, Single Valve (3% overpressure) (1900/P1 & P3)

• Back pressure- constant- variable (built up or super-imposed)

• Gas and vapors- compressibility- molecular weight- density- ratio of specific heat

• Liquids- specific gravity- viscosity

Step 2Based on calculated orifice size, determine which pressure relief valve will meet the orifice area requirements.

Step 3For spring loaded valves determine if back pressure limits are exceeded and if a bellows is required. If a bellows is required, you must select a 1900 flanged valve.

Step 4For spring loaded valves check the operating pressure requirements against the valve set pressure requirements. If the operating pressure exceeds90% of the set pressure, or if the differential is less than 25 psig, review the possibilities for need of a soft seat O-Ring. If an O-Ring seat is notacceptable, review the system and valve setting parameters to achieve proper differential pressure.

SRV-1Computer Sizing


SRVS.6 is a Windows-based sizing program for safety relief valves that can be used with the Windows operating systems. This software is alsonetwork compatible.

This program includes multi-lingual capability, the ability to save files in a standard Windows format, and the ability to print to any printer configuredfor the Windows system. The printout options for each valve selection include a detailed datasheet, a certified drawing showing dimensions, weight,materials, and the API designation, if applicable, and a calculation sheet showing the applicable formulae used in the area or capacity calculation.Each selected valve is completely configured to match the order entry configuration, as well as the nameplate designation. Other features makingthis program the easiest and most convenient sizing program available include the capabilities of copying tag numbers, editing the selected valveoptions, and resizing tag numbers.

This sizing program may be used for the sizing and selection of the 1900, 1982, 2900 MV, 2900 PV, 3900 MV, 3900 PV, 19000, and 820000valve types. Available sizing methods include single fluid, gas or liquid, sizing at 10% overpressure, multi-fluid sizing at 10% overpressure, and fire-sizing based upon required capacity, vessel dimensions, or vessel area at 21% overpressure. If necessary, multiple valves may be selected for asingle application, using the 16% overpressure factor for the low set valve. Diers (two phase flow) sizing per API 520, Part I, Appendix D, October1999 is also included.

Included in this software are the checks for ASME Sec. VIII compliance, ASME B16.34 pressure temperature limits, API pressure and temperaturelimits (if applicable), O-Ring and bellows requirements, spring chart limitations, and steam chart correlations. The output will include noise andreaction force calculation values, outline dimensional drawing (installation dimensions), bill of materials for valve component parts, as well as detailedvalve selection criteria.

An extensive help file is included with this software. Help text is provided for every field and form. In addition, technical information on Coderequirements, applicable industry standards, and general catalog information is included.

The CONSOLIDATED SRVS.6 Computer Assisted Sizing Program may be obtained through your local Green Tag Center (GTC®) or from your CONSOLIDATEDSales Representative.

SRVS.6 Computer Assisted Sizing Program

SRV-1How to Order


How to Order a 1900 Safety Relief Valve

Specification Sheet

General1. Item Number: 2. Tag Number: 3. Service, Line or Equipment No:4. Number Required:

Basis of Selection5. Code:

❑ ASME Sec. I (1900/P series only)❑ ASME Sec. III❑ ASME Sec. VIII❑ OTHER Specify:

6. Comply with API 526: ❑ YES ❑ NO7. ❑ Fire ❑ OTHER Specify:8. Rupture Disk: ❑ YES ❑ NO

Valve Design9. Type: Safety Relief10. Design: ❑ Conventional ❑ Bellows

❑ Closed Bonnet ❑ Yoke/Open Bonnet❑ Metal Seat ❑ Resilient Seat❑ API 527 Seat Tightness❑ OTHER Specify:

Connections11. Inlet Size: Rating: Facing:

Outlet Size: Rating: Facing:12. ❑ OTHER Specify:

Materials13. Body/Bonnet:14. Guide/Rings:15. Seat Material:

Metal:Resilient:

16. Bellows:17. Spring:18. Comply with NACE MRO 175 ❑ YES ❑ NO19. OTHER Specify:20. Cap and Lever Selection

❑ Screwed Cap (Standard) ❑ Bolted Cap❑ Plain Lever ❑ Packed Lever ❑ Gag

21. ❑ OTHER Specify:

Service Conditions22. Fluid and State:23. Required Capacity per Valve & Units:24. Molecular Weight or Specific Gravity:25. Viscosity at Flowing Temperature & Units:26. Operating Pressure & Units:27. Blowdown: ❑ Standard ❑ Other28. Latent Heat of Vaporization & Units:29. Operating Temperature & Units:30. Relieving Temperature & Units:31. Built-up Back Pressure & Units:32. Superimposed Back Pressure & Units:33. Cold differential Test Pressure & Units:34. Allowable Overpressure in Percent or Units:35. Compressibility Factor, Z:36. Ratio of Specific Heats:

Sizing and Selection37. Calculated Orifice Area (square inches):38. Selected Orifice Area (square inches):39. Orifice Designation (letter):40. Manufacturer:41. Model Number:42. Vendor Calculations Required: ❑ YES ❑ NO

Page of

Requisition No. Job No. Date Revised By

SRV-1How to Order


How to Order a 1982 or 19000Safety Relief Valve

Specification Sheet



❑ ASME Sec. III❑ ASME Sec. VIII❑ OTHER Specify:

6. ❑ Fire ❑ OTHER Specify:7. Rupture Disk: ❑ YES ❑ NO

Valve Design8. Type: Safety Relief9. Design:

❑ Metal Seat ❑ Resilient Seat❑ API 527 Seat Tightness❑ OTHER Specify:

Connections10. Flanged

Inlet Size: Rating: Facing:Outlet Size: Rating: Facing:

11. ThreadedInlet ❑ MNPT ❑ FNPTOutlet ❑ MNPT ❑ FNPT


Page of


Materials13. Base:14. Bonnet:15. Guide/Rings:16. Seat Material:

Metal:Resilient:

17. Spring:18. Comply with NACE MRO 175 ❑ YES ❑ NO19. OTHER Specify:20. Cap and Lever Selection

❑ Screwed Cap (Standard) ❑ Bolted Cap❑ Plain Lever ❑ Packed Lever ❑ Gag




SRV-1How to Order


How to Order an 820000Safety Relief Valve

Specification Sheet



❑ ASME Sec. VIII❑ OTHER Specify:

6. ❑ OTHER Specify:7. Rupture Disk: ❑ YES ❑ N0

Valve Design8. Type: Safety Relief9. Design:

❑ API 527 Seat Tightness❑ OTHER Specify:

Connections10. Flanged

Inlet Size: Rating: Facing:11. Threaded

Inlet - MNPTOutlet - FNPT

Materials12. Body/Bonnet: Bronze13. Guide: Bronze14. Seat Material: Bronze15. Spring: 17-7 PH16. Cap and Lever Selection

❑ Screwed Cap (Standard)❑ Plain Lever ❑ Packed Lever ❑ Gag




Page of


SRV-1How to Order


How to Order a 2900 POSRVPOSRV Specification Sheet


Basis of Selection5. Code: ASME VIII Stamp Required: ❑ YES ❑ NO

❑ OTHER Specify6. Comply with API 526: ❑ YES ❑ NO7. ❑ Fire ❑ OTHER Specify:8. Rupture Disk: ❑ YES ❑ NO

Valve Design, Pilot9. Design Type: Pilot10. Number of Pilots:11. Pilot Action: ❑ Pop ❑ Modulating12. Pilot Sense: ❑ Internal ❑ RemoteNote 1

13. Seat Type: Resilient14. Seat Tightness: ❑ API 527 ❑ OTHER

❑ Specify:15. Pilot Vent: ❑ Atmosphere ❑ Outlet

❑ OTHER Specify:

Valve Design, Main Base16. ❑ Metal Seat ❑ Resilient Seat17. Bellows: ❑ YES ❑ NO

Connections18. Inlet Size: Rating: Facing:19. Outlet Size: Rating: Facing:20. ❑ OTHER Specify:

Materials, Main Valve21. Body:22. Nozzle:23. Seat O-Ring:24. Disc:25. Piston Seal:26. Other O-Rings:27. Guide:28. Cover Plate:

Materials, Pilot29. Body/Bonnet:30. Internals:31. Seals:32. Tubing/Fittings:33. Spring:34. Comply with NACE MR0175: ❑ YES ❑ NO35. ❑ OTHER Specify:

Accessories36. External Filter: ❑ YES ❑ NO37. Lifting Lever: N/A38. Field Test Connection: ❑ YES ❑ NO39. Backflow Preventer: ❑ YES ❑ NO40. Manual Blowdown Valve: ❑ YES ❑ NO41. Heat Exchanger (For High and Low Temperature Applications):

❑ YES ❑ NO42. Dirty Service: ❑ YES ❑ NO43. ❑ OTHER Specify:



Heat Exchanger65. Sizing Required:66. Back Pressure Restrictions on Temperature:67. Set Pressure (psig):68. Specific Volume of Media at Inlet Conditions (ft3/lbm):69. Entropy of Media at Inlet Conditions (btu/lbm*˚R):70. Temperature of Ambient Air (˚F) (Min./Max.):71. Media Temperature Before it Enters the Heat Exchanger (˚F):

Remote Sensing72. Sizing Required:73. Set Pressure (psig):74. Orifice Selection:75. Fluid Density of Media in the condensed State (lbm/ft3):76. Length of Sensing Line (ft)NOTE 1:77. Equivalent Length of Sensing Line for Valves, Elbows, Tees, etc.:78. Total Change in Height (ft):

Notes:1 To assure proper valve operation when pilot is remotely sensed use

3/8" diameter tubing for lengths up to ten feet. Contact factory forproper size of tubing when sensing line exceeds ten feet.

Page of


SRV-1How to Order


How to Order a 3900 POSRV

POSRV Specification Sheet


Basis of Selection5. Code: ASME VIII Stamp Required: ❑ YES ❑ NO

❑ OTHER Specify6. Comply with API 526: ❑ YES ❑ NO7. ❑ Fire ❑ OTHER Specify:8. Rupture Disk: ❑ YES ❑ NO

Valve Design9. Design Type: Pilot10. Number of Pilots:11. Pilot Action: ❑ Pop ❑ Modulating12. Pilot Sense: ❑ Internal ❑ RemoteNOTE 1

13. Seat Type: Resilient14. Seat Tightness: ❑ API 527 ❑ OTHER ❑ Specify:15. Pilot Vent: ❑ Atmosphere ❑ Outlet

❑ OTHER Specify:

Connections16. Inlet Size: Rating: Facing:17. Outlet Size: Rating: Facing:18. ❑ OTHER Specify:

Materials, Main Valve19. Body:20. Nozzle:21. Seat O-Ring:22. Disc:23. Disc Seal:24. Other O-Rings:25. Guide:26. Cover Plate:

Materials, Pilot27. Body/Bonnet:28. Internals:29. Seat: Seals:30. Tubing/Fittings:31. Spring:32. Comply with NACE MR0175: ❑ YES ❑ NO33. ❑ OTHER Specify:

Accessories34. External Filter: ❑ YES ❑ NO35. Lifting Lever: N/A36. Field Test Connection: ❑ YES ❑ NO37. Backflow Preventer: ❑ YES ❑ NO38. Manual Blowdown Valve: ❑ YES ❑ NO39. Dirty Service: ❑ YES ❑ NO40. ❑ OTHER Specify:



Notes:1 To assure proper valve operation when pilot is remotely

sensed use 3/8" diameter tubing for lengths up to tenfeet. Contact factory for proper size of tubing whensensing line exceeds ten feet.

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SRV-1How to Order


POSRV Specification Sheet

General1. Number of Valves: 2. Size of Valve Inlet:3. Type Number of Valve:4. CONSOLIDATED Manufacturer:5. Body Material:6. Trim Material (if any other than standard is required):

7. O-Ring Seat Material8. Set Pressure:9. Operating Temperature and Relieving Temperature:

10. Back Pressure, if any (indicate if Constant or Variable):

11. Required Capacity:12. Lading Fluid:13. Allowable Overpressure:14. Density

a) Vapor - molecular weightb) Gases - specific gravity (air = 1)

Other15. Code marking required

a) ASME Unfired Pressure Vessel Code

Notes:

Page of


How to Order a 13900 POSRV

SRV-1Valve Coding


-HA

Customer orders for CONSOLIDATED safety relief valves are acknowledged by a computer printout of our internal code.We have supplied the following information for your easy interpretation of this coding.

1900 Flanged Valve Coding

Interchangeability No.

Temp. Classc = to 450˚Ft = 451˚F & Above

Orifice (D thru W)

Non Bellows

Pressure Class

SRV

Inlet FacingRF = Raised Face/SerratedRJ = Ring Joint

LM = Large MaleSM = Small MaleLF = Large FemaleSF = Small FemaleLT = Large TongueST = Small TongueLG = Large GrooveSG = Small GrooveLJ = Lens Joint

BW = Butt WeldSW = Socket WeldGL = GraylocOC = OTECO

ServiceGS = GasLA = LiquidSS = Steam

Guide Surface CoatingG1 = GLIDE-ALOY™ Disc HolderG2 = GLIDE-ALOY™ GuideG3 = GLIDE-ALOY™ Holder and Guide

Material ClassCC Carbon Steel is StandardNOTE 1

Deviation from Standard*

Seat Design

Lever/Cap Design

Inlet Facing

Service

Disc Holder Pressure(Selected by Dresser)

Sour Gas

Guide Surface Coating

190610121416182022242628

-00-30

-J -c-t

-2 -CC-C1-S2-S3-S4-M1

-MB (M1-1/2)-M2-M3-M4-H1-H2-H3-H4-L1-L2-L3-T1-T2-A1-A2-A3-A4

* -MS-DA-TD

-31-32-33-34-35-36-37

-RF-RJ-LM-SM-LF-SF-LT-ST-LG-SG-LJ-BW-SW-GL-OC

-GS-LA-SS

-HP-LP

-SG1-SG10-SG5

-SG15

-G1-G2-G3

Bellows

05

When * appears in code, nameplate will be stamped SPEC.

Pressure Class05 = 150 lb.06 = 300 lb.10 = 300 lb.12 = 600 lb.14 = 900 lb.16 = 1500 lb.18 = 2500 lb.20 = 300 lb.22 = 600 lb.24 = 900 lb.26 = 1500 lb.28 = 2500 lb.

Seat DesignMS = Metal SeatDA = O-RingTD = THERMODISC™

Lever/Cap Design31 = Screwed32 = Bolted33 = Packed34 = Plain35 = “L” Type36 = “R” Type37 = Air Operated

NOTE 1: See 1900 section for materials.

SRV-1Valve Coding




BW = Butt WeldSW = Socket WeldGL = GraylocOC = OTECO

ServiceSS = SteamDT = Dowtherm


Temp. Class

Orifice (D thru T)

Non Bellows

Pressure Class

SafetyRelief Valve

Deviation From Standard*

Material Class - CC Carbon Steel is standard

Disc Design

Lever/Cap Design

Inlet Facing

Service

Guide SurfaceCoating

1900/P1, P3 Valve Coding

19 10 -00-30

-J -P1-P3

-5 * -CCNOTE 1

-TD -31-32-33-34-35-36-37

-RF-RJ-LM-SM-LF-SF-LT-ST-LG-SG-LJ-BW-SW-GL-OC

-SS-DT

-G1-G2-G3

Guide Surface CoatingG1 = GLIDE-ALOY™ Disc HolderG2 = GLIDE-ALOY™ GuideG3 = GLIDE-ALOY™ Holder and Guide

When * appears in code, nameplate will be stamped SPEC.


Disc DesignTD = Thermodisc™

Lever/Cap Design31 = Screwed32 = Bolted33 = Packed34 = Plain35 = “L” Type36 = “R” Type37 = Air Operated

Bellows

NOTE 1: For other special material requirements,contact factory.

SRV-1Valve Coding


Material Class - CC Carbon Steel is standard


Temp. Class

Valve Type

Inlet Size


Cap/Lever Design

Inlet Type

Outlet Type

Service

1982 Valve Coding

1 1/2 1982 ct

-1 -CCNOTE 1

* -31-33-34

-SC-05-10

-SC -GS-LS-SS

Temperature Class400˚F & Below = c401˚F & Above = t

Cap/Lever Design31 = Screwed Cap33 = Packed34 = Plain

Inlet TypeSC = Screwed05 = 150# R.F.10 = 300# R.F.

Outlet TypeSC = Screwed

ServiceGS = GasLS = LiquidSS = Steam

When * appears incode, nameplate will be

stamped SPEC.

NOTE 1: For other special material requirements,contact factory.

SRV-1Valve Coding


Material - CC Carbon Steel is standardNOTE 1


Temperature Range Variations

Temperature Classc = 800˚F & Belowt = 801˚F & Above

Pressure Range

Orifice Size (Decimal)

SRV

Inlet Size

19000 Valve Coding


Seat Type

Cap/Lever

Inlet Type

Outlet Type

Service

Surface Coating

Back Pressure Design

1-1/21/23/412

19 357096110126226567

LMHP

ct

DEFGHO

-2 -CC-S2-S3-S4-M1-MB-M2-M3-M4-H1-H2-H3-H4-SG-PF-A1-A2-A3-A4-C1

* -MS-DA-DL

-31-33-34

-FT-MT

-BW-05-10-12-14-16-18-25-20-22-24-26-28-PF

-FT-MT-SW-05-10-25-20-PF

-LA-GS

-G1-G2-G3

-BP

Press. Range - psigL = 5 - 290

M = 291 - 2000H = 2001 - 8000P = 15 - 300(PF)

Temp. Range VariationsD = 250°F & Below (PF)E = 251°F & Above (PF)F = All Temps. (MS)G = 251°F & Above (MS)H = 251°F & Above (MS/SG)O = DA (Soft Seat)

Seat TypeMS = Metal SeatDA = Soft SeatDL = NOTE 1

Cap/Lever31 = Screwed33 = Packed34 = Plain

Inlet TypeFT = Female NPT

MT = Male NPTSW = Socket WeldBW = Butt Weld05 = 150# R.F.10 = 300# R.F.12 = 600# R.F.14 = 900# R.F.16 = 1500# R.F.18 = 2500# R.F.25 = 150# R.J.20 = 300# R.J.22 = 600# R.J.24 = 900# R.J.26 = 1500# R.J.28 = 2500# R.J.PF = Sanitary Fitting

(Max. Press. B/P 400psig)NOTE 2

Outlet TypeFT = Female NPT

MT = Male NPTSW = Socket Weld05 = 150# R.F.10 = 300# R.F.25 = 150# R.J.20 = 300# R.J.PF = Sanitary FittingNOTE 2

ServiceGS = Gas

AirLA = Liquid Service

Surface CoatingG1 = GLIDE ALOY™ HolderG2 = GLIDE ALOY™ GuideG3 = GLIDE ALOY™ Holder

& Guide

Back Pressure DesignMed. Pressure50 - 2000 psigMax. B/P 400 psig

When * appears in code, nameplate will bestamped SPEC.

-SW

NOTES: 1 Soft seat low pressure liquid service 100 psig andbelow except .110 Sq. In. Orifice.

2 PF design is for clean service applications and is fullydescribed in separate catalog number SRVPF-2.

SRV-1Valve Coding


820000 Valve Coding


Cap Design

Inlet Type

Outlet Type

Service

Material - Bronze


Temperature Class

Valve Type

Inlet Size

1/2 820121 c -1 -BR * -31-33-34

-MT-05-10

-FT -LA

Cap Design31 = Screwed Cap33 = Packed34 = Plain

Inlet TypeMT = Male NPT05 = 150# RF10 = 300# RF

Outlet TypeFT = Female NPT

ServiceLA = Liquid

When * appears in code, nameplate willbe stamped SPEC.

* Special materials(Contact factory for availability).

Inlet Size/Valve Type1/2 = 8201213/4 = 8201213/4 = 820216

1 = 8202161 = 820332

1-1/4 = 8203321-1/2 = 820857

2 = 820857

Temperature Classc = 400˚F & Below

MaterialBR = Bronze

Customer orders for CONSOLIDATED safety relief valves are acknowledged by a computer printout of our internal code. We have supplied the followinginformation for your easy interpretation of this coding.

2900 POSRV Main Valve Coding

-00-30

J -1 -CC-A1-A2-A4-C1-D1-D2-D4-H1-H2-H4-L1-L2-L3-M1-MB-M2

-M4

-S2-S4-T1

-MS-DA-TD

-B-V-E-K-T

Bellows

1029

Material ClassCC Carbon Steelis standardNOTE 1

InterchangeabilityNumber

Orifice (D thru W)

Non Bellows

Pressure Class

SRV*


Seat Design

Piston O-Ring Material(DA Seat Material Same)

Inlet Facing

Service

Sensing

Guide Surface Coating

Heat Exchanger

Sour Gas

-SG-RF-RJ-LM-SM-LF-SF-LT-ST-LG-SG-LJ-BW-SW-GL-OC

-GS-LA-SS

-RS-SR

-G1-G2-G3-M7-M8-M9

-HH-HL


Seat DesignMS = Metal SeatDA = O-RingTD = THERMODISC™



BW = Butt WeldSW = Socket WeldGL = GraylocOC = Oteco


SensingRS = Remote SensingSR = Sensing Ring

Guide Surface CoatingG1 = GLIDE-ALOY™ Disc Holder and PistonG2 = GLIDE-ALOY™ Guide and Cover PlateG3 = GLIDE-ALOY™ Disc Holder, Piston,

Guide and Cover PlateM7 = Mellonite Disc Holder and PistonM8 = Mellonite Guide and Cover PlateM9 = Mellonite Disc Holder, Piston, Guide, and

Cover PlateWhen * appears in code,

nameplate will be stamped SPEC.

Heat ExchangerHH = Media is 506˚F or aboveHL = Media is -41˚F or below


SRV-1Valve Coding

NOTE 1: See 2900 section for materials.

SRV-1Valve Coding


3900 POSRV Main Valve Coding

Material


Orifice (D thru T)NOTE 2

Pressure Class

Valve Type

Inlet Size

Full Bore Design

1 1/2 39 0510121416

F -4-S4-SG

NOTE 1

* -DA -RF-RJ

-GS-LA-SS

-DP -RS -SG

1 1/2 39 0510121416

B -4 -CC * -DA -RF -GS -DP -RS -SG

MaterialCC = Standard MaterialS4 = Entirely 316 Stainless SteelC1 = LCC Base and 316 Stainless Steel Cover PlateSG = Sour GasM1 = Monel WettedM4 = Entirely MonelH1 = Hastelloy WettedH4 = Entirely HastelloyD1 = Duplex Wetted (Consult Factory)D4 = Entirely Duplex (Consult Factory)A1 = Alloy 20 WettedA4 = Entirely Alloy 20



O-Ring Seat

Inlet Facing

Service

Dual Pilot

Remote Sensing

Sour Gas

Pressure Class05 = 150 Class10 = 300 Class12 = 600 Class14 = 900 Class16 = 1500 Class

When * appears in code,nameplate will bestamped SPEC.

-CC

NOTES: 1 For other special material requirements contact factory2 Orifice D thru T are standard bore. Inlet Sizes 1-1/2" thru 10".

SRV-1Valve Coding


POSRV Pilot Valve Coding39PV & 39MV pilots are the actuating mechanisms

available for valve designs 2900 and 3900

O-Ring MaterialNOTE 1


Material


Pressure Range

Pilot Type

Pilot Valve

Service

Bonnet*

Backflow Preventer

Blowdown

Sensing Line Filter

Dual Filter

PressureDifferential Switch

Spring Cover

Dirty Service

39 PVMV

0737

-2 -CC-SG-M1-M4-H1-H4-D1-D4-A1-A4

* -B-V-E-K-T

-GS-LA-SS

-BN -BP -MB-ER-AR

-LF-1F-2F-3F-4F

-DF -PD -P -DS-M-N

BonnetYoke = (Std. No Code)

BN = Closed Bonnet

BlowdownMB = Manual BlowdownER = Electronic RemoteAR = Air Remote

Sensing Line FilterLF = Line Filter (Std)

Aux. Hi Capacity Filter Option1F = Carbon Steel2F = Stainless Steel3F = Carbon Steel w/ Flush Valve4F = Stainless Steel w/ Flush Valve

Spring CoverP = PeekM = MetalN = None

When * appears in code,nameplate will be stamped SPEC.

Pilot TypePV = Pop PilotMV = Modulating Pilot

Pressure Range07 = 15 to 750 psig37 = 751 to 3750 psig

MaterialA1 = Alloy 20 WettedA4 = Entirely Alloy 20CC = Standard MaterialSG = Sour GasM1 = Monel WettedM4 = Entirely MonelH1 = Hastelloy C WettedH4 = Entirely Hastelloy CD1 = Duplex Wetted (Consult Factory)D4 = Entirely Duplex (Consult Factory)

O-Ring MaterialB = Buna N (Nitrile)V = VitonE = Ethylene PropyleneK = KalrezT = Teflon

ServiceGS = GasLA = LiquidSS = Steam NOTE 1: See 2900 section for special materials

for pilot valves

SRV-1Valve Coding


13900 POSRV Valve Coding

Orifice Size (Sq. in.)


Dump Valve Design

161820

139 0610

-3-114-143-176-200

-XDD

Pressure Class

POSRV

Inlet Size

SRV-1After Market Considerations


“The Total Solutions Provider”Call 1-800-245-VALV for service in the Americas, or contact the nearest

Dresser Sales Office for international service and support.

As a leading provider of pressure relief valve solutions, CONSOLIDATED offers world-class globalaftermarket services. The global aftermarket program is designed to provide consistent and exceptionalrepair services, technical training, field support, spare parts production and management, completeequipment replacement, and comprehensive diagnostic services. This global support network consistsof Green Tag Centers (GTC®), and CONSOLIDATED field service technicians that provide OEM experience,knowledge and technology to support all of your MRO needs worldwide, including hands-on trainingand on-site support.

The CONSOLIDATED aftermarket service program offers complete services for pressure relief valveproducts, including on-site installation and start-up, predictive and preventative maintenance programs,equipment testing, rebuilding and trouble-shooting, and complete valve turn-around management. Theprogram also includes on-site inventory planning, diagnostic data interpretation services, on-sitemachining, field retrofitting, and hands-on training. CONSOLIDATED aftermarket service support isaccessible 24 hours a day and seven days a week year round.

OEM Parts - CONSOLIDATED fully understands that quick response in obtaining replacement parts andoverhaul services is a critical factor in maintaining a smooth operating plant. As a result, WE have placedextremely high importance on this customer need within our global aftermarket program.

Service Parts Inventory Philosophy - CONSOLIDATED’S formulated service parts inventory philosophy isdesigned to provide prompt valve service capability, thus preventing extended maintenance downtime.Your CONSOLIDATED sales representative or local Green Tag Center can assist you in developing anoptimum inventory plan to fit your company’s inventory needs.

CONSOLIDATED also provides integrated programs, using tools such as “Avert®” to help manage thesupport of your installed equipment. These programs are location specific and include plant surveys,data management, scheduling and planning of maintenance, repairs, and overhauls. Historical data andtrends can be managed using an asset management system to maximize efficiency of overallequipment support. In addition, CONSOLIDATED has developed advanced diagnostic tools and services thatalso assist in the prevention of unexpected or unnecessary maintenance, repair, or overhaul. Availablediagnostic tools include the Electronic Valve Tester (EVT®) for pressure relief valves. Diagnostic servicesinclude the on-site application of these highly advanced tools by fully trained technicians.

Consolidated® Operations

SRV-1Training


CONSOLIDATED Safety Relief Valves are called upon to open and reliever pressure automatically, even after they have been closed for long periods of time.Are you comfortable with the maintenance and repair as it is currently practiced in your shop? Does your inspection department know what to look for todetermine if a pressure relief valve needs attention? You check to determine if the valves leak when installed. But, will your valves close after the systemreaches overpressure? Will the Valve Disc reach full lift and relieve the required capacity?CONSOLIDATED's three day Safety Relief Valve Maintenance Training Seminars are available in the Alexandria, Louisiana Training Center, or at your plant site.Two-day Engineering Sizing and Selection Seminars are also available for CONSOLIDATED products.For additional information concerning Training Seminars please contact the CONSOLIDATED Training Manager at (318) 640-6054 or by fax at (318) 640-6041.

Safety Relief Valve Maintenance Training

In-house Review

1900Scope of Design

1900 (SRV-1/Q2.02)1900.1

Table of Contents

Scope of DesignTable of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.2Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.3Pressure Relief Valve Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.5Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.7Steam Trim (TD) Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.9Liquid Trim (LA) Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.10Restricted Lift Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.11Soft Seat Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.12

MaterialsConventional Design 1900 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.15Bellows Design 1900-30 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.17Balanced Bellows Design 1900-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.19Soft Seat (DA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.21Steam Trim (TD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.22Liquid Trim (LA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.23Special Material and Service Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.24

Sour Gas (SG) Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.25Hydrofluoric Acid (HA) Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.26

Corrosive ServiceStainless Steel (S2, S3 and S4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.27Alloy 20 (A1, A2, A3 and A4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.28Monel (M1, M1 (MB), M2, M3 and M4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.29Hastelloy C (H1, H2, H3 and H4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.30

Low Temperature - Process Fluid (L1, L2 and L3)(For media temperatures to -450°F or -268°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.31

Low Temperature - Ambient (C1)(For ambient temperatures to -50°F or -45.6°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.32

High Temperature - (T1 and T2)(For media temperatures to 1500°F or 816°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.33

Lethal Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.34O-Ring Selection (Durometer by valve type and set pressure) . . . . . . . . . . . . . . . . . . . . . . . .1900.35O-Ring Selection (Temperature limits) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.36

AccessoriesCaps, Levers, and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.37

Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.41Bolt-on Jackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.43

Dimension & Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.45

Pressure/Temperature Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.56

Capacity Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.86

1900Scope of Design

Consolidated Spring Loaded Safety Relief Valves 1900 (SRV-1/Q2.02)1900.2

The comprehensive line of spring loaded CONSOLIDATED safety reliefvalves represents over one hundred years of valve manufacturingexperience in meeting and solving industry problems involving a widescope of valve applications.

The flanged CONSOLIDATED safety relief valve line consists of valves in avariety of sizes and materials. Each product offering is unique andjudgements are required in selecting the proper option.

To accomplish the selection process start with the General Informationsection of this catalog and follow the prescribed steps necessary tofinalize the selection.

This Section, 1900 SRV, should be reviewed against the user’sspecifications and product offerings selected. Beyond this step, proceedwith sizing and then confirmation of the pressure and temperature limits(API or ASME).

1900 Flanged Series safety relief valves are supplied in many variationsto suit specific applications.

Product variations covered in subsequent pages are noted below:

Product Variation Description1900 Conventional1900-30 Bellows Construction1900-35 Balanced Bellows

with Auxiliary Balancing Piston1900HA Special Materials for

Hydrofluoric Acid Service1900SG Sour Gas Trim1900DA Soft Seat1900LA Liquid Trim with Metallic Seats1900DA - LA Liquid Trim with Soft Seats1900TD Special Trim for Steam &

Organic Heat Transfer Media

The Consolidated 1900 series is compliant with the following codesand standards:

ASME B & PVC, Section II - Material (Applicable as required by ASMEB & PVC, Section III or VIII)

ASME B & PVC, Section III, class 2 and 3 (Gas, Vapor, and Liquid Service)

ASME B & PVC, Section VIII (Gas, Vapor, and Liquid Service)

ASME B16.34 and ASME B16.5

API 520, 526 and 527

ISO 4126

NACE MR0175 Standard Material Requirements

API Standard 526-1995Safety relief valves specified within this catalog comply with API standard526 - Fourth Edition, 1995. The 1900 Series valves previously compliedwith API standard 526 - Third Edition, 1984. In some cases dimensionaland nominal flanges sizes differ between these two editions. When orderingreplacement valves that must comply with API Standard 526 - Third Edition,1984, contact the factory for verification of the correct replacement.

Introduction

1900Scope of Design

1900 (SRV-1/Q2.02)1900.3

VENT PLUG

Type 1900 Series

Conventional

VENT,DO NOT PLUG

Type 1900-30 Series

Balanced Bellows

Type 1900-35 Series

Balanced Bellowswith Auxiliary Balancing Piston

VENT,DO NOT PLUG

1900 Series Overview

1900 Series Conventional Safety Relief ValvesSteel, Flat Seat, Top Guided, High Capacity, Stainless Steel TrimThis standard rugged configuration is equipped with corrosion resistant trim and a carbon steel body, bonnetand cap. The components are top guided, providing for free and repeatable action.The flat disc seat provides for easy maintenance and remachining.The exclusive “Eductor Tube” minimizes bonnet cavity pressure so that product performance is predictable.The nozzle is bottom inserted and rigidly held in position, providing a corrosion resistant path of flow to thevalve and corrosion resistant seating surfaces.

1900-30 Series Bellows ConstructionThis valve is the same as the conventional design except that a bellows has been added. When the bellowsis installed, the eductor tube is removed.Caution: It is important that the bonnet be vented to the atmosphere.

A bellows is added to the conventional valve to deal with any of several situations:(1) Back pressure entering the valve through the valve outlet is excessive or variable. If back pressurefluctuates with ±10% of a nominal value, a bellows is required.If a built up back pressure exceeds 10% of the set pressure or cold differential set pressure, a bellows must be used.(2) If the entering fluid is a slurry, highly viscous, or of a nature that it can enter the critical clearancesbetween the guides/disc holder, protect that area with a bellows.(3) If the fluid being handled is corrosive to the upper works of the valve, isolate the bonnet chamber throughuse of a bellows.Conventional valves can be easily converted to a bellows design or vice versa through the use of retrofit kits.All CONSOLIDATED 1900-30 Series valves are balanced bellows designs, meaning that they fully compensatefor the effects of back pressure.

1900-35 Series Balanced Bellows (with Auxiliary Balancing Piston)

The Balanced Bellows seals the body and fluid stream from the bonnet and working parts. Auxiliary balancingpiston assures proper valve performance by compensating for back pressure in case of bellows failure.The use of an auxiliary balanced piston is indicated when:(1) back pressure (either constant or variable) exists and;(2) excessive pressure may build in the bonnet as a result of pressure build -up in the bonnet vent piping and; (3) resultant build -up of pressure in the bonnet would cause a dangerous condition.Caution: It is important that the bonnet be vented to the atmosphere.

NOTE: Unless otherwise stated the valve is always supplied with a screwed cap. The exception to this would be whereASME B & PVC, Section VIII requires levers for steam, air, and hot water service over 140°F.

Refer to Accessories for available types of caps, levers, and accessories.

1900Scope of Design


1900 Series Overview

0.91270.785

H

1-1/2 x 3

1-1/2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

—

2 x 3

2 x 3

—

2 x 3

2 x 3

—

1.4961.287

J

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

—

3 x 4

3 x 4

—

3 x 4

3 x 4

—

2.1381.838

K

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

—

3 x 4

3 x 4

—

3 x 6

3 x 6

—

3.3172.853

L

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6*

—

4 x 6

4 x 6

—

4 x 6

4 x 6*

—

4.1863.6M

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

—

—

4 x 6

4 x 6

—

4 x 6

—

—

5.0474.34

N

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

—

—

4 x 6

4 x 6

—

4 x 6

—

—

7.4176.38

P

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

—

—

4 x 6

-

4 x 6

4 x 6

—

—

12.8511.05

Q

6 x 8

6 x 8

6 x 8

6 x 8

—

—

—

6 x 8

6 x 8

—

—

—

—

18.616R

6 x 8

6 x 8

6 x 10

6 x 10

—

—

—

6 x 8

6 x 10

—

—

—

—

30.2126T

8 x 10

8 x 10

8 x 10

—

—

—

—

8 x 10

—

—

—

—

—

50.26N/A

V

10 x 14

10 x 14

10 x 14

—

—

—

—

10 x 14

—

—

—

—

—

78.996N/AW

12 x 16

12 x 16

12 x 16

—

—

—

—

12 x 16

—

—

—

—

—

ASMEAPI

ORIFICE

1905

1906

1910

1912

1914

1916

1918

1920

1922

1923

1924

1926

1928

1900 & 1900-30 Inlet x Outlet Size Combinations (in.) Orifice Area (sq. in.) InletFlangeRatingASMEB16.5

150

300

300

600

900

1500

2500

300

600

600

900

1500

2500

OutletFlangeRatingASMEB16.5

150

300

150

300

0.12790.110

D

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1 x 2

1 x 2

—

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

0.22790.196

E

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1 x 2

1 x 2

—

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

0.35680.307

F

1-1/2 x 2

1-1/2 x 2

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

1-1/2 x 2

1-1/2 x 2

—

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

0.58490.503

G

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

2 x 3

2 x 3

1-1/2 x 3

1-1/2 x 3

—

1-1/2 x 3

2 x 3

2 x 3

ASMEAPI

ORIFICE

1905

1906

1910

1912

1914

1916

1918

1920

1922

1923

1924

1926

1928

1900 & 1900-30 Inlet x Outlet Size Combinations (in.) Orifice Area (sq. in.) InletFlangeRatingASMEB16.5

150

300

300

600

900

1500

2500

300

600

—

900

1500

2500

OutletFlangeRatingASMEB16.5

150

300

150

300

NOTE: Inlet and outlet size combinations as well as Orifice sizes shown in the table above are compliant with API standard 526 - Fourth Edition, 1995.* 1916L and 1926L are supplied with a 150# outlet.

1900Scope of Design

1900 (SRV-1/Q2.02)1900.5

All pressure relief valves operate on the principle of inlet system pressureovercoming a spring load, allowing the valve to relieve a defined capacity.

When the valve is closed during normal operation (See Figure1900.1), the vessel pressure acting against the seating surfaces(area “A”) is resisted by the spring force. As vessel pressure increases,the pressure at “A” tends to equalize the spring force and the pressureholding the seats together approaches zero.

orifice, pressure builds up in chamber “B” (See Figure 1900.2). Sincepressure can now act over a larger area, an additional force is availableto overcome the spring force. By adjusting the “adjusting ring” theopening in the secondary annular orifice can be altered, thus controllingpressure build-up in chamber “B”. This controlled pressure build -up inchamber “B” will overcome the spring force causing the disc to moveaway from the nozzle seat and the valve to “pop” open.

In vapor or gas service the valve may “simmer” before it will “pop”.When the vessel pressure increases to within one to two percent of theset pressure, media will audibly move past the seating surfaces intochamber “B”. As a result of restriction of flow in the secondary annular

Once the valve has opened an additional pressure build-up at “C”occurs. (See Figure 1900.3.) This is due to the sudden flow increaseand the restriction to flow through another annular orifice formedbetween the inner edge of the disc holder and the outside diameter ofthe adjusting ring. These additional forces at “C” cause the disc to liftsubstantially at “pop”.Flow is restricted by the opening between the nozzle seat and disc seatuntil the disc seat has been lifted from the nozzle seat approximatelyone -quarter of the nozzle throat diameter. After the disc has attainedthis degree of lift, flow is then restricted by the primary orifice ratherthan by the area between the seating surfaces.Blowdown (the difference between opening and closing pressure) canbe controlled within limits by positioning the single adjusting ring.Blowdown is caused by the result of the spring force not being able toovercome the summation of the forces at “A”, “B”, and “C” until thepressure at “A” drops below the set pressure.

How Pressure Relief Valves Operate

Spring

Disc

Chamber B

Disc Holder

Adjusting Ring

A

Figure 1900.1 - Closed

Figure 1900.2 - Partially Open

SecondaryAnnular Orifice

HUDDLINGCHAMBER

C

Primary Orifice

Figure 1900.3 - Fully Open

SecondaryAnnular Orifice

HUDDLINGCHAMBER

1900Scope of Design


Figure 1900.4 reflects the flow path of fluid through the valve. It is significant to recognize that the systempressure enters through the nozzle and remains at a high pressure until it expands through the secondary annularorifice. Pressure downstream of the secondary annular orifice is much lower than the system pressure. The upper

portion of the valve base plus the outlet flange are of a lower pressure rating than the inlet side of the valve.

How Pressure Relief Valves Operate

NOTE: BLOWDOWN SETTINGS - Production testing required by Manufacturers of safety relief valves isgoverned by ASME Section VIII, UG -136 (d), which does not require the setting of blowdownduring production test. Adjusting rings on the 1900 flanged safety relief valve series are factoryadjusted to predetermined ring settings. This will provide a consistent opening and closingpressure on the safety relief valve.

Guide

Disc Holder

Disc

Adjusting Ring

Adjusting Ring Pin

Primary Orifice

Nozzle

Base

Spindle

Eductor Tube

Inlet Neck

Secondary Annular Orifice

Threads

Figure 1900.4

1900Scope of Design

1900 (SRV-1/Q2.02)1900.7

Adjusting RingThe adjusting ring in the CONSOLIDATED safety relief valve is preset topredetermined positions prior to putting the valve in service. Presettingreduces the necessity of popping the valve in service to ascertain thatthe ring has been set properly for attaining the necessary lift andrelieving capacity.

Simple Blowdown AdjustmentAdjustment of CONSOLIDATED safety relief valve blowdown, or reseatingpressure, is by means of a single adjusting ring. When moved upward,blowdown is increased (lowering the reseating pressure), or when moveddownward, the blowdown is decreased (raising the reseating pressure).The simplicity and advantages of this adjustment are obvious whencomparing valves having two or more adjusting rings each of which affectvalve action as well as blowdown.

Minimum Guiding AreaGuiding areas greater than those required to align the seating surfaces areundesirable in a safety relief valve, especially those used in the processindustries. The smaller the guiding area of the valve (when corrosion orcontamination from the flowing medium build up in the valve guidingsurfaces) the less tendency the guiding area will have to stick and hindervalve operation.

NozzleThe nozzle is a pressure containing component in constant contact withthe process media in both the open and closed valve positions. To ensuremaximum reliability and safety, CONSOLIDATED flanged SRV nozzles aremade from forgings, investment castings, or centrifugal castings.

Spindle Pocket ConnectionThe connection between the spindle and disc holder in a CONSOLIDATED safetyrelief valve is a positive method of attachment. The Inconel snap ring andgroove design make it virtually impossible to remove the spindle from thedisc holde, unless the ring is compressed intentionally. This design requiresa minimum amount of effort to disassemble during maintenance.

Design SimplicityCONSOLIDATED safety relief valves embody a minimum number ofcomponent parts which results in a savings by minimizing spare partsinventory and simplifying valve maintenance.

Maximum Seat TightnessSeat finish in a safety relief valve is of the utmost importance; otherwise,valve leakage will occur.CONSOLIDATED safety relief valve seats are precision machined and lapped.This ensures positive seating and prevents loss of contained media.The Thermodisc™ design provides a tighter closure and compensates fortemperature variations around the periphery of the nozzle. Thermaldistortion, which produces seat leakage, is minimized in steam service.

Cap and Lever InterchangeabilityMany times it is necessary to change the type of cap or lever in the fieldafter a valve has been installed. All CONSOLIDATED safety relief valves aresupplied so they can be converted to any type of lever or cap desired. Itis not necessary to remove the valve from the installation, nor will the setpressure be affected when making such a change.

Valve InterchangeabilityA CONSOLIDATED safety relief valve may be converted from the standard,conventional type valve to the bellows type, or to the O-Ring seat seal type,Thermodisc™ seat Liquid Trim, or vice versa, requiring a minimum number ofnew parts. This results in lower costs.

Quality MaterialAll CONSOLIDATED safety relief valve castings and forgings are made toASTM/ASME specifications and are subject to many rigid inspections,ensuring the highest degree of quality.Coupled with the highest quality workmanship, this ensures continuousprotection and long, trouble-free valve life.

Product Features - 1900 Flanged Series

1900Scope of Design


Reduction of Valve Bonnet PressureClosed bonnet valves are subject to variable pressure past the guiding surfaces when the valve is open, which adds a variable force to that of the spring, affectingvalve performance. To eliminate excess bonnet pressure and ensure good valve opening and closing action, an Eductor Tube is provided.The Eductor Tube reduces bonnet pressure by pulling discharging fluids out of the bonnet faster than it is possible for the discharging fluids to enter past theguiding surfaces, acting as a siphon due to the drawing effect of the flow through the outlet side of the valve.

Eductor Tube Reduces Bonnet PressureAn exclusive with CONSOLIDATED valves! During valve discharge, media flows through the clearance between the disc holder and guide, building up bonnetpressure. This adds a variable force to the spring force, which inhibits valve lift. Bonnet pressure is reduced by the eductor effect of the medium flowing athigh velocity at the valve outlet.The greater lifting force (resulting from a reduction in bonnet pressure) introduces important advantages:

(1) Response to blowdown control adjustment is uniform(2) Positive, full - rated capacity at low overpressures is assured(3) Better operation at higher back pressures with Eductor Tube.(4) Complete stability (of valve lift and capacity) is assured during operation.(5) Increases the lifting force when the valve opens and tends to break slight corrosive deposits or surface film which accumulate on the guiding

surfaces and retard valve action. (For severe corrosion applications, a bellows valve is recommended.)

Product Features - 1900 Flanged Series

Figure 1900.5 - Eductor Tube

Eductor Tube

1900Scope of Design

1900 (SRV-1/Q2.02)1900.9

The 1900 TD is specifically designed for steam service and organic heattransfer media and is certified to ASME Code Section Vlll.Thermodisc™ – this is a specifically designed disc for use on hightemperature fluids. This concept has more than 40 years of field provenperformance that ensures the tightest valves in the world.A Thermodisc™ is required for steam service.

The Martensitic stainless steel disc construction allows for highstrength and toughness. As the set point of the valve is approached,the pressure sealing effect of the Thermodisc™ assists in the tightnessof the seat as does the rapid thermal equalization that occurs due tothe thin sealing section.

1900 Steam Trim (TD) Valves

Retainer Ring

Nozzle

Adjusting Ring

Disc Holder

Thermodisc™

1900 Steam Trim Internals

1900 Disc Design Availability

Disc Design

Standard Solid Disc Thermodisc1

Steam Liquid

LiquidOrganic

HeatTransferMedia

VaporOrganic

HeatTransferMedia

Vapor Steam Liquid

LiquidOrganic

HeatTransferMedia

VaporOrganic

HeatTransferMedia

Vapor

ASMECode

Section

ValveType

19001900-301900-351900/P12

1900/P32

-----

XXX--

XXX--

---

X4

-

XXXXX

XXX--

-----

-----

XXXX3

X3

XXX--

NOTES: 1 Thermodisc™ is provided in one material only, a specially heat treated martenistic stainless steel.2 Refer to the 1900/P Series section for product information.3 1900/P Series are not intended for overpressure protection of power boiler drum, superheater or reheater equipment.4 Consult the factory for special conditions that require the use of an ASME Code Section I pressure relief valve.

Except for liquid thermal relief applications, the “P” Series are not intended for liquid service.

VIIIVIIIVIII

I or VIIII or VIII

1900Scope of Design


The Liquid Trim LA (liquid application) represents the second generationof ASME B & PVC, Section VIII certified liquid trim valves and must beused for all liquid applications for both ASME B & PVC, Section VIIIcertified and non-certified valves. Liquid applications have been definedas follows:

(1) if the fluid remains liquid while flowing through the valve

(2) if flowing fluid flashes going through the valve

(3) for ASME B & PVC, Section VIII certified and non-certified thermal

relief applications. (Thermal Relief is to prevent excessive pressure causedby thermal expansion of trapped liquids). The LA trim provides blowdownperformance with ranges from 7% to 12% below the set pressure. Thisvaluable feature provides conservation of media, a positive lift and asmooth chatter - free operation. Because of the short blowdownperformance of this design, it is critical that the inlet connection alwaysprovide for a pressure drop of 3% or less from the vessel to the valve asrecommended by API 520.

Conversion of existing 1900 Series valves to liquid trim is availablethrough the factory or your local Green Tag Center.

1900 Liquid Trim (LA) Valves

Single piece disc holder for maximum rigidity

and part integrity.

Designed to provide high liftand capacity with stable

operation on liquid media.

Guide

Disc Retainer

Adjusting Ring

Disc Holder

Disc

Nozzle

1900 Liquid Service Internals

1900Scope of Design

1900 (SRV-1/Q2.02)1900.11

D and E Orifice Only

The 1900 series is offered in orifice sizes ranging from the smallest “D” size to the largest “W” size. In order to accomplish certain valve functions somespecial considerations have to be made. Such a case is the D and E orifice designs noted below.The D and E valves are restricted lift versions of the “F” orifice valve. The lift is restricted by a limit washer to provide the equivalent effective orifice areafor a “D” or “E” orifice. This design is available with a balanced bellows configuration and is designed for back pressure applications.The standard 1900 Series are available with restricted lifts in orifices ranging from “F” to “W” for compressible media only.

1900 Restricted Lift Valves

Conventional

RESTRICTED LIFT

Balanced Bellows

Guide

Disc Holder

Limit Washer

Limit Washer

1900Scope of Design


Closeness of Operating Pressure to Set PressureWhere the operating pressure is close to the set pressure, seat tightnesscan be maintained at relatively higher operating pressures.

Compressor Discharge and Positive DisplacementPump ServiceMechanical vibration and pressure waves could lift the valve disc with each strokeand may cause flat metal - to -metal seats to rub together and become damaged.The 45° metal - to -metal load bearing seats in the CONSOLIDATED O-Ringseat seal assure true alignment, aided by full system pressure behind the O-Ring, which effectively seals against leakage.

Corrosive ServicesIn some services, corrosion of the seating surfaces is the cause of vaIveleakage. In this type of service, the CONSOLIDATED O-Ring seat seal willprotect the metal seat on the nozzle against contact of the corrosive fluidthereby maintaining greater tightness.

Foreign Matter and Slurry ServiceMany times foreign material such as pipe scale, welding beads, sand dustparticles, etc. may damage the metal - to -metal seating surfaces in avalve of this type when it is open and flowing.The CONSOLIDATED O-Ring seat seal is designed to absorb the impact ofmost foreign particles without damage.

Hot Water Boiler ServiceWhen a safety relief valve opens hot water flashes into steam at theseating surfaces and solid particles which float to the water surface aredriven against the seating surfaces at steam velocities. CONSOLIDATED O-Ringseat seal valves can withstand this type of service and remain tight to agreater degree than metal - to -metal seat valves.CONSOLIDATED uses proven quality Teflon® O-Ring seats for this service. Insome pressure/temperature applications, Teflon® is not resilient, andleakage may occur.

BenefitsSafety Relief Valve leakage which is aggravated by any cause is usuallycostly. In many cases, expensive product is lost and maintenance costsincreased. CONSOLIDATED O-Ring seat seal valves are designed to eliminateleakage in troublesome applications and reduce overall costs. Shouldleakage occur, it is much simpler and less expensive to replace the O-Ringthan to maintain metal - to -metal seats.

O-Ring Conversion1900 Series CONSOLIDATED metal seated valves can be converted to O-Ringseat seals by installing a few basic parts provided in a conversion kit.

Soft Seat Applications

1900-DA soft seats without bellows

1900Scope of Design

1900 (SRV-1/Q2.02)1900.13

The Double Seal Soft SeatThe double seal design incorporates the merits of both a soft seat and a metalseat design valve. The 45°metal seat provides the load bearing surface totransmit spring force, the slotted O-Ring retainer allows the O-Ring to bepressurized and accomplish the primary sealing function. This O-Ring sealdesign can be used throughout the full pressure range of the valve. Forpressure/temperature ratings of the seal, refer to O-Ring Selection Table in thissection (pages 1900.35 and 1900.36).Tightness: CONSOLIDATED O-Ring seat seal valves are bubble tight at 95% of setpressures over 100 psig.The following table reflects the percent of set pressure (popping pressure) atwhich the valve will be bubble tight on air.

CONSOLIDATED O-Ring seat seals provide positive closure at service pressurescloser to the set pressure than is possible with metal - to -metal seats assuringcontinuous, trouble-free service, and complete valve tightness afternumerous “pops”.

NOTE: The CONSOLIDATED 1900 O -Ring design features a secondary metal-to-metal seatwhich becomes effective if O -Ring integrity is lost due to external fire or other causes.The retainer is lapped to the nozzle at assembly assuring seat tightness.

1900 Soft Seat (DA) Option

Percent ofSet Pressure

90%

92%

94%

95%

Set Pressure(psig)5 to 30

31 to 50

51 to 100

101 to Max rating of valve

1900Scope of Design


1900 Soft Seat (DA) OptionHow the Double Seal Works

45°

1) Concentric Alignment

The nozzle bore and O -Ring retainer are both machined to an angle of45°. This ensures that as the valve disc opens and closes, the O -Ring isaligned concentrically against the lip of the nozzle. Close tolerancebetween the nozzle and the body, or the body and the disc guide and discholder, also help to ensure a tight seal when the valve is closed. Accuratealignment coupled with the load bearing function of the O -Ring retainervirtually eliminates O -Ring abrasion from valve action.

2) Maximum Sealing Force

On the back side of the O -Ring retainer there are two small slots. Whenthe valve is closed, process media enters between the machined seat ofthe nozzle and the O -Ring retainer and proceeds up the slots behind theO -Ring. This pressure forces the O -Ring against the lip of the nozzle andthe curved recess of the disc holder. As the pressure within the valve risesto set point, the O -Ring is pressed tightly against the nozzle to maintainmaximum sealing force until break-away pressure is reached.

3) O-Ring Retention

When the valve opens, the pressure behind the O -Ring escapes from thesame two slots on the O -Ring retainer. This prevents the O -Ring frombeing ejected. Additionally, the O -Ring encapsulating retainer preventsthe O -Ring from being pulled from its setting by the high velocity, lowpressure discharge inside the upper valve body.

Three Essentials to a Tighter and More Secure Seal:

Two unique features distinguish the CONSOLIDATED O-Ring seat seal safetyvalve from other designs. These are the 45° metal - to -metal load bearingseats and the slotted O -Ring retainer.

1900Materials

1900 (SRV-1/Q2.02)1900.15

Conventional Safety Relief Valves1900 Series

Part Material

Standard Material for Conventional Type Safety Relief Valves

1 Base: Types 1905 thru 1918 SA216 Grade WCC Carbon SteelBase: Types 1920 thru 1928 SA217 Grade WC6 Alloy Steel

2 Nozzle 316SS3 Adjusting Ring 316SS4 Adjusting Ring Pin 316SS5 Adjusting Ring Pin Gasket Soft Iron6 Disc 316SS7 Disc Retainer Ring Inconel X7508 Disc Holder 316SS9 Guide 316SS10 Guide Gasket Soft Iron11 Bonnet SA216 Grade WCC Carbon Steel12 Bonnet Gasket Soft Iron13 Base Stud B7 Alloy Steel14 Base Stud Nut 2H Carbon Steel15 Spindle 410SS16 Spindle Retainer Inconel X75017 Spring Washer Carbon Steel18 Spring - types 1900 (-75°F to 800°F) Alloy Steel

Spring - types 1920 (801°F to 1000°F) Inconel X750 or Tungsten19 Adjusting Screw 416SS20 Adjusting Screw Locknut 416SS21 Screwed Cap Carbon Steel27 Cap Gasket Soft Iron40 Eductor Tube 304SS41 Vent Pipe Plug Carbon Steel

1900Materials


For Gas, Vapor, and Liquid Service1900 Series

21

27

17

17

12

10

15

40

20

11

13

16

9

7

6

5

4

3

2

14

19

1

8

18

41

1900Materials

1900 (SRV-1/Q2.02)1900.17

1900-30 Series Bellows Assembly

Part Material

Standard Material for Bellows Type Safety Relief Valves

1 Base: Types 1905-30 thru 1918-30 SA216 Grade WCC Carbon SteelBase: Types 1920-30 thru 1928-30 SA217 Grade WC6 Alloy Steel

2 Nozzle 316SS3 Adjusting Ring 316SS4 Adjusting Ring Pin 316SS5 Adjusting Ring Pin Gasket Soft Iron6 Disc 316SS7 Disc Retainer Ring Inconel X7508 Disc Holder 316S9 Guide 316SS10 Guide Gasket Soft Iron11 Bonnet SA216 Grade WCC Carbon Steel12 Bonnet Gasket Soft Iron13 Base Stud B7 Alloy Steel14 Base Stud Nut 2H Carbon Steel15 Spindle 410SS16 Spindle Retainer Inconel X75017 Spring Washer Carbon Steel18 Spring - types 1900 (-75°F to 800°F) Alloy Steel

Spring - types 1920 (801°F to 1000°F) Inconel X750 or Tungsten19 Adjusting Screw 416SS20 Adjusting Screw Locknut 416SS21 Screwed Cap Carbon Steel27 Cap Gasket Soft Iron40 Bellows Assembly —

Bellows Inconel 625Bellows Ring & Bellows Flange 316L SS

41 Bellows Gasket Soft Iron

1900Materials


For Gas, Vapor, and Liquid Service1900-30 Series

21

27

13

12

10

3

20

19

15

9

5

6

2

1

8

16

11

14

4

7

41

VENT,DO NOT PLUG

17

18

17

40

1900Materials

1900 (SRV-1/Q2.02)1900.19

1900-35 Balanced Bellowswith Auxiliary Balancing Piston

Part Material

Standard Material for Balanced Piston Type Safety Relief Valves

Base: Types 1905-35 Thru 1918-35Base: Types 1920-35 Thru 1928-35

NozzleAdjusting Ring

Adjusting Ring PinAdjusting Ring Pin Gasket

DiscDisc Retainer Ring

Disc HolderGuide

Guide GasketPiston Guide

Piston Guide LockscrewPiston

Piston LockscrewSeal Ring

Seal Ring ExpanderBonnet

Bonnet GasketBase Stud

Base Stud NutSpindle

Spindle RetainerSpring Washer

Spring - types 1900 (-75°F to 800°F)Spring - types 1900 (801°F to 1000°F)

Adjusting ScrewAdjusting Screw Locknut

Screwed CapCap Gasket

Bellows AssemblyBellows

Bellows Ring and Bellows FlangeBellows Gasket

1

23456789101112131415161718192021222324

2526273346

47

SA216 Grade WCC Carbon SteelSA217 Grade WC6 Alloy Steel

316SS316SS316SS

Soft Iron316SS

Inconel X750316SS316SS

Soft Iron304SS

Carbon Steel304SS

Carbon SteelGraphitar Grade 67

410SSSA216 Grade WCC Carbon Steel

Soft IronB7 Alloy Steel

2H Carbon Steel410SS

Inconel X750Carbon SteelAlloy Steel

Inconel X750 or Tungsten416SS416SS

Carbon SteelSoft Iron

—Inconel 625316 L SSSoft Iron

1900Materials


For Gas, Vapor, and Liquid Service1900-35 Series

33

21

19

7

6

5

2

1

4

20

12

11

8

9

24

25

27

14

16

1513

26

17

23

23

18

10

46

47

3

22

1900Materials

1900 (SRV-1/Q2.02)1900.21

1900 Soft Seat (DA) Option

D Thru J Orifice

K Thru T Orifice

Part Name Materials2

Nozzle 316SSDisc 316SS

Disc Holder 316SSDisc Retainer Inconel X750

O-Ring Retainer 316SSRetainer Lock Screw(s) 316SS

O-Ring Seat Seal Select 1

NOTES: 1 Refer to pages 1900.35 & 1900.36 for O-Ring Selection (Durometerand Temperature Limits). See Technical Information Section for application.

2 Balance of Materials same as 1900 standard construction

Disc Holder

Disc Holder

Disc Retainer

Disc

Retainer Lock Screw

O-Ring Seat Seal

O-Ring Retainer

Nozzle

Retainer Lock Screw

Nozzle

O-Ring Seat Seal

O-Ring Retainer

1900Materials


NOTE: 1 Balance of materials same as 1900 standard construction.


Nozzle 316SSThermodisc™ 616SSDisc Retainer Inconel X750Disc Holder 316SS

Guide 316SSAdjusting Ring 316SS

1900 Steam Trim (TD) Option

Guide

Disc Retainer

Nozzle

Disc Holder

Thermodisc™

Adjusting Ring

1900Materials

1900 (SRV-1/Q2.02)1900.23

1900 Liquid Trim (LA) Option

Disc Holder

Disc

Nozzle

Guide

Disc Retainer

Adjusting Ring


Nozzle 316SSDisc 316SS

Disc Retainer Inconel X750Disc Holder 316SS

Guide 316SSAdjusting Ring 316SS

NOTE 1: Balance of materials same as 1900 standard construction.

1900Materials


The 1900 Flanged Series offers various material options to satisfy customer needs and API standards. The most common options are listed in this section.

These material options are not the only available options however. Inquire of Dresser Measurement for options not listed here.

Specify the material construction classification using the construction variations such as: S2, H4, etc.

Options included are:

PAGE NUMBERSour Gas Service (SG1, SG10, SG5, and SG15) 1900.25Hydrofluoric Acid Service (HA) 1900.26Stainless Steel (S2, S3, and S4) 1900.27Alloy 20 (A1, A2, A3,and A4) 1900.28Monel (M1, M1 (MB), M2, M3, and M4) 1900.29Hastelloy C (H1, H2, H3, and H4) 1900.30Low Temperature - Process Fluid (L1, L2, and L3) (For media temperatures to -450°F or -268°C) 1900.31Low Temperature - Ambient (C1) (For ambient temperatures to -50°F or -45.6°C) 1900.32High Temperature (T1 & T2) (For media temperatures to 1500°F or 816°C) 1900.33Lethal Service 1900.34O-Ring Selection 1900.35

Many other special options are available not necessarily of a material nature. These include, but are not limited to, special facings on connections orspecial connections. Contact the factory for any special requirements you may have.

1900 Special Material & Service Options

1900Materials

1900 (SRV-1/Q2.02)1900.25

Special Materials, Sour Gas Service1

Material requirements of NACE Standard MR-01-75 are applicable tosystems handling sour gas if the total operating pressure of the system is65 psia or greater and if the partial pressure of H2S in the gas is 0.05psia or greater.The SG10 (non-bellows) and SG15 (bellows) material selections aresatisfactory for applications in which the valve secondary pressure (outletside) does not exceed 65 psia (50 psig). Under valve relieving

conditions, 50 psig secondary pressure would not normally be exceededuntil the valve set pressure exceeds 450 psig (31.0 Bar).The SG1 (non-bellows) and SG5 (bellows) material selections complywith NACE standard MR-01-75.Specific applications may be referred to the factory for recommendations.

1900 Sour Gas (SG) Trims

Component

Base: Types 1905 thru 1918Base: Types 1920 thru 1928NozzleDiscBellows Assembly

FlangeBellowsRing

Adjusting RingAdjusting Ring PinDisc HolderGuideSpindleSpindle RetainerBonnetBase StudBase Stud NutSpringSpring WasherAdjusting ScrewAdjusting Screw LocknutDisc RetainerCapCap GasketBonnet GasketBellows GasketGuide GasketAdj. Ring Pin GasketEductor TubeBase Plug: Types 1905 thru 1918Base Plug: Types 1920 thru 1928Bonnet Plug

Construction Variation

SG14 SG103 SG53 & 4 SG153

SA216 WCC Carbon Steel SA216 WCC Carbon Steel SA216 WCC Carbon Steel SA216 WCC Carbon SteelSA217 WC6 Alloy Steel SA217 WC6 Alloy Steel SA217 WC6 Alloy Steel SA217 WC6 Alloy Steel

316SS 316SS 316SS 316SS316SS 316SS 316SS 316SS

— — — —N/A N/A 316L SS 316L SSN/A N/A Inconel 6255 Inconel 625N/A N/A 316L SS 316L SS

316SS 316SS 316SS 316SS316SS 316SS 316SS 316SS316SS 316SS 316SS 316SS316SS 316SS 316SS 316SS316SS 410SS 410SS 410SS

Inconel X750 Inconel X750 Inconel X750 Inconel X750SA216 WCC Carbon Steel SA216 WCC Carbon Steel SA216 WCC Carbon Steel SA216 WCC Carbon Steel

B7 Alloy Steel B7 Alloy Steel B7 Alloy Steel B7 Alloy Steel2H Carbon Steel 2H Carbon Steel 2H Carbon Steel 2H Carbon SteelInconel X750 2 2 2

316SS Carbon Steel Carbon Steel Carbon Steel316SS 416SS 416SS 416SS316SS 416SS 416SS 416SS

Inconel X750 Inconel X750 Inconel X750 Inconel X750Carbon Steel Carbon Steel Carbon Steel Carbon Steel

Soft Iron Soft Iron Soft Iron Soft IronSoft Iron Soft Iron Soft Iron Soft Iron

N/A N/A Soft Iron Soft IronSoft Iron Soft Iron Soft Iron Soft IronSoft Iron Soft Iron Soft Iron Soft Iron304SS 304SS N/A N/A

Carbon Steel Carbon Steel Carbon Steel Carbon Steel316SS 316SS 316SS 316SS

Carbon Steel Carbon Steel N/A N/A

Conventional Valves Bellows Valves

NOTES: 1 The materials in red denote variation from standard material construction.2 Alloy springs are used for temperatures up to 800°F (426.7°C) and are aluminum metallized.3 SG10 and SG15 are the same as standard valves except for springs being aluminum metallized.4 SG1 and SG5 are NACE MR-01-75 compliant.5 Heat treated

1900Materials


To meet the demanding requirements of the extremely corrosive HF Alkyservice, Dresser Measurement has, in conjunction with major designersand users in this industry, developed the 1900 HA variation. Extensiveuse of Monel Alloy 400, in the stress relieved condition for criticalcomponents, has been utilized for this option.NACE document 5A171 states, “In practice, occurrence of stress corrosioncracking may either be avoided by complete exclusion of oxygen or may

be minimized by stress relieving welded or cold formed parts.” The HAmaterials should not be confused with the M1 through the M4 materialsused for other corrosive applications.In addition to the special stress relieved conditioned Monel 400materials, a bellows seal and litharged cured soft seat has beenincorporated into this option. Long term applications have providedexcellent results in the most severe, moist, aerated, HF Alky service.

1900 Hydrofluoric Acid (HA) Service

Component

Special Materials, Hydrofluoric Acid Service1,2

BaseNozzleAdjusting RingAdjusting Ring pinAdj. Ring Pin GasketDiscDisc RetainerO-RingO-Ring RetainerRetainer Lock ScrewDisc HolderGuideGuide GasketBellows Assembly

FlangeBellowsRing

Bellows GasketBonnetBonnet GasketBase StudBase Stud NutSpindleSpindle RetainerSpring (-20°F to 800°F)Spring WasherAdjusting ScrewAdjusting Screw LocknutCapCap GasketLimit Washer

SA216 WCC (radiographed per supplement S5)Monel 400 (stressed relieved)

Monel 400Monel 400Monel 400

Monel 400 (stressed relieved)Inconel X750

Viton A (litharge cured)Monel 400 (stressed relieved)

Monel 400Monel 400 (stressed relieved)

Monel 400Monel 400

Monel 400 (stressed relieved)Monel 400Monel 400Monel 400

Garlock Gylon 35101SA216 WCC Carbon Steel

Monel 400K MonelK Monel

Monel 400Inconel X750

Carbon Steel (nickel plated)Carbon SteelMonel 400Monel 400Carbon SteelMonel 400Monel 400


HA

NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/HA or 1910-30L/HA.

1900Materials

1900 (SRV-1/Q2.02)1900.27

Corrosive Service

Corrosive Service, Stainless Steel Material1,2

Component

Common Components

Nozzle 316SS 316SS 316SSDisc 316SS 316SS 316SSDisc Retainer Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS 316SS 316SSAdjusting Ring 316SS 316SS 316SSAdjusting Ring Pin 316SS 316SS 316SSSpindle Retainer Inconel X750 Inconel X750 Inconel X750Adjusting Ring Pin Gasket Monel Monel MonelGuide Gasket Monel Monel MonelBase, Bonnet, Cap Carbon Steel 316SS 316SSBase Studs B7 Alloy Steel Gr. B8M Gr. B8MBase Stud Nuts 2H Carbon Steel Gr. 8M Gr. 8M

Guide 316SS 316SS 316SSSpindle 316SS 316SS 316SSAdjusting Screw 316SS 316SS 316SSAdjusting Screw Locknut 316SS 316SS 316SSSpring Alloy Steel Alloy Steel 316SSSpring Washers Carbon Steel Carbon Steel 316SSEductor Tube 304SS 316SS 316SSBonnet Gasket Monel Monel MonelCap Gasket Monel Monel Monel

Guide 316SS 316SS 316SSSpindle 410SS 316SS 316SSAdjusting Screw 416SS 316SS 316SSAdjusting Screw Locknut 416SS 316SS 316SSBellows Assembly — — —

Flange 316L SS 316L SS 316L SSBellows Inconel 625 Inconel 625 Inconel 625Ring 316L SS 316L SS 316L SS

Bellows Gasket Monel Monel MonelSpring Alloy Steel Alloy Steel 316SSSpring Washer Carbon Steel Carbon Steel 316SSBonnet Gasket Soft Iron Monel MonelCap Gasket Monel Monel Monel

S2 S3 S4

Non-Bellows Valve Components

Bellows Valve Components

NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/S3 or 1910-30L/S3.


1900Materials


Corrosive Service

Corrosive Service, Alloy 20 Material1,2

Component

Common Components

Nozzle Alloy 20 Alloy 20 Alloy 20 Alloy 20Disc Alloy 20 Alloy 20 Alloy 20 Alloy 20Disc Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS Alloy 20 Alloy 20 Alloy 20Adjusting Ring 316SS Alloy 20 Alloy 20 Alloy20Adjusting Ring Pin 316SS Alloy 20 Alloy 20 Alloy 20Spindle Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750Adjusting Ring Pin Gasket Soft Iron Monel Monel MonelGuide Gasket Soft Iron Monel Monel MonelBase, Bonnet, Cap Carbon Steel Carbon Steel 3 3

Base Studs B7 Alloy Steel B7 Alloy Steel Alloy 20 Alloy 20Base Stud Nuts 2H Carbon Steel 2H Carbon Steel Alloy 20 Alloy 20

Guide 316SS Alloy 20 Alloy 20 Alloy 20Spindle 410SS Alloy 20 Alloy 20 Alloy 20Adjusting Screw 416SS Alloy 20 Alloy 20 Alloy 20Adjusting Screw Locknut 416SS Alloy 20 Alloy 20 Alloy 20Spring Alloy Steel Alloy Steel Alloy Steel Alloy 20Spring Washers Carbon Steel Carbon Steel Carbon Steel Alloy 20Eductor Tube 304SS 304SS Alloy 20 Alloy 20Bonnet Gasket Soft Iron Monel Monel MonelCap Gasket Soft Iron Monel Monel Monel

Guide 316SS 316SS Alloy 20 Alloy 20Spindle 410SS 410SS Alloy 20 Alloy 20Adjusting Screw 416SS 416SS Alloy 20 Alloy 20Adjusting Screw Locknut 416SS 416SS Alloy 20 Alloy 20Bellows Assembly — — — —

Flange 316L SS Alloy 20 Alloy 20 Alloy 20Bellows Inconel 625 Alloy 20 Alloy 20 Alloy 20Ring 316L SS Alloy 20 Alloy 20 Alloy 20

Bellows Gasket Soft Iron Monel Monel MonelSpring Alloy Steel Alloy Steel Alloy Steel Alloy 20Spring Washer Carbon Steel Carbon Steel Carbon Steel Alloy 20Bonnet Gasket Soft Iron Soft Iron Monel MonelCap Gasket Soft Iron Monel Monel Monel

A1 A2 A3 A4



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/A3 or 1910-30L/A3.3 ASME SA351 grade CN7M alloy steel.


1900Materials

1900 (SRV-1/Q2.02)1900.29

Corrosive Service

Corrosive Service, Monel Material1,2

Component

Common Components

Nozzle Monel Monel Monel Monel MonelDisc Monel Monel Monel Monel MonelDisc Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS Monel Monel Monel MonelAdjusting Ring 316SS Monel Monel Monel MonelAdjusting Ring Pin 316SS Monel Monel Monel MonelSpindle Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750 Inconel X750Adjusting Ring Pin Gasket Soft Iron Monel Monel Monel MonelGuide Gasket Soft Iron Monel Monel Monel MonelBase, Bonnet, Cap Carbon Steel Carbon Steel Carbon Steel Monel MonelBase Studs B7 Alloy Steel B7 Alloy Steel B7 Alloy Steel K Monel K MonelBase Stud Nuts 2H Carbon Steel 2H Carbon Steel 2H Carbon Steel K Monel K Monel

Guide 316SS 316SS Monel Monel MonelSpindle 410SS 410SS Monel Monel MonelAdjusting Screw 416SS 416SS Monel Monel MonelAdjusting Screw Locknut 416SS 416SS Monel Monel MonelSpring Alloy Steel Alloy Steel Alloy Steel Alloy Steel InconelSpring Washers Carbon Steel Carbon Steel Carbon Steel Carbon Steel MonelEductor Tube 304SS 304SS 304SS Monel MonelBonnet Gasket Soft Iron Monel Monel Monel MonelCap Gasket Soft Iron Monel Monel Monel Monel

Guide 316SS 316SS 316SS Monel MonelSpindle 410SS 410SS 410SS Monel MonelAdjusting Screw 416SS 416SS 416SS Monel MonelAdjusting Screw Locknut 416SS 416SS 416SS Monel MonelBellows Assembly — — — — —

Flange 316L SS 316L SS Monel Monel MonelBellows Inconel 625 Inconel 625 Monel Monel MonelRing 316L SS 316L SS Monel Monel Monel

Bellows Gasket Soft Iron Monel Monel Monel MonelSpring Alloy Steel Alloy Steel Alloy Steel Alloy Steel InconelSpring Washers Carbon Steel Carbon Steel Carbon Steel Carbon Steel MonelBonnet Gasket Soft Iron Soft Iron Soft Iron Monel MonelCap Gasket Soft Iron Monel Monel Monel Monel

M1 MB (M 1 ) M2 M3 M4



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/M3 or 1910-30L/M3.


1900Materials


Corrosive Service

Corrosive Service, Hastelloy Material1,2

Component

Common Components

Nozzle Hastelloy C Hastelloy C Hastelloy C Hastelloy CDisc Hastelloy C Hastelloy C Hastelloy C Hastelloy CDisc Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS Hastelloy C Hastelloy C Hastelloy CAdjusting Ring 316SS Hastelloy C Hastelloy C Hastelloy CAdjusting Ring Pin 316SS Hastelloy C Hastelloy C Hastelloy CSpindle Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750Adjusting Ring Pin Gasket Soft Iron Monel Monel MonelGuide Gasket Soft Iron Monel Monel MonelBase, Bonnet, Cap Carbon Steel Carbon Steel Hastelloy C Hastelloy CBase Studs B7 Alloy Steel B7 Alloy Steel Hastelloy C Hastelloy CBase Stud Nuts 2H Carbon Steel 2H Carbon Steel Hastelloy C Hastelloy C

Guide 316SS Hastelloy C Hastelloy C Hastelloy CSpindle 410SS Hastelloy C Hastelloy C Hastelloy CAdjusting Screw 416SS Hastelloy C Hastelloy C Hastelloy CAdjusting Screw Locknut 416SS Hastelloy C Hastelloy C Hastelloy CSpring Alloy Steel Alloy Steel Alloy Steel Hastelloy CSpring Washers Carbon Steel Carbon Steel Carbon Steel Hastelloy CEductor Tube 304SS 304SS Hastelloy C Hastelloy CBonnet Gasket Soft Iron Monel Monel MonelCap Gasket Soft Iron Monel Monel Monel

Guide 316SS 316SS Hastelloy C Hastelloy CSpindle 410SS 410SS Hastelloy C Hastelloy CAdjusting Screw 416SS 416SS Hastelloy C Hastelloy CAdjusting Screw Locknut 416SS 416SS Hastelloy C Hastelloy CBellows Assembly — — — —

Flange 316L SS Hastelloy C Hastelloy C Hastelloy CBellows Inconel 625 Hastelloy C Hastelloy C Hastelloy CRing 316L SS Hastelloy C Hastelloy C Hastelloy C

Bellows Gasket Soft Iron Monel Monel MonelSpring Alloy Steel Alloy Steel Alloy Steel Hastelloy CSpring Washer Carbon Steel Carbon Steel Carbon Steel Hastelloy CBonnet Gasket Soft Iron Soft Iron Monel MonelCap Gasket Soft Iron Monel Monel Monel

H1 H2 H3 H4



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/H3 or 1910-30L/H3.


1900Materials

1900 (SRV-1/Q2.02)1900.31

Low Temperature

Special Materials for Low Process Fluid Temperature1,2

Component

Common Components

Nozzle 316SS 316SS 316SSDisc 316SS 316SS 316SSDisc Retainer Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS 316SS 316SSAdjusting Ring 316SS 316SS 316SSAdjusting Ring Pin 316SS 316SS 316SSSpindle Retainer Inconel X750 Inconel X750 Inconel X750Cap Gasket Monel Monel MonelAdjusting Ring Pin Gasket Monel Monel MonelGuide Gasket Monel Monel MonelBase 316SS 316SS 316SSBonnet Carbon Steel 316SS 316SSCap Carbon Steel 316SS 316SSBase Studs Gr. B8M Gr. B8M Gr. B8MBase Stud Nuts Gr. 8M Gr. 8M Gr. 8M

Guide 316SS 316SS 316SSSpindle 410SS 316SS 316SSAdjusting Screw 416SS 316SS 316SSAdjusting Screw Nut 416SS 316SS 316SSSpring Alloy Steel 316SS 316SSSpring Washers 316SS 316SS 316SSEductor Tube 304SS 316SS 316SSBonnet Gasket Monel Monel Monel

Guide 316SS 316SS 316SSSpindle 410SS 316SS 316SSAdjusting Screw 416SS 316SS 316SSAdjusting Screw Nut 416SS 316SS 316SSBellows Assembly — — —

Flange 316L SS 316L SS 316L SSBellows Inconel 625 Inconel 625 316L SSRing 316L SS 316L SS 316L SS

Bellows Gasket Monel Monel MonelSpring Alloy Steel 316SS 316SSSpring Washer Carbon Steel 316SS 316SSBonnet Gasket Monel Monel Monel



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/L3 or 1910-30L/L3.3 SA 352LCC material can be utilized down to -50°F (-45°C) for bases, bonnets, or caps when requested.

-21°F to -75°F -76°F to -150°F -151°F to -450°F-29°C to -59°C -60°C to -101°C -102°C to -268°C

L13 L2 L3

1900Materials


Low Temperature

Special Materials for Low Ambient Temperatures(to -50°F or -45°C1,2)

Component

Common Components

Nozzle 316SSDisc 316SSDisc Retainer Inconel X750Disc Holder 316SSAdjusting Ring 316SSAdjusting Ring Pin 316SSSpindle Retainer Inconel X750Adjusting Ring Pin Gasket Soft IronGuide Gasket Soft IronBase, Bonnet, Cap LCC Carbon SteelBase Studs B8MBase Stud Nuts 8M

Guide 316SSSpindle 410SSAdjusting Screw 416SSAdjusting Screw Nut 416SSSpring Alloy SteelSpring Washers 316SSEductor Tube 304SSBonnet Gasket Soft IronCap Gasket Soft Iron

Guide 316SSSpindle 410SSAdjusting Screw 416SSAdjusting Screw Nut 416SSBellows Assembly —

Flange 316L SSBellows Inconel 625Ring 316L SS

Bellows Gasket Soft IronSpring Alloy SteelSpring Washers 316SSBonnet Gasket Soft IronCap Gasket Soft Iron

C13



NOTES: 1 The materials in red denote variation from standard material construction.2 Media temperature may impact valve temperature. Contact factory for assistance.3 To specify valves, add material designation to the valve type, 1910L/C1 or 1910-30L/C1.


1900Materials

1900 (SRV-1/Q2.02)1900.33

High TemperatureSpecial Materials for Low Process Fluid Temperature1,2

Component

Common Components

Nozzle 316SS 316SS/StellitedDisc 316SS Inconel X750Disc Retainer Inconel X750 Inconel X750Disc Holder 316SS Glide -Aloy Treated 316SS Glide -Aloy TreatedAdjusting Ring 316SS 316SSAdjusting Ring Pin 316SS 316SSSpindle Retainer Inconel X750 Inconel X750Cap Gasket Monel N/AAdjusting Ring Pin Gasket Monel MonelGuide Gasket Monel MonelBase 316SS 316SSBonnet 316SS Slotted 316SSCap Carbon Steel Carbon SteelBase Studs Gr. B8M Gr. B8MBase Stud Nuts Gr. 8M Gr. 8MDeflector Plate N/A 304SS

Guide 316SS 316SS Glide-Aloy TreatedSpindle 410SS 316SS/StellitedAdjusting Screw 416SS 416SSAdjusting Screw Locknut 416SS 416SSSpring Inconel X750 or Tungsten Inconel X750 or TungstenSpring Washers Carbon Steel 410SSEductor Tube 304SS N/ABonnet Gasket Monel N/A

Guide 316SS 316SS Glide-Aloy TreatedSpindle 410SS 316SS/StellitedAdjusting Screw 416SS 416SSAdjusting Screw Locknut 416SS 416SSBellows Assembly

Flange Inconel 625 Inconel 625Bellows Inconel 625 Inconel 625Ring Inconel 625 Inconel 625

Bellows Gasket Monel MonelSpring Inconel X750 or Tungsten Inconel X750 or TungstenSpring Washer Carbon Steel 410SSBonnet Gasket Monel N/A



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1920L/T2 or 1920-30L/T2.3 All T2 valves have ANSI Class 300 outlet flanges.4 Consult factory for temperatures above 1500°F (815°C).

1001°F to 1200°F 1201°F to 1500°F538°C to 649°C 649°C to 815°C

T1 T23,4

1900Materials


In some industries served by CONSOLIDATED, there are lethal service applications. These applications require special consideration as detailed below. Should you feel that yourapplication may be for lethal service, please review this information. “LETHAL SERVICE” should be prominently indicated in your discussions, inquiries, or purchase orders.

I. DefinitionASME B & PVC, Section VIII (Division 1) states that it is the responsibility of theuser to state that the valve will be in lethal service.

IMPORTANT

CONSOLIDATED does not determine if a fluid is lethal. The customer must specifythe fluid is lethal and his paperwork should be clearly stamped, identifying theapplication as a lethal fluid.

The ASME Code definition is as follows:

Lethal Substance - Poisonous gases or liquids of such a nature that a verysmall amount of the gas or the vapor of the liquid, mixed or unmixed withair, is dangerous to life when inhaled.

ASME B31.3, a chemical plant and petroleum refining piping standard, suppliesa similar definition, which they call a “Category M Fluid Service”.

II. Valve Requirements for Lethal Service ApplicationA. Only closed bonnet valves with a screwed or bolted cap or packed lever

can be used for lethal service.B. Valve model numbers that are acceptable for lethal service after

modification are 1905/1910 conventional and bellows flanged valves.C. It is recommended that a soft seat design be used for improved tightness.D. When service temperature exceeds 450°F (232°C), bolting material

review is required by Dresser Measurement Engineering.E. Use non-sparking material for flammable media. Examples are Bronze,

316 Stainless Steel, and Monel.

III. Base, Bonnet, and Cap Casting RequirementsA. Each casting requires 100% visual inspectionB. Each casting requires complete surface examination either by magnetic

particle for steel castings or liquid penetrant for stainless castings.C. Each casting shall have radiographic examination.D. All repairs to base, bonnet, and cap castings must be documented.E. All threads must be inspected for continuity of threadsF. Hydrotest hold time for ten (10) minutes.G. The base drain plug is to be sealed by seal welding a plug of the same

material as the base.H. The bonnet vent is to be sealed in accordance with paragraph G for

conventional valves (non -bellows). Bellows valves are to have the ventconnection vented to a safe location.

IV. Additional RequirementsA. Each bellows requires a mass spectrometer leak test to 1 x 10-7 cc/sec to

be imposed.B. It is necessary to seal the nozzle -base joint. The customer must state

their preference between a seal weld or O -Ring joint, depending onconformance of their maintenance practice.

C. The nozzle and disc require hydrotesting with a hold time for a minimumof ten (10) minutes.

D. Cleaning procedures and lubricants used shall be acceptable for lethal service.E. Back pressure testing is required. Documentation of test is required.

1900 Valves for Lethal Service

1900Materials

1900 (SRV-1/Q2.02)1900.35

O-Ring Selection Table - Durometer (USCS Units)

1900D & E

1900F

1900G

1900H

1900J

1900K

1900L

1900M

1900N

1900P

1900Q

1900R

19004

1900V

1900W

5 to 3505 to 3505 to 3755 to 3755 to 3155 to 2355 to 2355 to 2355 to 2355 to 2005 to 1705 to 1205 to 80

––

120 to 800120 to 800125 to 780140 to 78045 to 780125 to 58075 to 58070 to 58040 to 58030 to 50040 to 42025 to 30015 to 20015 to 3007 to 300


2000 to 60002000 to 60001900 to 37051900 to 27501900 to 27001400 to 22201400 to 1500

––––––

15 to 30015 to 300


Valve Type70 - 751501 902 Teflon3

-300°F to 200°FTeflon3

201°F to 500°F

Set Pressure Range (psig)

O-Ring Selection

NOTES: 1 Maximum set pressure for silicone compounds is half of the maximum value.2 The E962-90D 0-Ring can be used in steam service in applications down to 15 psig.3 Teflon will not be supplied for conditions that deviate from these ranges.

1900Materials


O-Ring Temperature Limits

Nitrile

Fluorocarbon

Neoprene

Teflon

Silicone

Kalrez3

Ethylene/Propylene

Materials Durometer Description5 Temp. Limits (°F) Temp. Limits (°C)

507090704

5070

75 & 802

9075

507590

5070

5070

N/A

82759165

N299-50 or N1009-50N674-70N552-90

N1173-70

E981-50E603-70

E740-75 & E515-80E962-901

E962-75

V986-50V747-75 or V884-75V894-90 or V709-90

C267-50C944-70 or C873-70

S595-50S604-70

Teflon

1050LF407930181058

-45 to +225-40 to +250-40 to +350-25 to +300

-65 to +212-65 to +212-70 to +250-70 to +500

-60 to +250/400

-15 to +400-15 to +400-15 to +400

-45 to +300-45 to +300

-65 to +437-65 to +437

-300 to +500

-42 to +550-58 to +601-35 to +601-40 to +500

-43 to +107-40 to +121-40 to +177-31 to +149

-53 to +100-53 to +100-57 to +121-57 to +260

-51 to +121/204

-26 to +204-26 to +204-26 to +204

-43 to +149-43 to +149

-53 to +225-53 to +225

-184 to +260

-41 to +288-50 to +316-37 to +316-40 to +260

O-Ring Selection

NOTES: 1 EPR962-90D can be used on steam service to lower pressure limit of 15 psig.2 Set pressure ranges from durometer table shall apply to these compounds (for nuclear service, radiation environment).3 Consult factory before selecting.4 Consult factory before using. For use with freon 134A/ester oil service.5 Refer to Technical Section for O -Ring Selection Tables for various fluids.

1900Accessories

1900 (SRV-1/Q2.02)1900.37

Lifting MechanismsThe purpose of the lifting mechanism is to open the valve when thepressure under the valve disc is lower than the set pressure. Thesemechanisms are made in three basic types: plain lever, packed lever, andair-operated lifting device. The lifting lever may be used as follows:(1) to lift the disc from the valve seat periodically during the operation ofequipment to be sure that the disc holder is not frozen in the guide as aresult of corrosion, coking, sulphur deposits, etc. This will ensure protectionof the unit at all times. Operating pressure under the disc should beapproximately 75% of the set pressure when lifting in accordance with theASME Code; otherwise the lever assembly could be damaged.(2) to remove foreign particles which are sometimes trapped under theseat as the valve closes. Immediate cleaning of the valve seat with thepressure of the media, by use of the lifting lever, will correct an otherwiseleaking valve, save maintenance costs at a later date and in some caseswill avoid a shutdown of the equipment.(3) to vent equipment to the atmosphere or discharge piping.

Plain LeverThis lever assembly is not pressure - tight and should not be used whereback pressure is present or where the escape of vapor discharging froman open valve is undesirable around the lever assembly.

Packed LeverAs indicated by the name, this lifting lever assembly is packed around thelever shaft, so that leakage will not occur around the upper part of thevalve when the valve is open or when back pressure is present. Thepacked lifting lever should be used when positive protection againstleakage is required.

Bolted CapCONSOLIDATED Standard Safety Relief Valves are supplied with screwedcaps but bolted caps are available.

GagThe purpose of the gag is to hold the safety relief valve closed whileequipment is being subjected to an operational hydrostatic test. This isthe only purpose for which the gag is intended, and it can beaccomplished by pulling the gag hand - tight. Force should never beused. The gag should never be left in the valve during the operationof the equipment. It should be removed each time after using and hungin a safe, convenient location and the sealing plug reinstated andproperly torqued.

1900 Caps, Levers, and Accessories

ASME Codes require that a lifting lever must be supplied with the valve for steam, air, and hot water service over 140°F (60°C) applications.However, it need not be a sealed lifting mechanism. The ASME Codes do recommend that sealed lifting mechanisms be used; however, they arenot mandatory. The lifting lever may be omitted under Code Case 2203. However, Dresser requires that all orders for pressure relief valves withoutlevers or blowdown valves for steam, air, and water over 140°F (60°C) state specifically that the valves are being purchased per Code Case 2203.The purchaser is responsible for obtaining jurisdictional authorization for use of Code Case 2203. Thermal Relief Valves: When ASME Code stamped valves are used for thermal relief applications, the ASME Code guidelines shall be followed inregard to lifting levers.

ASME B & PVC, Section VIII, Lever Requirements

1900Accessories


Air-Operated Lifting DeviceThe Air Operated Lifting Device uses an air cylinder toobtain lifting power to open the valve from a remotecontrol station. Normal operation of the safety reliefvalve is independent of the lifting device. Please specify actual required conditions, otherwisethe device will be supplied to operate with at least75% of set pressure under the disc in accordancewith the ASME Code. Requirements for special application: valve size, setpressure, minimum pressure at which the valvemust be kept open, air pressure for operator, orelectrical characteristics for solenoid operation.Regulated air, not to exceed 100 psig, is requiredfor operation.

Valve Position Indicators

Slotted Bonnet Steam Jacket

Valve Position Indicators in general, are a micro switch apparatus used for remote indication of the opening of a Safety Relief Valve. It is designed toactivate warning devices such as control panel lights or auditory indicators. This option enhances control function of operators located in remote

control stations. Please advise voltage requirements for proper selection of micro switch when ordering.

Vent Bug Screen(Available in 1900-30 bellows valve only)

Air Cylinder

Mounting Stud

Stud Nut

Pin

Lever

Clevis

Lifting Fork

Mounting Plate

Cap

Release Locknut

Release Nut

Cap Bolt

Cap Gasket

Spindle

Lever Shaft

Lever Shaft Collar

Collar Retaining Ring

Packing Nut

Packing Lever Nut

1900Accessories

1900 (SRV-1/Q2.02)1900.39

Packed Lever

As indicated by the name, this lifting lever assembly is packed around the lever shaft, so that leakage will not occur around the upper part ofthe valve when the valve is open or when back pressure is present. The packed lifting lever should be used when positive protection againstleakage is required.

Plain Lever

This lever assembly is not pressure - tight and should not be used where back pressure is present or where the escape of vapor discharging from anopen valve is undesirable around the lever assembly. It is designed with either a one or two -piece lever as illustrated below. The design is basedon valve size and/or valve set pressure.

36

35

26

28

2924

40

One-Piece Lever Design Two-Piece Lever Design

31

33

23

27

25

28

29

30

32

34

1900Accessories


Bolted Cap

CONSOLIDATED standard safety relief valves are supplied with screwed caps, but bolted caps are available.

Cap with Gag

The purpose of the gag is to hold the safety relief valve closed while equipment is being subjected to an operational hydrostatic test. This is the onlypurpose for which the gag is intended, and it can be accomplished by pulling the gag hand - tight. Force should never be used. The gag should neverbe left in the valve during the operation of the equipment. It should be removed each time after using and hung in a safe, convenient location.

22

25

27

39

3837

1900Accessories

1900 (SRV-1/Q2.02)1900.41

NOTES: 1 The materials in red denote variation from standard material construction.2 Gasket material is Monel for A2, H2, MB, M2 and S2 construction.

Cap and Lever Construction1

Standard, Alloy, and Hastelloy Material

Cap Carbon Steel Alloy 20 Hastelloy C Carbon SteelCap Bolts Carbon Steel Alloy 20 Hastelloy C Carbon SteelCap Gasket2 Soft Iron Monel Monel MonelLever Malleable Iron Malleable Iron Malleable Iron Malleable IronLever Shaft 410/416SS 410/416SS 410/416SS 410/416SSPacking Grafoil Grafoil Grafoil Grafoil or GraphlockPacking Nut 410/416SS 410/416SS 410/416SS 410/416SSLifting Fork Malleable Iron Malleable Iron Malleable Iron Malleable IronRelease Nut Carbon Steel Carbon Steel Carbon Steel Carbon SteelRelease Lock Nut Carbon Steel Carbon Steel Carbon Steel Carbon Steel

Gag Bolt Carbon Steel Carbon Steel Carbon Steel Carbon SteelSealing Plug Carbon Steel Alloy 20 Hastelloy C Carbon SteelPlug Gasket2 Soft Iron Monel Monel Monel

Cap Carbon Steel Alloy 20 Hastelloy C Carbon SteelCap Bolts Carbon Steel Alloy 20 Hastelloy C Carbon SteelCap Gasket2 Soft Iron Monel Monel Monel

Cap Malleable Iron N/A N/A Malleable IronCap Set Screw Carbon Steel N/A N/A Carbon SteelTop Lever Malleable Iron N/A N/A Malleable IronDrop Lever Malleable Iron N/A N/A Malleable IronRelease Nut Carbon Steel N/A N/A Carbon SteelRelease Lock Nut Carbon Steel N/A N/A Carbon SteelPlain Lever (One Piece) Malleable Iron N/A N/A Malleable Iron

23252730323334312829

24263536282940

222527

373839

Gag

Bolted Cap

Plain Lever

Packed Lever

Cap Type Component Standard, A1, A2, H1, H2,L1, M1, MB, M2, S2, T1, T2

Alloy 20

A3 and A4

Hastelloy

H3 and H4

HF Alky

HA


1900Accessories


NOTE: 1 The materials in red denote variation from standard material construction.

Cap and Lever Construction1

Monel, Stainless, and Low Temperature Material

Cap Monel 316SS 316SSCap Bolts Monel K500 B8M B8MCap Gasket Monel Monel MonelLever Malleable Iron Malleable Iron Malleable IronLever Shaft 410/416SS 316SS 410/416SSPacking Grafoil Grafoil GrafoilPacking Nut 410/416SS 316SS 410/416SSLifting Fork Malleable Iron 316SS 316SSRelease Nut Carbon Steel 316SS 316SSRelease Lock Nut Carbon Steel 316SS 316SS

Gag Bolt Carbon Steel Carbon Steel Carbon SteelSealing Plug Monel 316SS 316SSPlug Gasket Monel Monel Monel

Cap Monel 316SS 316SSCap Bolts Monel K500 B8M B8MCap Gasket Monel Monel Monel

Cap N/A 316SS 316SSCap Set Screw N/A 316SS 316SSTop Lever N/A Malleable Iron Malleable IronDrop Lever N/A Malleable Iron Malleable IronRelease Nut N/A Carbon Steel Carbon SteelRelease Lock Nut N/A Carbon Steel Carbon SteelPlain Lever N/A Malleable Iron Malleable Iron

23252730323334312829

24263536282940

222527

373839

Gag

Bolted Cap

Plain Lever

Packed Lever

Cap Type Component Stainless

S3 and S4

Monel

M3 and M4

Low Temperature

L2 and L3


1900Accessories

1900 (SRV-1/Q2.02)1900.43

Jacketing of Relief ValvesCONSOLIDATED valve offers simple solutions to your heating problems:Bolt - on Jackets.Viscous materials that freeze or harden in relief valve nozzles createhazardous conditions. Process pipe jacketing or tracing may not providesufficient heat to the area in and around the relief valve seat. During apressure surge, some of the solid materials may stick in and around theseating area, keeping the valve from functioning and re-seating properly.This would result in leakage around the valve seating surface.The solution to this problem is the Bolt-on Jacket. This jacket is a twopiece aluminum casting with a steel pressure chamber embedded in thealuminum jacket casting. The pressure chamber is fabricated of standardpressure vessel materials for various heating fluids and servicetemperatures. The chamber is designed and tested in accordance with theASME B & PVC, Section VIII, Div. I. The jacket casting conducts heat fromthe pressure chamber and rapidly distributes it evenly over the outersurface of the relief valve.The aluminum casting distributes heat only. It carries no pressure load atany time. Heating fluid is transferred from one half of the jacket to theother by an external connector. A thin layer of heat transfer cement isused between the jacket and the relief valve to promote effective heattransfer by filling any air gaps between the jacket and the relief valve.Bolt - on Jacket halves bolt together for quick installation and unbolt forready access to the relief valve for easy maintenance. The jackets coverthe jacket fully from flange to flange providing uniform heat to all processwetted surfaces. Standard service ratings for the jacket are 150 psig and500°F. Higher ratings are available upon request.Bolt -on Jackets may be ordered with adjacent flange coverage and with avariety of heating medium connections. Canadian Registration is availablefor all provinces.Bolt - on Jackets are operating successfully on relief valves in manydifferent process service applications world wide. Customers shouldconsider jacketing the relief valves whenever the adjacent vessel or pipingis heated in some manner. The following lists process applications thattypically require jacketing of the relief valve.

• Acrylic Acid• Ammonium Nitrate• Coal Tars• Caprolactam• Cyanuric Chloride• DMT• DNT• Fluoropolymers• LLDPE• Olefins• Phosphorous• Polypropylene• Polystyrene Resins• Phthalic Anhydride• Sulphuric Acid• Sulphur Dioxide• Some Surfactants• Tall Oils• TMA

Bolt-on Jackets

1900Accessories


To ensure we provide the proper jacket coverage; please answer the following questions:(1) Is the process operating at elevated temperatures?(2) What is the process?(3) What is the temperature of the process being maintained?(4) What heating medium is being used in your jacket? What pressure and temperature is this medium?(5) What type of jacket connections are required?(6) How is the temperature being maintained on the process piping and other equipment (valves, pumps, meters, etc.)?The relief valve will probably need a Bolt - on Jacket if it is operating in one of the process services listed above or if the adjacent pipingand equipment is heated.Contact the Factory for assistance.

Typical Bolt-on Jacket

1900Dimensions & Weights

1900 (SRV-1/Q2.02)1900.45

This table applies to the standard 1900 Series regardless of materials ofconstruction.The tables state the inlet flange size of the valve and the flange ratingfollowed by the outlet flange size and the flange rating.

EXAMPLE: 1 - 150 x 2 - 150

Inlet is 1" size with a Class 150# flange. Outlet is 2" size with a Class150# flange.

If the valve you are reviewing has an inlet or outlet size different from thatstated, the dimensions “A” through “S” and weight may not apply.

NOTE: “USCS” Units refers to “U.S. Customary System” Units, the adapted U.S.standard formerly recognized as “English” Units.

1900 Flanged Series

Drain

1900Conventional

Valve CD

A

S

B



1900 Series ValvesUSCS Dimensions (in.) and Weights (lbs.)

Drain

Approx.Weight (lbs.)SType A B

STD BellowsD

C

1 - 150 x 2 - 1501 - 150 x 2 - 150

1-1/2 - 150 x 2 - 1501-1/2 - 150 x 3 - 150*1-1/2 - 150 x 3 - 150

2 - 150 x 3 - 1503 - 150 x 4 - 1503 - 150 x 4 - 1504 - 150 x 6 - 1504 - 150 x 6 - 1504 - 150 x 6 - 1506 - 150 x 8 - 1506 - 150 x 8 - 1508 - 150 x 10 - 15010 - 150 x 14 - 15012 - 150 x 16 - 150

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150*1-1/2 - 300 x 3 - 150

2 - 300 x 3 - 1503 - 300 x 4 - 1503 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 1506 - 300 x 8 - 1508 - 300 x 10 - 15010 - 300 x 14 - 15012 - 300 x 16 - 150

1905D1905E1905F1905G1905H1905J1905K1905L1905M1905N1905P1905Q1905R1905T1905V1905W1906D1906E1906F1906G1906H1906J1906K1906L1906M1906N1906P1906Q1906R1906T1906V1906W

4-1/84-1/84-7/84-7/85-1/85-3/86-1/86-1/8

77-3/47-1/89-7/169-7/1610-7/8

1214

4-1/84-1/84-7/84-7/85-1/85-3/86-1/86-1/8

77-3/47-1/89-7/169-7/1610-7/8

1214

4-1/24-1/24-3/44-3/44-7/84-7/86-3/86-1/27-1/48-1/4

99-1/29-1/2

111616

4-1/24-1/24-3/44-3/44-7/84-7/86-3/86-1/27-1/48-1/4

99-1/29-1/2

111616

1717

17-3/417-3/419-1/221-1/424-1/228-3/429-3/4

3334-1/4

4143

47-1/262701717

17-3/417-3/419-1/221-1/424-1/228-3/429-3/4

3334-1/4

4143

47-1/46270

1818

18-3/419

19-1/221-1/424-1/228-3/429-3/4

3334-1/4

4143

47-1/262701818

18-3/419

19-1/221-1/424-1/228-3/429-3/4

3334-1/4

4143

47-1/462 70

5-7/165-7/165-7/165-7/166-5/166-7/87-3/88-7/89-3/810-1/8

1113-5/814-1/216-1/221-3/424-1/25-7/165-7/165-7/165-7/166-5/166-7/87-3/88-7/89-3/810-1/8

1113-5/814-1/216-1/221-3/424-1/2

1-1/81-1/81-1/41-1/41-1/41-5/161-7/161-7/161-5/81-5/81-5/8

1-13/161-13/161-15/16

2 2-13/161-3/81-3/81-1/21-1/21-9/161-9/161-13/161-13/161-15/161-15/161-15/162-1/42-1/42-7/162-11/162-15/16

4040455560751101401852202604304956201600280040404555607511514519022527044551064017002860

Size (in.) and Class

NOTE: Inlet and outlet combinations as well as orifices sizes shown in the table above are compliant with both API Standard 526, Third Edition, 1984 and FourthEdition, 1995, except those sizes marked * comply only with API 526, Fourth Edition, 1995. For replacement valves that do not comply with botheditions, contact the factory for verification of dimensions and inlet and outlet combinations. The V & W orifice valves are not an API approved orifice size.

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.47



STD BellowsD

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150*

2 - 300 x 3 - 1503 - 300 x 4 - 150*3 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 150

6 - 300 x 10 - 1508 - 300 x 10 - 150#10 - 300 x 14 - 150#12 - 300 x 16 -150#1 - 600 x 2 - 150#1 - 600 x 2 - 150#

1-1/2 - 600 x 2 - 150#1-1/2 - 600 x 3 - 150#*

2 - 600 x 3 - 150#3 - 600 x 4 - 150#*3 - 600 x 4 - 150#4 - 600 x 6 - 150 #4 - 600 x 6 - 150 #4 - 600 x 6 - 150 #4 - 600 x 6 - 150 #6 - 600 x 8 - 150#6 - 600 x 10 - 150#

1910D1910E1910F1910G1910H1910J1910K1910L1910M1910N1910P1910Q1910R1910T1910V1910W1912D1912E1912F1912G1912H1912J1912K1912L1912M1912N1912P1912Q1912R

4-1/84-1/84-7/84-7/85-1/87-1/46-1/87-1/16

77-3/48-7/89-7/169-7/1610-7/8

1214

4-1/84-1/84-7/84-7/86-1/167-1/47-1/47-1/16

77-3/48-7/89-7/169-7/16

4-1/24-1/2

66

4-7/87-1/86-3/87-1/87-1/48-1/4

109-1/210-1/2

111616

4-1/24-1/2

66

6-3/87-1/87-1/8

88

8-3/410

9-1/210-1/2

17-1/217-1/218-1/418-1/420-1/425-5/8

283232

34-1/441

43-1/445-1/253-3/8

6670

18-1/418-1/4

191923

29-7/829-1/4

3236-1/4

3943-1/2

4647-1/2

18-1/218-1/219-1/419-1/220-1/425-5/8

283232

34-1/441

43-1/445-1/253-3/8

6670

19-1/419-1/4

2020-1/4

2329-7/829-1/4

3236-1/4

3943-1/2

4647-1/2

5-7/165-7/165-7/165-7/166-5/167-3/87-3/49-1/29-3/810-1/211-1/2

1414-1/216-1/224-1/224v1/26-5/166-5/166-5/166-5/16

79

7-3/49-1/210-3/411-3/413-7/814-1/415-1/8

1-3/81-3/81-9/161-9/161-11/161-13/161-15/161-15/161-15/161-15/161-15/162-1/42-1/42-7/162-11/162-15/161-3/81-3/81-9/161-9/16

1-11/161-13/161-15/162-3/162-3/162-3/162-3/162-11/162-11/16

5050506065100140220230260350530550840200028605555606585170150230300360530645675

CSize (in.) and Class

NOTE: Inlet and outlet combinations as well as orifices sizes shown in the table above are compliant with both API Standard 526, Third Edition, 1984 and FourthEdition, 1995, except those sizes marked * comply only with API 526, Fourth Edition, 1995. For replacement valves that do not comply with both editions,contact the factory for verification of dimensions and inlet and outlet combinations. The V & W orifice valves are not an API approved orifice size.

Drain

C

A

S

B

D





STD BellowsD

1-1/2 - 900 x 2 - 3001-1/2 - 900 x 2 - 3001-1/2 - 900 x 3 - 300*1-1/2 - 900 x 3 - 300*

2 - 900 x 3 - 1503 - 900 x 4 - 1503 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 150

1-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 3 - 300*

2 - 1500 x 3 - 3002 - 1500 x 3 - 3003 - 1500 x 4 - 3003 - 1500 x 6 - 3004 - 1500 x 6 - 150

1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*

2 - 2500 x 3 - 300

1914D1914E1914F1914G1914H1914J1914K1914L1914M1914N1914P1916D1916E1916F1916G1916H1916J1916K1916L1918D1918E1918F1918G

4-1/84-1/84-7/84-7/86-1/167-1/4

7-13/167-3/47-3/47-3/48-7/84-1/84-1/84-7/86-1/86-1/167-1/47-3/47-3/45-1/25-1/25-1/26-1/8

5-1/25-1/26-1/26-1/26-3/87-1/88-1/28-3/48-3/48-3/4

105-1/251/26-1/26-3/46-3/87-1/88-1/28-3/4

777

6-3/4

21-3/421-3/422-1/222-1/2

2629-3/435-1/437-1/4

3739

43-1/221-3/421-3/422-1/223-3/4

26 29-3/435-1/437-1/426-1/226-1/226-1/223-3/4

22-3/422-3/423-1/223-3/4

2629-3/435-1/437-1/4

3739

43-1/222-3/422-3/423-1/2

2526

29-3/435-1/437-1/427-1/227-1/227-1/2

25

7-13/167-13/167-13/167-13/168-1/4

910-1/212-1/410-3/411-3/413-7/8

7-13/167-13/167-13/167-13/168-1/4

910-1/212-1/48-7/88-7/88-7/8

7-13/16

1-15/161-15/161-15/161-15/162-3/162-3/162-3/162-7/162-7/162-7/162-7/161-15/161-15/161-15/162-3/162-3/162-9/162-9/162-13/162-7/162-7/162-7/162-11/16

9595100951301953003603403805459595100100140220320370150150150110

CSize (in.) and Class


Drain

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.49


Approx.WeightSSize (in.) and Class Type A B

STD Bellows

CD

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150*

2 - 300 x 3 - 1503 - 300 x 4 - 150*3 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 1506 - 300 x 8 - 1508 - 300 x 10 - 15010 - 300 x 14 - 15012 - 300 x 16 - 1501 - 600 x 2 - 1501 - 600 x 2 - 150

1-1/2 - 600 x 2 - 1501-1/2 - 600 x 3 - 150*

2 - 600 x 3 - 1503 - 600 x 4 - 150*3 - 600 x 4 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1506 - 600 x 8 - 1506 - 600 x 10 - 1504 - 600 x 6 - 150

1920D1920E1920F1920G1920H1920J1920K1920L1920M1920N1920P1920Q1920R1920T1920V1920W1922D1922E1922F1922G1922H1922J1922K1922L1922M1922N1922Q1922R1923P

4-1/84-1/84-7/84-7/85-1/87-1/46-1/87-1/16

77-3/48-7/89-7/169-7/1610-7/8

1214

4-1/84-1/84-7/84-7/85-1/87-1/46-1/87-1/16

77-3/49-7/169-7/168-7/8

4-1/24-1/2

66

4-7/87-1/86-3/87-1/87-1/48-1/4

109-1/29-1/2

111616

4-1/24-1/2

66

4-7/87-1/86-3/8

88

8-3/49-1/210-1/2

10

17-1/217-1/218-1/418-1/420-1/425-5/8

283232

34-1/4414143

53-3/86670

17-1/217-1/218-1/4

1920-1/425-5/8

2832

36-1/43946

47-1/243-1/2

18-1/218-1/219-1/419-1/220-1/425-5/8

283232

34-1/4414143

53-3/86670

18-1/218-1/219-1/420-1/420-1/425-5/8

2832

36-1/43946

47-1/243-1/2

5-7/165-7/165-7/165-7/166-5/167-3/87-3/49-1/29-3/810-1/211-1/213-5/814-1/216-1/224-1/224-1/25-7/165-7/165-7/166-5/166-5/167-3/87-3/49-1/210-3/411-3/414-1/415-1/813-7/8

1-3/81-3/81-9/161-9/161-11/161-13/161-15/161-15/161-15/161-15/161-15/162-1/42-1/42-7/162-11/162-15/161-3/81-3/81-9/161-9/161-11/161-13/161-15/162-3/162-3/162-3/162-11/162-11/162-3/16

5050506065100140220230260350445510840200028605050506565100140230300360645675530


Drain

C

A

S

B

D




Approx.Weight (lbs.)SSize (in.) and Class Type A B

STD Bellows

CD

1-1/2 - 900 x 2 - 3001-1/2 - 900 x 2 - 3001-1/2 - 900 x 3 - 300*1-1/2 - 900 x 3 - 300*

2 - 900 x 3 - 1503 - 900 x 4 - 150*3 - 900 x 6 - 150*4 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 150

1-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 3 - 300*

2 - 1500 x 3 - 3002 - 1500 x 3 - 3003 - 1500 x 4 - 3003 - 1500 x 6 - 3004 - 1500 x 6 - 150

1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*

2 - 2500 x 3 - 300


4-1/84-1/84-7/84-7/86-1/167-1/4

7-13/167-3/47-3/47-3/48-7/84-1/84-1/84-7/86-1/86-1/167-1/47-3/47-3/45-1/25-1/25-1/26-1/8

5-1/25-1/26-1/26-1/26-3/87-1/88-1/28-3/48-3/48-3/4

105-1/25-1/26-1/26-3/46-3/87-1/88-1/28-3/4

777

6-3/4

21-3/421-3/422-1/222-1/2

2329-7/835-1/437-1/4

3739

43-1/221-3/421-3/422-1/223-3/4

2629-3/435-1/437-1/426-1/226-1/226-1/223-3/4

22-3/422-3/423-1/223-3/4

2329-7/835-1/437-1/4

3739

43-1/222-3/422-3/423-1/2

2526

29-3/435-1/437-1/427-1/227-1/227-1/2

25

7-13/167-13/167-13/167-13/16

79

10-1/212-1/410-3/411-3/413-7/8

7-13/167-13/167-13/167-13/168-1/4

910-1/212-1/48-7/88-7/88-7/8

7-13/16

1-15/161-15/161-15/161-15/162-3/162-5/162-3/162-7/162-7/162-7/162-7/16

1-15/161-15/161-15/162-3/162-3/162-9/162-9/16

2-13/162-7/162-7/162-7/16

2-11/16

959510095901803003603403805459595100100140220320370150150150110


Drain

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.51

1900 Series ValvesMetric Dimensions (mm) and Weights (Kg)

Approx.Weight (Kg)SSize (in.) and Class Type A B

STD Bellows

CD

1 - 150 x 2 - 1501 - 150 x 2 - 150

1-1/2 - 150 x 2 - 1501-1/2 - 150 x 3 - 1501-1/2 - 150 x 3 - 150

2 - 150 x 3 - 1503 - 150 x 4 - 1503 - 150 x 4 - 1504 - 150 x 6 - 1504 - 150 x 6 - 1504 - 150 x 6 - 1506 - 150 x 8 - 1506 - 150 x 8 - 1508 - 150 x 10 - 15010 - 150 x 14 - 15012 - 150 x 16 - 150

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 1501-1/2 - 300 x 3 - 150

2 - 300 x 3 - 1503 - 300 x 4 - 1503 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 -1506 - 300 x 8 - 1506 - 300 x 8 -150

8 - 300 x 10 - 15010 - 300 x 14 - 15012 -300 x 16 - 150

1905D1905E1905F1905G1905H1905J1905K1905L1905M1905N1905P1905Q1905R1905T1905V1905W1906D1906E1906F1906G1906H1906J1906K1906L1906M1906N1906P1906Q1906R1906T1906V1906W

104.8104.8123.8123.8130.2136.5155.6155.6177.8196.9181

239.7239.7276.2304.8355.6104.8104.8123.8123.8130.2136.5155.6155.6177.8196.9181

239.7239.7276.2304.8355.6

114.3114.3120.7120.7123.8123.8161.9165.1184.2209.6228.6241.3241.3279.4406.4406.4114.3114.3120.7120.7123.8123.8161.9165.1184.2209.6228.6241.3241.3279.4406.4406.4

431.8431.8450.9450.9495.3539.8622.3730.3755.7838.2870

1041.41092.21206.51574.81778431.8431.8450.9450.9495.3539.8622.3730.3755.7938.2870

1041.41092.21200.21574.81778

457.2457.2476.3482.6495.3539.8622.3730.3755.7838.2870

1041.41092.21206.51574.81778457.2457.2476.3482.6495.3539.8622.3730.3755.7838.2870

1041.41092.21200.21574.81778

138.1138.1138.1138.1160.3174.6187.3225.4238.1257.2279.4346.1368.3419.1552.5622.3138.1138.1138.1138.1160.3174.6187.3225.4238.1257.2279.4346.1368.3419.1552.5622.3

28.628.631.831.831.833.336.536.541.341.341.34646

49.250.855.634.934.938.138.139.739.74646

49.249.249.257.257.261.968.374.6

18.118.120.424.927.234

49.963.583.999.8117.9195

224.5281.2725.81270.118.118.120.424.927.234

52.265.886.2102.1122.5201.9231.3290.3770.11300


Drain

C

A

S

B

D





STD Bellows

CD

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150

2 - 300 x 3 - 1503 - 300 x 4 - 1503 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 1506 - 300 x 10 - 1508 - 300 x 10 - 15010 - 300 x 14 - 15012 - 300 x 16 -1501 - 600 x 2 - 1501 - 600 x 2 - 150

1-1/2 - 600 x 2 - 1501-1/2 - 600 x 3 - 150

2 - 600 x 3 - 1503 - 600 x 4 - 1503 - 600 x 4 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1506 - 600 x 8 - 1506 - 600 x 10 - 150

1910D1910E1910F1910G1910H1910J1910K1910L1910M1910N1910P1910Q1910R1910T1910V1910W1912D1912E1912F1912G1912H1912J1912K1912L1912M1912N1912P1912Q1912R

104.8104.8123.8123.8130.2184.2155.6179.4177.8196.9225.4239.7239.7276.2304.8355.6104.8104.8123.8123.8154

184.2184.2179.4177.8196.9225.4239.7239.7

114.3114.3152.4152.4123.8181

161.9181

184.2209.6254

241.3266.7279.4406.4406.4114.3114.3152.4152.4161.9181181

203.2203.2222.3254

241.3266.7

444.5444.5463.6463.6514.4651

711.2812.8812.8870

1041.41098.61155.71355.71676.41778463.6463.6482.6482.6584.2759743

812.8920.8990.61104.91168.41206.5

469.9469.9489

495.3514.4651

711.2812.8812.8870

1041.41098.61155.71355.71676.41778489489508

514.4584.2759743

812.8920.8990.61104.91168.41206.5

138.1138.1138.1138.1160.3187.3196.9241.3238.1266.7292.1355.6368.3419.1622.3622.3160.3160.3160.3160.3177.8228.6196.9241.3273.1298.5352.4362

384.2

34.934.939.739.742.846

49.249.249.249.249.257.257.261.968.374.634.934.939.739.742.846

49.255.555.555.555.568.368.3

22.722.722.727.229.545.463.599.8104.3117.9158.8240.4249.5381

907.213002525

27.229.538.677.168

104.3136.1163.3240.4292.6306.5


Drain

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.53


STD Bellows

CD

1-1/2 - 900 x 2 - 3001-1/2 - 900 x 2 - 3001-1/2 - 900 x 3 - 300*1-1/2 - 900 x 3 - 300*

2 - 900 x 3 - 1503 - 900 x 4 - 1503 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 150

1-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 3 - 300*

2 - 1500 x 3 - 3002 - 1500 x 3 - 3003 - 1500 x 4 - 3003 - 1500 x 6 - 3004 - 1500 x 6 - 150

1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*

2 - 2500 x 3 - 300


104.8104.8123.8123.8154

184.2198.4196.9196.9196.9225.4104.8104.8123.8155.6154

184.2196.9196.9139.7139.7139.7155.6

139.7139.7165.1165.1161.9181

215.9222.3222.3222.3254

139.7139.7165.1171.5161.9181

215.9222.3177.8177.8177.8171.5

552.5552.5571.5571.5660.4755.7895.4946.2939.8990.61104.9552.5552.5571.5603.3660.4755.7895.4946.2673.1673.1673.1603.3

577.9577.9596.9603.3660.4755.7895.4946.2939.8990.61104.9577.9577.9596.9635.5660.4755.7895.4946.2698.5698.5698.5635

198.4198.4198.4198.4209.6228.6266.7311.2273.1298.5352.4198.4198.4198.4198.4209.6228.6266.7311.2225.4225.4225.4198.4

49.249.249.249.255.555.555.561.961.961.961.949.249.249.255.555.565.165.171.461.961.961.968.2

43.143.145.443.159

88.5136.1163.3154.2172.4247.243.143.145.445.463.599.8145.2167.8

686868

49.9



Drain

C

A

S

B

D




STD Bellows

CD


1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150*

2 - 300 x 3 - 1503 - 300 x 4 - 150*3 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 1506 - 300 x 8 - 1508 - 300 x 10 - 15010 - 300 x 14 - 15012 - 300 x 16 - 1501 - 600 x 2 - 1501 - 600 x 2 - 150

1-1/2 - 600 x 2 - 1501-1/2 - 600 x 3 - 150*

2 - 600 x 3 - 1503 - 600 x 4 - 150*3 - 600 x 4 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1506 - 600 x 8 - 1506 - 600 x 10 - 1504 - 600 x 6 - 150

1920D1920E1920F1920G1920H1920J1920K1920L1920M1920N1920P1920Q1920R1920T1920V1920W1922D1922E1922F1922G1922H1922J1922K1922L1922M1922N1922Q1922R1923P

104.8104.8123.8123.8130.2184.2155.6179.4177.8196.9225.4239.7239.7276.2304.8355.6104.8104.8123.8123.8130.2184.2155.6179.4177.8196.9239.7239.7225.4

114.3114.3152.4152.4123.8181

161.9181

184.2209.6254

241.3241.3279.4406.4406.4114.3114.3152.4152.4123.8181

161.9203.2203.2222.3241.3266.7254

444.5444.5463.6463.6514.4651

711.2812.8812.8870

1041.41041.41092.21355.71676.41778444.5444.5463.6482.6514.4651

711.2812.8920.8990.61168.41206.51104.9

469.9469.9489

495.3514.4651

711.2812.8812.8870

1041.41041.41092.21355.71676.41778469.9469.9489

514.4514.4651

711.2812.8920.8990.61168.41206.51104.9

138.1138.1138.1138.1160.3187.3196.9241.3238.1266.7292.1346.1368.3419.1622.3622.3138.1138.1138.1160.3160.3187.3196.9241.3273.1298.5362

384.2352.4

34.934.939.739.742.846

49.249.249.249.249.257.257.261.968.374.634.934.939.739.742.846

49.255.555.555.568.368.355.5

22.722.722.727.229.545.463.599.8104.3117.9158.8201.9231.3381

907.2130022.722.722.729.529.545.463.5104.3136.1163.3292.6306.2240.4


Drain

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.55



STD Bellows

CD

1-1/2 - 900 x 2 - 3001-1/2 - 900 x 2 - 3001-1/2 - 900 x 3 - 300*1-1/2 - 900 x 3 - 300*

2 - 900 x 3 - 1503 - 900 x 4 - 150*3 - 900 x 4 - 150*4 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 150

1-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 3 - 300*

2 - 1500 x 3 - 3002 - 1500 x 3 - 3003 - 1500 x 4 - 3003 - 1500 x 6 - 3004 - 1500 x 6 - 150

1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*

2 - 2500 x 3 - 300#


104.8104.8123.8123.8154

184.2198.4196.9196.9196.9225.4104.8104.8123.8155.6154

184.2196.9196.9139.7139.7139.7155.6

139.7139.7165.1165.1161.9181

215.9222.3222.3222.3254

139.7139.7165.1171.5161.9181

215.9222.3177.8177.8177.8171.5

552.5552.5571.5571.5584.2759

895.4946.2939.8990.61104.9552.5552.5571.5603.3660.4755.7895.4946.2673.1673.1673.1603.3

577.9577.9596.9603.3584.2759

895.4946.2939.8990.61104.9577.9577.9596.9635

660.4755.7895.4946.2698.5698.5698.5635

198.4198.4198.4198.4177.8228.6266.7311.2273.1298.5352.4198.4198.4198.4198.4209.6228.6266.7311.2225.4225.4225.4198.4

49.249.249.249.255.558.755.561.961.961.961.949.249.249.255.555.565.165.171.461.961.961.968.2

43.143.145.443.140.881.6136.1163.3154.2172.4247.243.143.145.445.463.599.8145.2167.8

686868

49.9


C

A

S

B

D

Drain

1900Pressure / Temperature


Minimum Set PressuresThe minimum set pressures of the 1900 flanged valves

are in accordance with the following table.

Pressure / Temperature Tables

How To Use Rating TablesThe included tables specify important data about the valve including valvesizes, flange ratings, pressure and temperature limits, back pressureratings, and materials with allowable temperature ranges.After determining valve size from the Valve Sizing section, or capacitytables in this section, select the proper set of tables and graphs (in thefollowing pages) for the size valve. Enter the pressure/temperaturegraphs and determine valve type. Review the table of data for that sizevalve to get other pertinent information.

NOTES: 1 The pressure/temperature limitations shown in the following tables arebased on the limits specified in API526 applicable to the 1900 seriessupplied in standard materials of construction. For pressure/temperaturelimitations of valves made from special materials, consult the factory or theSRVS sizing program. (Note that 1900-30 bellows design valve suppliedwith the standard Inconel 625 bellows is limited to a temperature range of400°F to 1500°F.)

2 ASME Class 300 outlet flanges are permitted for mating purposes only onvalves that are normally supplied with standard ASME Class 150 pressurerating. For back pressure applications exceeding the ASME Class 150pressure rating use SRVS sizing program or contact the factory for assistance.

3 When soft seats are used, they may govern the valve pressure/temperature rating.

Procedure

Enter the graph on page 1900.68 for the “J” size, select set pressure onthe bottom scale at 500 psig, follow this line vertically upward until itintersects the 100°F (38°C) line. The selection is a 1910Jc valve.

ResultsReferring to the table on page 1900.67, the valve is 3" - 300 x 4" - 150with a carbon steel body and spring. The back pressure limit issatisfactory for 50 psig back pressure.

SpringsWithin given temperature limits, alloy steel springs are specified.Because of material availability from vendors, most springs are of alloysteel construction which provides superior strength and corrosionresistant properties.

MaterialsThe operating temperature should be used to select the materials invalves for fire sizing applications.

Low Set Pressure Limit2

Orifice

DEFGHJKLMNPQRTVW

55544556697779157

15151515151010101010101010101515

Valve Set PressureBack PressureTemperature

Valve

500 psig50 psig100°F

“J”

Example

Conventional Valve(psig)

Bellows Valve1

(psig)

NOTES: 1 The bonnet must be vented when a bellows is used.2 Valves with set pressure less than 15 psig cannot be stamped with the ASME stamp.


1900 (SRV-1/Q2.02)1900.57

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Dc19

06Dc

1910

Dc19

12Dc

1914

Dc19

16Dc

1918

Dc19

05Dt

1906

Dt19

10Dt

1912

Dt19

14Dt

1916

Dt19

18Dt

1920

Dt19

22Dt

1924

Dt19

26Dt

1928

Dt19

05D/

L119

06D/

L119

10D/

L119

12D/

L119

14D/

L119

16D/

L119

18D/

L119

05D/

L219

06D/

L219

10D/

L219

12D/

L219

14D/

L219

16D/

L219

18D/

L219

05D/

L319

06D/

L319

10D/

L319

12D/

L319

14D/

L319

16D/

L319

18D/

L3

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

4000

— — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

6000 — — — — — — — — — — — — — —

185

285

615

1235

1845

3080

5135

185

285

615

1235

1845

3080

5135 — — — — — — — — — — — — — — — — — — — — — — — — — —

+800

+100

0St

anda

rdBe

llow

s

— — — — — — — — — — — — — — 225

445

670

1115

1860 — — — — — — — — — — — — — — — — — — — — —

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

1905

-30Dc

1906

-30Dc

1910

-30Dc

1912

-30Dc

1914

-30Dc

1916

-30Dc

1918

-30Dc

1905

-30Dt

1906

-30Dt

1910

-30Dt

1912

-30Dt

1914

-30Dt

1916

-30Dt

1918

-30Dt

1920

-30Dt

1922

-30Dt

1924

-30Dt

1926

-30Dt

1928

-30Dt

1905

-30D/

L119

06-30

D/L1

1910

-30D/

L119

12-30

D/L1

1914

-30D/

L119

16-30

D/L1

1918

-30D/

L119

05-30

D/L2

1906

-30D/

L219

10-30

D/L2

1912

-30D/

L219

14-30

D/L2

1916

-30D/

L219

18-30

D/L2

1905

-30D/

L319

06-30

D/L3

1910

-30D/

L319

12-30

D/L3

1914

-30D/

L319

16-30

D/L3

1918

-30D/

L3

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

— — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

4000 — — — — — — —

285

285

740

1480

2220

3705

6000 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — 80 285

410

825

1235

2060

3430

510

1015

1525

2540

4230 — — — — — — — — — — — — — — — — — — — — —

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

285

285

285

285

600

600

740

285

285

285

285

600

600

740

285

285

600

600

740

275

275

275

275

600

600

720

275

275

275

275

600

600

720

275

275

275

275

600

600

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

D

Selection Table for Vapors, Gases and Liquids1900 & 1900-30 Series, D Orifice - API area: 0.110 Sq. in.



SET

PRES

SURE

- lb

s./S

q. in

.

Stainl

ess

Sprin

g

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

Selection Chart for Vapors, Gases and Liquids1900 & 1900-30 Series, D Orifice - API area: 0.110 Sq. in.

D

1920

Dt

1906

Dt

1922

Dt19

24Dt

1926

Dt19

28Dt

1905

D/L1

1906

D/L1

1905

D/L2

1906

D/L2

1905

D/L3

1906

D/L3

1910

D/L1

1912

D/L1

1914

D/L1

1918

D/L1

1916

D/L1

1910

D/L2

1912

D/L2

1914

D/L2

1918

D/L2

1916

D/L2

1916

D/L3

1910

Dt19

12Dt

1916

Dt19

14Dt

1918

Dt

1905

Dt

1906

Dc

1905

Dc19

10Dc

1912

Dc19

14Dc

1916

Dc19

18Dc

1910

D/L3

1912

D/L3

1914

D/L3

1918

D/L3

INLET TEMPERATURE °F


1900 (SRV-1/Q2.02)1900.59

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, E Orifice - API Area: 0.196 Sq. in.

E

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Ec19

06Ec

1910

Ec19

12Ec

1914

Ec19

16Ec

1918

Ec19

05Et

1906

Et19

10Et

1912

Et19

14Et

1916

Et19

18Et

1920

Et19

22Et

1924

Et19

26Et

1928

Et19

05E/

L119

06E/

L119

10E/

L119

12E/

L119

14E/

L119

16E/

L119

18E/

L119

05E/

L219

06E/

L219

10E/

L219

12E/

L219

14E/

L219

16E/

L219

18E/

L219

05E/

L319

06E/

L319

10E/

L319

12E/

L319

14E/

L319

16E/

L319

18E/

L3

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

4000

— — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

6000 — — — — — — — — — — — — — —

185

285

615

1235

1845

3080

5135

185

285

615

1235

1845

3080

5135 — — — — — — — — — — — — — — — — — — — — — — — — — —

+800

+100

0St

anda

rdBe

llow

s

— — — — — — — — — — — — — — 225

445

670

1115

1860 — — — — — — — — — — — — — — — — — — — — —

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

1905

-30Ec

1906

-30Ec

1910

-30Ec

1912

-30Ec

1914

-30Ec

1916

-30Ec

1918

-30Ec

1905

-30Et

1906

-30Et

1910

-30Et

1912

-30Et

1914

-30Et

1916

-30Et

1918

-30Et

1920

-30Et

1922

-30Et

1924

-30Et

1926

-30Et

1928

-30Et

1905

-30E/

L119

06-30

E/L1

1910

-30E/

L119

12-30

E/L1

1914

-30E/

L119

16-30

E/L1

1918

-30E/

L119

05-30

E/L2

1906

-30E/

L219

10-30

E/L2

1912

-30E/

L219

14-30

E/L2

1916

-30E/

L219

18-30

E/L2

1905

-30E/

L319

06-30

E/L3

1910

-30E/

L319

12-30

E/L3

1914

-30E/

L319

16-30

E/L3

1918

-30E/

L3

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

— — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

4000 — — — — — — —

285

285

740

1480

2220

3705

6000 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — 80 285

410

825

1235

2060

3430

510

1015

1525

2540

4230 — — — — — — — — — — — — — — — — — — — — —

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

285

285

285

285

600

600

740

285

285

285

285

600

600

740

285

285

600

600

740

275

275

275

275

600

600

720

275

275

275

275

600

600

720

275

275

275

275

600

600

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, E Orifice - API Area: 0.196 Sq. in.

E

Alloy Steel

Sprin

gs

1922

Et19

24Et

1926

Et19

28Et

1906

Et

1905

Et

1910

Et19

12Et

1914

Et19

16Et

1918

Et

1906

Ec

1905

Ec19

10Ec

1912

Ec19

14Ec

1916

Ec19

18Ec

1910

E/L2

1912

E/L1

1912

E/L2

1914

E/L1

1914

E/L2

1918

E/L1

1918

E/L2

1916

E/L1

1916

E/L2

1916

E/L3

1905

E/L2

1906

E/L2

1905

E/L3

1906

E/L3

1910

E/L3

1912

E/L3

1918

E/L3

1914

E/L3

1920

Et

1905

E/L1

1906

E/L1

1910

E/L1

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.61

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, F Orifice - API Area: 0.307 Sq. in.

F

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Ec19

06Fc

1910

Fc19

12Fc

1914

Fc19

16Fc

1918

Fc19

05Ft

1906

Ft19

10Ft

1912

Ft19

14Ft

1916

Ft19

18Ft

1920

Ft19

22Ft

1924

Ft19

26Ft

1928

Ft19

05F/

L119

06F/

L119

10F/

L119

12F/

L119

14F/

L119

16F/

L119

18F/

L119

05F/

L219

06F/

L219

10F/

L219

12F/

L219

14F/

L219

16F/

L219

18F/

L219

05F/

L319

06F/

L319

10F/

L319

12F/

L319

14F/

L319

16F/

L319

18F/

L3

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

2200

3400

— — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

5000 — — — — — — — — — — — — — —

185

285

615

1235

1845

3080

5000

185

285

615

1235

1845

3080

5135 — — — — — — — — — — — — — — — — — — — — — — — — — —

+800

+100

0St

anda

rdBe

llow

s

— — — — — — — — — — — — — — 225

445

670

1115

1860 — — — — — — — — — — — — — — — — — — — — —

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

1905

-30Fc

1906

-30Fc

1910

-30Fc

1912

-30Fc

1914

-30Fc

1916

-30Fc

1918

-30Fc

1905

-30Ft

1906

-30Ft

1910

-30Ft

1912

-30Ft

1914

-30Ft

1916

-30Ft

1918

-30Ft

1920

-30Ft

1922

-30Ft

1924

-30Ft

1926

-30Ft

1928

-3Ft

1905

-30F/

L119

06-30

F/L1

1910

-30F/

L119

12-30

F/L1

1914

-30F/

L119

16-30

F/L1

1918

-30F/

L119

05-30

F/L2

1906

-30F/

L219

10-30

F/L2

1912

-30F/

L219

14-30

F/L2

1916

-30F/

L219

18-30

F/L2

1905

-30F/

L319

06-30

F/L3

1910

-30F/

L319

12-30

F/L3

1914

-30F/

L319

16-30

F/L3

1918

-30F/

L3

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

— — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

2200

3400 — — — — — — —

285

285

740

1480

2220

3705

5000 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — 80 285

410

825

1235

2060

3430

510

1015

1525

2540

4230 — — — — — — — — — — — — — — — — — — — — —

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

285

285

285

285

740

740

740

285

285

285

285

740

740

740

285

285

740

740

740

275

275

275

275

720

720

720

275

275

275

275

720

720

720

275

275

275

275

720

720

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, F Orifice - API Area: 0.307 Sq. in. (198 Sq. mm

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

F

Alloy Steel

Sprin

gs

1920

Ft19

22Ft

1924

Ft19

26Ft

1928

Ft

1906

Ft

1905

Ft

1910

Ft19

12Ft

1914

Ft19

16Ft

1918

Ft

1906

Fc

1905

Fc19

10Fc

1912

Fc19

14Fc

1916

Fc19

18Fc

1905

F/L1

1906

F/L1

1905

F/L2

1906

F/L2

1905

F/L3

1906

F/L3

1910

F/L1

1910

F/L2

1910

F/L3

1912

F/L3

1914

F/L3

1912

F/L1

1912

F/L2

1914

F/L1

1914

F/L2

1918

F/L2

1916

F/L1

1916

F/L2

1916

F/L3

1918

F/L3

1918

F/L1

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.63

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, G Orifice - API Area: 0.503 Sq. in.

G

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Gc19

06Gc

1910

Gc19

12Gc

1914

Gc19

16Gc

1918

Gc19

05Gt

1906

Gt19

10Gt

1912

Gt19

14Gt

1916

Gt19

18Gt

1920

Gt19

22Gt

1924

Gt19

26Gt

1928

Gt19

05G/

L119

06G/

L119

10G/

L119

12G/

L119

14G/

L119

16G/

L119

18G/

L119

05G/

L219

06G/

L219

10G/

L219

12G/

L219

14G/

L219

16G/

L219

18G/

L219

05G/

L319

06G/

L319

10G/

L319

12G/

L319

14G/

L319

16G/

L319

18G/

L3

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

1600

2450

2600

— — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

3600 — — — — — — — — — — — — — —

185

285

615

1235

1845

3080

3705

185

285

615

1235

1845

3080

3705 — — — — — — — — — — — — — — — — — — — — — — — — — —

+800

+100

0St

anda

rdBe

llow

s

— — — — — — — — — — — — — — 225

445

670

1115

1860 — — — — — — — — — — — — — — — — — — — — —

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

1905

-30Gc

1906

-30Gc

1910

-30Gc

1912

-30Gc

1914

-30Gc

1916

-30Gc

1918

-30Gc

1905

-30Gt

1906

-30Gt

1910

-30Gt

1912

-30Gt

1914

-30Gt

1916

-30Gt

1918

-30Gt

1920

-30Gt

1922

-30Gt

1924

-30Gt

1926

-30Gt

1928

-30Gt

1905

-30G/

L119

06-30

G/L1

1910

-30G/

L119

12-30

G/L1

1914

-30G/

L119

16-30

G/L1

1918

-30G/

L119

05-30

G/L2

1906

-30G/

L219

10-30

G/L2

1912

-30G/

L219

14-30

G/L2

1916

-30G/

L219

18-30

G/L2

1905

-30G/

L319

06-30

G/L3

1910

-30G/

L319

12-30

G/L3

1914

-30G/

L319

16-30

G/L3

1918

-30G/

L3

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

— — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

1600

2450

2600 — — — — — — —

285

285

740

1480

2220

3705

3705 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — 80 285

410

825

1235

2060

3430

510

1015

1525

2540

3705 — — — — — — — — — — — — — — — — — — — — —

230

230

230

230

470

470

470

230

230

230

230

470

470

470

230

230

470

470

470

230

230

230

230

470

470

470

230

230

230

230

470

470

470

230

230

230

230

470

470

470

285

285

285

285

740

740

740

285

285

285

285

740

740

740

285

285

740

740

740

275

275

275

275

720

720

720

275

275

275

275

720

720

720

275

275

275

275

720

720

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, G Orifice - API Area: 0.503 Sq. in.

G

Alloy Steel

Sprin

gs

1920

Gt19

22Gt

1924

Gt19

26Gt

1928

Gt

1905

G/L2

1906

G/L2

1905

G/L3

1906

G/L3

1910

G/L2

1912

G/L1

1914

G/L1

1916

G/L1

1918

G/L1

1912

G/L2

1905

Gt

1906

Gt

1910

Gt19

12Gt

1914

Gt19

16Gt

1918

Gt

1910

Gc19

12Gc

1914

Gc19

16Gc

1906

Gc19

18Gc

1916

G/L2

1910

G/L3

1912

G/L3

1916

G/L3

1918

G/L3

1905

G/L1

1906

G/L1

1905

Gc

1910

G/L1

1914

G/L3

1914

G/L2

SET

PRES

SURE

- lb

s./S

q. in

.


1918

G/L2


1900 (SRV-1/Q2.02)1900.65

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, H Orifice - API Area: 0.785 Sq. in.

H

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Hc19

06Hc

1910

Hc19

12Hc

1914

Hc19

16Hc

1905

Ht19

06Ht

1910

Ht19

12Ht

1914

Ht19

16Ht

1920

Ht19

22Ht

1924

Ht19

26Ht

1905

H/L1

1906

H/L1

1910

H/L1

1912

H/L1

1914

H/L1

1916

H/L1

1905

H/L2

1906

H/L2

1910

H/L2

1912

H/L2

1914

H/L2

1916

H/L2

1905

H/L3

1906

H/L3

1910

H/L3

1912

H/L3

1914

H/L3

1916

H/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

150

300

300

600

900

1500

150

300

300

600

900

1500

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

1905

-30Hc

19

06-30

Hc19

10-30

Hc19

12-30

Hc19

14-30

Hc19

16-30

Hc19

05-30

Ht19

06-30

Ht19

10-30

Ht19

12-30

Ht19

14-30

Ht19

16-30

Ht19

20-30

Ht19

22-30

Ht19

24-30

Ht19

26-30

Ht19

05-30

H/L1

1906

-30H/

L119

10-30

H/L1

1912

-30H/

L119

14-30

H/L1

1916

-30H/

L119

05-30

H/L2

1906

-30H/

L219

10-30

H/L2

1912

-30H/

L219

14-30

H/L2

1916

-30H/

L219

05-30

H/L3

1906

-30H/

L319

10-30

H/L3

1912

-30H/

L319

14-30

H/L3

1916

-30H/

L3

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

— — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

1485

1600 — — — — — —

285

285

740

1480

2220

2750 — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — 80 285

410

825

1235

2060

510

1015

1225

2040 — — — — — — — — — — — — — — — — — —

285

285

285

285

285

740

285

285

285

285

285

740

285

285

285

740

275

275

275

275

275

720

275

275

275

275

275

720

275

275

275

275

275

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1235

1845

2750

185

285

615

1235

1845

2750 — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — 225

445

670

1115 — — — — — — — — — — — — — — — — — —

230

230

230

230

230

415

230

230

230

230

230

415

230

230

230

415

230

230

230

230

230

415

230

230

230

230

230

415

230

230

230

230

230

415

— — — — — — 275

275

720

1440

1485

1600 — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — — — — — 275

275

720

1440

2160

2750 — — — — — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0024

0028

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, H Orifice - API Area: 0.785 Sq. in.

H

Alloy Steel

Sprin

gs

1905

H/L2

1906

H/L2

1905

H/L3

1906

H/L3

1920

Ht19

22Ht

1924

Ht19

26Ht

1910

H/L2

1912

H/L1

1912

H/L2

1914

H/L1

1916

H/L1

1916

H/L2

1905

Ht

1906

Ht

1910

Ht19

12Ht

1914

Ht19

16Ht

1912

Hc19

14Hc

1916

Hc

1906

Hc

1914

H/L2

1910

H/L3

1912

H/L3

1916

H/L3

1910

Hc

1905

H/L1

1906

H/L1

1905

Hc

1910

H/L1

1914

H/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.67

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, J Orifice - API Area: 1.287 Sq. in.

J

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Jc19

06Jc

1910

Jc19

12Jc

1914

Jc19

16Jc

1905

Jt19

06Jt

1910

Jt19

12Jt

1914

Jt19

16Jt

1920

Jt19

22Jt

1924

Jt19

26Jt

1905

J/L1

1906

J/L1

1910

J/L1

1912

J/L1

1914

J/L1

1916

J/L1

1905

J/L2

1906

J/L2

1910

J/L2

1912

J/L2

1914

J/L2

1916

J/L2

1905

J/L3

1906

J/L3

1910

J/L3

1912

J/L3

1914

J/L3

1916

J/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

150

300

300

600

900

1500

150

300

300

600

900

1500

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

1905

-30Jc

1906

-30Jc

1910

-30Jc

1912

-30Jc

1914

-30Jc

1916

-30Jc

1905

-30Jt

1906

-30Jt

1910

-30Jt

1912

-30Jt

1914

-30Jt

1916

-30Jt

1920

-30Jt

1922

-30Jt

1924

-30Jt

1926

-30Jt

1905

-30J/

L119

06-30

J/L1

1910

-30J/

L119

12-30

J/L1

1914

-30J/

L119

16-30

J/L1

1905

-30J/

L219

06-30

J/L2

1910

-30J/

L219

12-30

J/L2

1914

-30J/

L219

16-30

J/L2

1905

-30J/

L319

06-30

J/L3

1910

-30J/

L319

12-30

J/L3

1914

-30J/

L319

16-30

J/L3

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

— — — — — — — — — — — — — — — — — —— — — — — 275

275

500

625

800

800

— — — — — —

285

285

740

1480

2220

2700 — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — 80 285

410

825

1235

2060

510

815

1225

2040 — — — — — — — — — — — — — — — — — —

285

285

285

285

285

600

285

285

285

285

285

600

285

285

285

600

275

275

275

275

275

600

275

275

275

275

275

600

275

275

275

275

275

600

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1235

1845

2700

185

285

615

1235

1845

2700 — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — 225

445

670

1115 — — — — — — — — — — — — — — — — — —

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

— — — — — — — — — — — — — — — — — — — — — — — —— — — — — 275

275

500

625

800

800

— — — — — — — — — — — — — — — — 275

275

720

1440

2160

2700 — — — — — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0024

0028

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, J Orifice - API Area: 1.287 Sq. in.

J

Alloy Steel

Sprin

gs

1905

J/L2

1906

J/L2

1905

J/L3

1906

J/L3

1922

Jt19

24Jt

1926

Jt

1912

J/L1

1914

J/L1

1910

Jt19

12Jt

1914

Jt19

16Jt

1905

Jc19

10Jc

1912

Jc19

14Jc

1916

Jc

1906

Jc

1916

J/L1

1910

J/L2

1910

J/L3

1914

J/L3

1916

J/L3

1914

J/L2

1916

J/L2

1912

J/L2

1920

Jt

1906

Jt

1905

Jt 1905

J/L1

1906

J/L1

1910

J/L1

1912

J/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.69

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, K Orifice - API Area: 1.838 Sq. in.

K

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Kc19

06Kc

1910

Kc19

12Kc

1914

Kc19

16Kc

1905

Kt19

06Kt

1910

Kt19

12Kt

1914

Kt19

16Kt

1920

Kt19

22Kt

1924

Kt19

26Kt

1905

K/L1

1906

K/L1

1910

K/L1

1912

K/L1

1914

K/L1

1916

K/L1

1905

K/L2

1906

K/L2

1910

K/L2

1912

K/L2

1914

K/L2

1916

K/L2

1905

K/L3

1906

K/L3

1910

K/L3

1912

K/L3

1914

K/L3

1916

K/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

150

300

300

600

900

1500

150

300

300

600

900

1500

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

1905

-30Kc

1906

-30Kc

1910

-30Kc

1912

-30Kc

1914

-30Kc

1916

-30Kc

1905

-30Kt

1906

-30Kt

1910

-30Kt

1912

-30Kt

1914

-30Kt

1916

-30Kt

1920

-30Kt

1922

-30Kt

1924

-30Kt

1926

-30Kt

1905

-30K/

L119

06-30

K/L1

1910

-30K/

L119

12-30

K/L1

1914

-30K/

L119

16-30

K/L1

1905

-30K/

L219

06-30

K/L2

1910

-30K/

L219

12-30

K/L2

1914

-30K/

L219

16-30

K/L2

1905

-30K/

L319

06-30

K/L3

1910

-30K/

L319

12-30

K/L3

1914

-30K/

L319

16-30

K/L3

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

— — — — — — — — — — — — — — — — — — — — — — 275

275

525

600

600

750

— — — — — —

285

285

740

1480

2220

2220 — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — 80 285

410

825

1235

2060

510

815

1225

2040 — — — — — — — — — — — — — — — — — —

285

285

285

285

285

600

285

285

285

285

285

600

285

285

285

600

275

275

275

275

275

600

275

275

275

275

275

600

275

275

275

275

275

600

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1235

1845

2220

185

285

615

1235

1845

2220 — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — 225

445

670

1115 — — — — — — — — — — — — — — — — — —

150

150

150

200

200

200

150

150

150

200

200

200

150

200

200

200

150

150

150

200

200

200

150

150

150

200

200

200

150

150

150

200

200

200

— — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

525

600

600

750

— — — — — — — — — — — — — — — — 275

275

720

1440

2160

2220 — — — — — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0022

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, K Orifice - API Area: 1.838 Sq. in.

K

Alloy Steel

Sprin

gs

1922

Kt19

24Kt

1926

Kt

1906

Kt

1905

Kt

1910

Kt19

12Kt

1914

Kt19

16Kt

1906

Kc

1905

Kc19

10Kc

1912

Kc19

14Kc

1916

Kc

1905

K/L1

1906

K/L1

1905

K/L2

1906

K/L2

1905

K/L3

1906

K/L3

1912

K/L2

1914

K/L2

1910

K/L1

1912

K/L1

1914

K/L1

1916

K/L1

1910

K/L2

1910

K/L3

1912

K/L3

1914

K/L3

1916

K/L2

1916

K/L3

1920

Kt

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.71

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, L Orifice - API Area: 2.853 Sq. in.

L

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Lc19

06Lc

1910

Lc19

12Lc

1914

Lc19

05Lt

1906

Lt19

10Lt

1912

Lt19

14Lt

1916

Lt19

20Lt

1922

Lt19

24Lt

1926

Lt19

05L/

L119

06L/

L119

10L/

L119

12L/

L119

14L/

L119

05L/

L219

06L/

L219

10L/

L219

12L/

L219

14L/

L219

05L/

L319

06L/

L319

10L/

L319

12L/

L319

14L/

L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

150

300

300

600

900

150

300

300

600

900

1500

300

600

900

1500

150

300

300

600

900

150

300

300

600

900

150

300

300

600

900

1905

-30Lc

1906

-30Lc

1910

-30Lc

1912

-30Lc

1914

-30Lc

1905

-30Lt

1906

-30Lt

1910

-30Lt

1912

-30Lt

1914

-30Lt

1916

-30Lt

1920

-30Lt

1922

-30Lt

1924

-30Lt

1926

-30Lt

1905

-30L/

L119

06-30

L/L1

1910

-30L/

L119

12-30

L/L1

1914

-30L/

L119

05-30

L/L2

1906

-30L/

L219

10-30

L/L2

1912

-30L/

L219

14-30

L/L2

1905

-30L/

L319

06-30

L/L3

1910

-30L/

L319

12-30

L/L3

1914

-30L/

L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — — — — — — — 275

275

535

535

700

— — — — —

285

285

740

1000

1500 — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — 80 285

410

825

1235

1500

510

1000

1500

1500 — — — — — — — — — — — — — — —

285

285

285

285

285

285

285

285

285

285

285

285

285

285

285

275

275

275

275

275

275

275

275

275

275

275

275

275

275

275

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1000

1500

185

285

615

1000

1500

1500 — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — 225

445

670

1115 — — — — — — — — — — — — — — —

100

100

170

170

170

100

100

170

170

170

170

170

170

170

170

100

100

170

170

170

100

100

170

170

170

100

100

170

170

170

— — — — — — — — — — — — — — — — — — — — — — — — — 275

275

535

535

700

— — — — — — — — — — — — — — — 275

275

720

1000

1500 — — — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, L Orifice - API Area: 2.853 Sq. in.

L

Alloy Steel

Sprin

gs

1920

Lt19

22Lt

1924

Lt19

26Lt

1906

Lt

1905

Lt

1910

Lt19

12Lt

1914

Lt

1916

Lt

1905

Lc19

10Lc

1912

Lc19

14Lc

1906

Lc

1910

L/L1

1912

L/L1

1914

L/L2

1914

L/L1

1905

L/L1

1906

L/L1

1905

L/L2

1906

L/L2

1905

L/L3

1906

L/L3

1910

L/L3

1912

L/L3

1910

L/L2

1912

L/L2

1914

L/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.73

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, M Orifice - API Area: 3.60 Sq. in.

M

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Mc19

06Mc

1910

Mc19

12Mc

1905

Mt19

06Mt

1910

Mt19

12Mt

1914

Mt19

20Mt

1922

Mt19

24Mt

1905

M/L1

1906

M/L1

1910

M/L1

1912

M/L1

1905

M/L2

1906

M/L2

1910

M/L2

1912

M/L2

1905

M/L3

1906

M/L3

1910

M/L3

1912

M/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

150

300

300

600

150

300

300

600

900

300

600

900

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Mc

1906

-30Mc

1910

-30Mc

1912

-30Mc

1905

-30Mt

1906

-30Mt

1910

-30Mt

1912

-30Mt

1914

-30Mt

1920

-30Mt

1922

-30Mt

1924

-30Mt

1905

-30M/

L119

06-30

M/L1

1910

-30M/

L119

12-30

M/L1

1905

-30M/

L219

06-30

M/L2

1910

-30M/

L219

12-30

M/L2

1905

-30M/

L319

06-30

M/L3

1910

-30M/

L319

12-30

M/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — — — 275

275

525

600

— — — —

285

285

740

1100 — — — — — — — — — — — — — — — — — — — —

— — — — 80 285

410

825

1100

510

1015

1100 — — — — — — — — — — — —

285

285

285

285

285

285

285

285

285

285

285

285

275

275

275

275

275

275

275

275

275

275

275

275

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1100

185

285

615

1100

1100 — — — — — — — — — — — — — — —

— — — — — — — — — 225

445

670

— — — — — — — — — — — —

80 80 160

160

80 80 160

160

160

160

160

160

80 80 160

160

80 80 160

160

80 80 160

160

— — — — — — — — — — — — — — — — — — — — 275

275

525

600

— — — — — — — — — — — — 275

275

720

1000 — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, M Orifice - API Area: 3.60 Sq. in.

M

Alloy Steel

Sprin

gs

1920

Mt

1922

Mt

1924

Mt

1906

Mt

1905

Mt

1910

M/L

119

12M

/L1

1910

M/L

219

12M

/L2

1910

M/L

319

12M

/L3

1905

M/L

119

06M

/L1

1905

M/L

219

06M

/L2

1905

M/L

319

06M

/L3

1910

Mt

1912

Mt

1914

Mt

1905

Mc

1910

Mc

1912

Mc

1906

Mc

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.75

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, N Orifice - API Area: 4.34 Sq. in.

N

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Nc19

06Nc

1910

Nc19

12Nc

1905

Nt19

06Nt

1910

Nt19

12Nt

1914

Nt19

20Nt

1922

Nt19

24Nt

1905

N/L1

1906

N/L1

1910

N/L1

1912

N/L1

1905

N/L2

1906

N/L2

1910

N/L2

1912

N/L2

1905

N/L3

1906

N/L3

1910

N/L3

1912

N/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

150

300

300

600

150

300

300

600

900

300

600

900

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Nc

1906

-30Nc

1910

-30Nc

1912

-30Nc

1905

-30Nt

1906

-30Nt

1910

-30Nt

1912

-30Nt

1914

-30Nt

1920

-30Nt

1922

-30Nt

1924

-30Nt

1905

-30N/

L119

06-30

N/L1

1910

-30N/

L119

12-30

N/L1

1905

-30N/

L219

06-30

N/L2

1910

-30N/

L219

12-30

N/L2

1905

-30N/

L319

06-30

N/L3

1910

-30N/

L319

12-30

N/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — — — 275

275

450

500

— — — —

285

285

740

1000 — — — — — — — — — — — — — — — — — — — —

— — — — 80 285

410

825

1000

510

1000

1000 — — — — — — — — — — — —

285

285

285

285

285

285

285

285

285

285

285

285

275

275

285

285

275

275

285

285

275

275

275

275

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1100

185

285

615

1000

1000 — — — — — — — — — — — — — — —

— — — — — — — — — 225

445

670

— — — — — — — — — — — —

80 80 160

160

80 80 160

160

160

160

160

160

80 80 160

160

80 80 160

160

80 80 160

160

— — — — — — — — — — — — — — — — — — — — 275

275

450

600

— — — — — — — — — — — — 275

275

720

1000 — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, N Orifice - API Area: 4.34 Sq. in.

N

Alloy Steel

Sprin

gs

1920

Nt19

22Nt

1924

Nt

1906

Nt

1905

Nt

1910

N/L1

1912

N/L1

1910

N/L2

1912

N/L2

1910

N/L3

1912

N/L3

1905

N/L1

1906

N/L1

1905

N/L2

1906

N/L2

1905

N/L3

1906

N/L3

1910

Nt19

12Nt

1914

Nt

1905

Nc19

10Nc

1912

Nc

1906

Nc

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.77

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, P Orifice - API Area: 6.38 Sq. in.

P

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Pc19

06Pc

1910

Pc19

12Pc

1905

Pt19

06Pt

1910

Pt19

12Pt

1914

Pt19

20Pt

1922

Pt19

24Pt

1905

P/L1

1906

P/L1

1910

P/L1

1912

P/L1

1905

P/L2

1906

P/L2

1910

P/L2

1912

P/L2

1905

P/L3

1906

P/L3

1910

P/L3

1912

P/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

150

300

300

600

150

300

300

600

900

300

600

900

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Pc

1906

-30Pc

1910

-30Pc

1912

-30Pc

1905

-30Pt

1906

-30Pt

1910

-30Pt

1912

-30Pt

1914

-30Pt

1920

-30Pt

1922

-30Pt

1924

-30Pt

1905

-30P/

L119

06-30

P/L1

1910

-30P/

L119

12-30

P/L1

1905

-30P/

L219

06-30

P/L2

1910

-30P/

L219

12-30

P/L2

1905

-30P/

L319

06-30

P/L3

1910

-30P/

L319

12-30

P/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — — — 175

175

300

480

— — — —

285

285

525

1000 — — — — — — — — — — — — — — — — — — — —

— — — — 80 285

410

825

1000

510

1000

1000 — — — — — — — — — — — —

285

285

285

285

285

285

285

285

285

285

285

285

275

275

275

275

175

175

275

275

175

175

275

275

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

525

1100

185

285

525

1000

1000 — — — — — — — — — — — — — — —

— — — — — — — — — 225

445

670

— — — — — — — — — — — —

80 80 150

150

80 80 150

150

150

150

150

150

80 80 150

150

80 80 150

150

80 80 150

150

— — — — — — — — — — — — — — — — — — — — 175

175

300

480

— — — — — — — — — — — — 275

275

525

1000 — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, P Orifice - API Area: 6.38 Sq. in.

P

Alloy Steel

Sprin

gs

1920

Pt19

23Pt

1924

Pt

1906

Pt

1905

Pt

1910

P/L1

1912

P/L1

1912

P/L2

1910

P/L2

1912

P/L3

1910

P/L3

1905

P/L1

1906

P/L1

1905

P/L2

1906

P/L2

1905

P/L3

1906

P/L3

1910

Pt19

12Pt

1914

Pt

1905

Pc19

10Pc

1912

Pc

1906

Pc

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.79

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, Q Orifice - API Area: 11.05 Sq. in.

Q

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Qc19

06Qc

1910

Qc19

12Qc

1905

Qt19

06Qt

1910

Qt19

12Qt

1920

Qt19

22Qt

1905

Q/L1

1906

Q/L1

1910

Q/L1

1912

Q/L1

1905

Q/L2

1906

Q/L2

1910

Q/L2

1912

Q/L2

1905

Q/L3

1906

Q/L3

1910

Q/L3

1912

Q/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

150

300

300

600

150

300

300

600

300

600

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Qc

1906

-30Qc

1910

-30Qc

1912

-30Qc

1905

-30Qt

1906

-30Qt

1910

-30Qt

1912

-30Qt

1920

-30Qt

1922

-30Qt

1905

-30Q/

L119

06-30

Q/L1

1910

-30Q/

L119

12-30

Q/L1

1905

-30Q/

L219

06-30

Q/L2

1910

-30Q/

L219

12-30

Q/L2

1905

-30Q/

L319

06-30

Q/L3

1910

-30Q/

L319

12-30

Q/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — 165

165

250

300

— — — —

165

165

300

600

— — — — — — — — — — — — — — — — — —

— — — — 80 165

300

600

165

600

— — — — — — — — — — — —

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

-20 to 450

451 to 800

801 to

1000 -21 to -75 -76 to -150

-151 to -450

165

165

300

600

165

165

300

600

— — — — — — — — — — — — — —

— — — — — — — — 165

445

— — — — — — — — — — — —

70 70 115

115

70 70 115

115

115

115

70 70 115

115

70 70 115

115

70 70 115

115

— — — — — — — — — — — — — — — — — — 165

165

250

300

— — — — — — — — — — 165

165

300

600

— — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

010

020

030

040

050

060

0

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, Q Orifice - API Area: 11.05 Sq. in.

Q

Alloy Steel

Sprin

gs

1920

Qt19

22Qt

1906

Qt

1910

Q/L1

1912

Q/L1

1905

Qt19

06Qt

1910

Qt19

12Qt

1910

Qc19

12Qc

1905

Qc19

06Qc

1905

Q/L1

1906

Q/L1

1905

Q/L2

1906

Q/L2

1905

Q/L3

1906

Q/L3

1910

Q/L2

1910

Q/L3

1912

Q/L2

1912

Q/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.81

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, R Orifice - API Area: 16.0 Sq. in.

R

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Rc19

06Rc

1910

Rc19

12Rc

1905

Rt19

06Rt

1910

Rt19

12Rt

1920

Rt19

22Rt

1905

R/L1

1906

R/L1

1910

R/L1

1912

R/L1

1905

R/L2

1906

R/L2

1910

R/L2

1912

R/L2

1905

R/L3

1906

R/L3

1910

R/L3

1912

R/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

6 x 8

6 x 8

6 x 1

06

x 10

6 x 8

6 x 8

6 x 1

06

x 10

6 x 8

6 x 1

06

x 86

x 86

x 10

6 x 1

06

x 86

x 86

x 10

6 x 1

06

x 86

x 86

x 10

6 x 1

0

150

300

300

600

150

300

300

600

300

600

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Rc

1906

-30Rc

1910

-30Rc

1912

-30Rc

1905

-30Rt

1906

-30Rt

1910

-30Rt

1912

-30Rt

1920

-30Rt

1922

-30Rt

1905

-30R/

L119

06-30

R/L1

1910

-30R/

L119

12-30

R/L1

1905

-30R/

L219

06-30

R/L2

1910

-30R/

L219

12-30

R/L2

1905

-30R/

L319

06-30

R/L3

1910

-30R/

L319

12-30

R/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — 55 55 150

200

— — — —

100

100

230

300

— — — — — — — — — — — — — — — — — —

— — — — 80 100

230

300

100

300

— — — — — — — — — — — —

60 60 100

100

60 60 100

100

60 100

60 60 100

100

55 55 100

100

55 55 100

100

-20 to 450

451 to 800

801 to

1000 -21 to -75 -76 to -150

-151 to -450

100

100

230

300

100

100

230

300

— — — — — — — — — — — — — —

— — — — — — — — 100

300

— — — — — — — — — — — —

60 60 100

100

60 60 100

100

60 100

60 60 100

100

55 55 100

100

55 55 100

100

— — — — — — — — — — — — — — — — — — 55 55 150

200

— — — — — — — — — — 100

100

230

300

— — — — — — — —



Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, R Orifice - API Area: 16.0 Sq. in.

R

050

100

150

200

250

300

Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

1922

Rt

1906

Rt

1905

Rc19

06Rc

1905

R/L1

1906

R/L1

1910

Rt

1910

Rc

1910

R/L1

1912

R/L1

1912

Rt

1912

Rc

1905

R/L2

1906

R/L2

1905

R/L3

1906

R/L3

1910

R/L3

1912

R/L2

1912

R/L3

Alloy Steel

Sprin

gs

1920

Rt

1905

Rt19

06Rt

1910

R/L2

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.83

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, T Orifice - Area: 30.21 Sq. in.

T

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Tc19

06Tc

1910

Tc19

05Tt

1906

Tt19

10Tt

1920

Tt19

05T/

L119

06T/

L119

10T/

L119

05T/

L219

06T/

L219

10T/

L219

05T/

L319

06T/

L319

10T/

L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

150

300

300

150

300

300

300

150

300

300

150

300

300

150

300

300

1905

-30Tc

1906

-30Tc

1910

-30Tc

1905

-30Tt

1906

-30Tt

1910

-30Tt

1920

-30Tt

1905

-30T/

L119

06-30

T/L1

1910

-30T/

L119

05-30

T/L2

1906

-30T/

L219

10-30

T/L2

1905

-30T/

L319

06-30

T/L3

1910

-30T/

L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — 50 50 65 — — —

65 65 300

— — — — — — — — — — — — —

— — — 65 65 300

300

— — — — — — — — —

30 30 100

30 30 100

100

30 30 100

30 30 60 30 30 60

-20 to 450

451 to 800

801

to 10

00-21 to -75 -76 to -15

0-15

1 to -450

65 65 300

65 65 300

— — — — — — — — — —

— — — — — — 225

— — — — — — — — —

30 30 100

30 30 100

100

30 30 100

30 30 60 30 30 60

— — — — — — — — — — — — — 50 50 65

— — — — — — — 65 65 120

— — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

050

100

150

200

250

300

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, T Orifice - Area: 30.21 Sq. in.

T

Alloy Steel

Sprin

gs

1920

Tt

1905

Tt19

06Tt

1910

T/L1

1910

T/L2

1910

T/L3

1910

Tt

1905

Tc19

06Tc

1905

T/L1

1906

T/L1

1910

Tc

1905

T/L2

1906

T/L2

1905

T/L3

1906

T/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.85

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, V Orifice - Area: 50.26 Sq. in.

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, W Orifice - Area: 78.996 Sq. in.

V & W

Standard

Valve Type Number

BellowsInlet

R.F. or R.J.OutletR.F.

-20+100

+101+415

+416+1000

Back Press. Limits(psig) at 100°FValve Size

Inlet x Outlet

1905V1906V1910V1920V

Standard Bellows

ASME Flanged Ratings Inlet Pressure (psig) & Temperature Limits - °F

10 x 1410 x 1410 x 1410 x 14

150300300300

1905-30V1906-30V1910-30V1920-30V

150150150150

303010030

154154300—

154154300—

———154

303010030

Standard

Valve Type Number

BellowsInlet

R.F. or R.J.OutletR.F.

-20+100

+101+415

+416+1000

Back Press. Limits(psig) at 100°FValve Size

Inlet x Outlet

1905W1906W1910W1920W

Standard Bellows

ASME Flanged Ratings Inlet Pressure (psig) & Temperature Limits - °F

12 x 1612 x 1612 x 1612 x 16

150300300300

1905-30W1906-30W1910-30W1920-30W

150150150150

909018090

154154300—

154154300—

———154

909018090

1900Capacities (USCS)


1900 Flanged Valve Orifice Capacities for Air (USCS Units)ASME B & PVC, Section VIII

Capacities Based on Set Pressure plus 10%overpressure or 3 psig, whichever is greater.

Capacities in standard feet of air per minute @ 60°F.

Air

6575951171391611842062282502943383824264715155596036476917367808248689129561000104510891133135415751795201622372458267828993120334144455549665388611106813276

18321126732839045151357563669882194410671190131414371560168318061930205321762299242225462669279229153038316137774393500956256241687574738089870593211240015480185602471930878

—

46853968384099811551313147116281786210124162731304633613676399143074622493752525567588261976512682771437458777380889663112391281514390159661754119117206922226823843317213959947477

———

10971264160019692338270730763445381441834922566063987136787486129351100891082711565123031304113779145181525615994167321747018208189462263726328300193370937400410914478248472521635585474308

—————

2148247631333856457853016023674674698191963711082125271397215417168631830819753211982264424089255342697928424298703131532760342053565137096443225154858774660007322780453

——————————

3806438855526832811293931067311953132341451417075196362219624757273182987932439350003756140122426824524347804503655292555486580476060863168657297853391336104140116944129747

———————————

9544110041392317134203452355526766299773318836399428214924255664620866850774929813518777294194100616

——————————————————————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279

Orifice Designation

Set Press.(psig)

152030405060708090100120140160180200220240260280300320340360380400420440460480500600700800900100011001200130014001500200025003000400050006000

117134170209249288327367406445524603682760839918996107511541232131113901468154716261704178318621940201924132806319935933986438047735166556059537920988711855157891972323657

30034643753863974084194210431144134615481750195221542356255827602962316433653567376939714173437545774779498151836193720282129222102311124112251132601427015280203282537730425

———

7678851119137816361894215224112669292734443960447749935510602365437059757680928609912596421015810675111911170812224127411325715840184222100526587261702875231334339173649939082519946490777819

———

1702196224833055362842004773534659186491763687819926110721221713362145071565216798179431908820233213782252423669248142595927104282502939535121404874657352299580256375169477752038092986655

——————

258929853778464955206391726381349005987611619133611510416846185892033122074238162555927301390443078632529342713601437756394994124142984447265343962151708637957688288

———————————

6594760296191183714055162731849220710229282514629583340193845642892473295176556202606386507569511739487838482821872579169496130100567105003109440113876136059

———————————————

15502178732261427829330443825943474486895390459119695497997990409100839111270121700132130142560152990163420

——————————————————————————

V50.26

W78.996

25792297353762346229549756365172327810048968098356115708133061150413167766185118202470219823237175254528271880

——————————————————————————

4053846737591347277086407100044113681127318140954154591181865209138236412263685290959318233345506372780400053427327

——————————————————————————

NOTE: 1 Relieving capacities indicated are 90% of average capacity in accordance with the latest ASME Code requirements.For temperatures other than 60° F and specific gravities other than air use formula sizing method.

SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or APIapplications.


1900 (SRV-1/Q2.02)1900.87

1900 and 1900TD Flanged Valve Orifice Capacities for Steam (USCS Units)

ASME B & PVC, Section VIII

Capacities Based on Set Pressure plus 10%overpressure or 3 psig, whichever is greater.Capacities in lbs. per hour of saturated steam

Steam

18421226833039245451657864070282695010731197132114451569169318171941206521892312243625602684280829323056318037994419503856586277689775168136875588989420130241723521551

513592749922109512671440161317861959230426502996334136874032437847245069541557616106645267987143748978348180852688711060012328140561578417512192412096922697244252482226279363344808260121

131415151916235928013243368541274569501158956779766385489432103161120012084129681385214737156211650517389182731915720041209262181022694271153153535956403774479849218536395806062481634966722292943122995

—

307835494490552665617597863296681070311739138101588117952200232209524166262372830830379324503452136592386634073542806448774694849019510905316163517738728422894583104939115295125650136006146361148740157468217720

——

60276948879210819124871487416902189292095722984270393109435149392044325947314513705542559480635356759071645757007975583810878659192095975100030104085124360144365164911185186205461225736246011

———————

106791231215578191702276326355299483354037133407254791055095622806946576650838359102098205105390112575119760126945134130141315148500155685162869170054177239184424220349256274292199328124364048

—————————

267813087639066480755708466093751028411193120102129120147138166156184174202192220210238228256246274264292282310

————————————————————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279

Orifice Designation

Set Press.(psig)

1520304050607080901001201401601802002202402602803003203403603804004204404604805006007008009001000110012001300140014231500200025002903

328378478589699809920103011401251147216921913213423552575279630173238345936793900412143424562478350045225544656666770787489781008211186122891339314497156011585516785232073071138401

84297012281511179520782361264529283211377843444911547860446611717777448311887794441001010577111441171012277128431341013977145431737620209230422587528708315413437437207400404069143079595627882198557

21542483314238664591531560406765748982149663111121256114011154601690918358198072125722706241552560427053285032995231401328503429935749371984444451690589366618273428806748792095166102412104076110183152343201601

—

4776550669668573101801178613393149991660618213214262463927852310663427937492407054391847132503455355856771599856319866411696247283876051792648247798543114609130676146742162808178874194940211006227072230764244304

———

7266837810600130451548917934203782282325267277123260137490423794726852157570466193666825717147660381492863819127096159101048105938110827115716120605125494149939174385198831223276247722

—————————

185022133126989332133943745661518855810964333705578300595453107901120349132797145245157693170141182589195037207485219933232381244829257277269725282173294621307069319517381757

—————————————

4349850149634517808492716107348121981136613151246165878195143224408253673282938312203341467370732399997429262458527

————————————————————————

V50.26

W78.996

7236783432105563129907154251178595202938227282251626275970342657373345422033470720519408568095616783665471714158762846

————————————————————————

113743131135165919204181242443280706318968357230395493433755510280586804663329739853816378892903969427104595211224761199001

————————————————————————

NOTE 1: Relieving capacities indicated are 90% of average capacity in accordance with the latest ASME Code requirements.Maximum permissible set pressure on steam is 2903 psig. 3000 psig capacities are included for interpolation purposes only.

NOTE 2: For Superheat Correction Factors refer to pages VS.18 and VS.19 in the Valve Sizing section of this catalog.SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or API

applications.



1900LA Flanged Valve Orifice Capacities for Water (USCS Units)


Capacities based on Set Pressure plus 10% overpressure or3 psig, whichever is greater, 0 psig back pressure. Capacities in gallons of

water per minute at 70°F, 90% of average capacity.

Water

131518212426283032343740434548505254575961626466686971737476839096102107113118122127132152170186215241264

38435260677379859095104112120127134141147153159164170175180185190194199204208212233251269285300315329343355368425475521601672—

98111133153172188203217230243266287307326344360377392407421435448461474486498510521533544596643688730769807842877910942108812161332———

230260312360403441476509540570624674721764806845883919953987101910511081111111401168119512221248127413961508161217101802189019742055213222072549—————

4515106117057898649339981058111612221320141114971578165517291799186719331996205821172175223222872341239324452495273329523156334835293701——————————

799904108312501398153116541768187619772166233925012653279629333063318833093425353736463752385539554052414842414332442248445232559359326253———————————

20062267271631363506384141494435470449595432586762736653701373557682799682988589——————————————————————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279

Orifice Designation

Set Press.(psig)

152030405060708090100120140160180200220240260280300320340360380400420440460480500600700800900100011001200130014001500200025003000400050006000

242733384247505457606671768185909497101105108112115118121124127130133135148160171182192201210219227235271303332384429470

63718598110120130139147155170184197209220231241251260270278287295304311319327334341348382412441467493517540562583603697779854986——

161182218252282308333356378398436471504535564591617643667690713735756777797817836855873891977105511281196126113221381143814921544178319942184———

35740448455962568573979183988496810461118118612501311137014261479153115821630167817241768181218551896193719772166233925012653279629333063318833093425——————

544615737851951104211251203127613451474159217021805190319952084216922512330240724812553262326912757282228862948300932963560380640374255———————————

1385156618762166242226532866306432503426375340534333459648455081530755245733593461286317650066786852702171867348750676618392906496901027810834

———————————

3258368344115094569562396739720476418054882395301018810806113911194712478129881347813951

——————————————————————————

V50.26

W78.996

54206127733984759475103801121111985127131340014679158551695017978189511987620760216082242323210

——————————————————————————

85209631115361332114893163141762218838199812106223072249212664228258297863124032629339623524436481

——————————————————————————

NOTE: 1 Relieving capacities indicated are 90% of average capacity in accordance with the latest ASME Code requirements.SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or API

applications.

1900/P (SRV-1/Q2.02)1900P.1

1900/P SeriesScope of Design

1900-30/P1 Series 1900/P3 Series

The 1900/P Series Safety Relief Valves are for the following applications only:

ASME B & PVC, Section I Steam and Flashing Water Applications and Organic Vapor ServiceThe P1 and P3 Series designs are not for ASME B & PVC, Section I Boiler Drum, Superheater or Reheater Applications.

1900/P1 SeriesConventional design - An exclusive with CONSOLIDATED valves, the Eductor Tube removes pressure from the bonnet when the valve is open. “D” through“T” orifice sizes. The D & E orifice are restricted lift.

1900-30/P1 SeriesBalanced bellows design - Sealing off the guiding area and upper valve parts protects the internal parts above the bellows from exposure to theprocess fluid. The balanced bellows also cancels out the effects of variable or constant back pressure at the outlet side. “D” through “T” orifice sizes. TheD & E orifice are restricted lift.

1900/P3 SeriesExposed spring design - The spring in this design is exposed for atmospheric cooling. “D” through “T” orifice sizes.

Standard in all three types, the Thermodisc™ Seat is designed for a high degree of seat tightness for steam service or organic fluid applications.

1900/P1 Series

Table of Contents

Scope of Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.1Materials

1900/P1 (Conventional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.31900/P1 (Balanced Bellows) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.51900/P3 (Conventional Exposed Spring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.7Cap Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.9

Dimensions & Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.10USCS Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.11Metric Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.18

Pressure/Temperature Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.25Steam Capacities (USCS) ASME Code Section I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900P.53(For organic fluid sizing, contact the factory.)

1900/P SeriesScope of Design

Consolidated Spring Loaded Safety Relief Valves 1900/P (SRV-1/Q2.02)

1900/P Series Overview

1900/P Inlet x Outlet Size (in.) & Flange Rating Combinations - Orifice Area (sq. in.)

ASMEAPI

ORIFICE1905

1906

1910

1912

1914

19161918

1920

1921

1922

1923

1924

1926

1928

3 - 150 x 4 - 150

3 - 300 x 4 - 150

3 - 300 x 4 - 150

3 - 600 x 4 - 150

3 - 900 x 6 - 150

3 - 1500 x 6 - 300

—

3 - 300 x 4 - 150

—

3 - 600 x 4 - 150

—

3 - 900 x 6 - 150

3 - 1500 x 6 - 300

—

2.1381.838

K

3 - 150 x 4 - 150

3 - 300 x 4 - 150

4 - 300 x 6 - 150

4 - 600 x 6 - 150

4 - 900 x 6 - 150

4 - 1500 x 6 - 150

—

4 - 300 x 6 - 150

—

4 - 600 x 6 - 150

—

4 - 900 x 6 - 150

4 - 1500 x 6 - 150

—

3.3172.853

L

4 - 150 x 6 - 150

4 - 300 x 6 - 150

4 - 300 x 6 - 150

4 - 600 x 6 - 150

4 - 900 x 6 - 150

—

—

4 - 300 x 6 - 150

—

4 - 600 x 6 - 150

—

4 - 900 x 6 - 150

—

—

4.1863.6M

4 - 150 x 6- 150

4 - 300 x 6 - 150

4 - 300 x 6 - 150

4 - 600 x 6 - 150

4 - 900 x 6 - 150

—

—

4 - 300 x 6 - 150

—

4 - 600 x 6 - 150

—

4 - 900 x 6 - 150

—

—

5.0474.34

N

4 - 150 x 6 - 150

4 - 300 x 6 - 150

4 - 300 x 6 - 150

4 - 600 x 6 - 150

4 - 900 x 6 - 150

—

—

4 - 300 x 6 - 150

—

—

4 - 600 x 6 - 150

4 - 900 x 6 - 150

—

—

7.4176.38

P

6 - 150 x 8 - 150

6 - 300 x 8 - 150

6 - 300 x 8 - 150

6 - 600 x 8 - 150

—

—

—

6 - 300 x 8 - 150

—

6 - 600 x 8 - 150

—

—

—

—

12.8511.05

Q

6 - 150 x 8 - 150

6 - 300 x 8 - 150

6 - 300 x 10 - 150

6 - 600 x 10 - 150

-—

—

—

6 - 300 x 8 - 150

—

6 - 600 x 10 - 150

—

—

—

—

18.616R

8 - 150 x 10 - 150

8 - 300 x 10 - 150

8 - 300 x 10 - 150

8 - 600 x 10 - 150

—

—

—

8 - 300 x 10 - 150

—

8 - 300 x 10 - 150

—

—

—

—

30.2126T

1900/P Inlet x Outlet Size (in.) & Flange Rating Combinations - Orifice Area (sq. in.)

ASMEAPI

ORIFICE

1 - 150 x 2 - 150

1 - 300 x 2 - 150

1 - 300 x 2 - 150

1 - 600 x 2 - 150

1-1/2 - 900 x 2 - 300

1-1/2 - 1500 x 2 - 300

1-1/2 - 2500 x 3 - 300

1 - 300 x 2 - 150

—

1 - 600 x 2 - 150

—

1-1/2 - 900 x 2 - 300

1-1/2 - 1500 x 2 - 300

1-1/2 - 2500 x 3 - 300

1905

1906

1910

1912

1914

1916

1918

1920

1921

1922

1923

1924

1926

1928

0.12790.11

D

1 - 150 x 2 - 150

1 - 300 x 2 - 150

1 - 300 x 2 - 150

1 - 600 x 2 - 150

1-1/2 - 900 x 2 - 300

1-1/2 - 1500 x 2 - 300

1-1/2 - 2500 x 3 - 300

1 - 300 x 2 - 150

—

1 - 600 x 2 - 150

—

1-1/2 - 900 x 2 - 300

1-1/2 - 1500 x 2 - 300

1-1/2 - 2500 x 3 - 300

0.22790.196

E

1-1/2 - 150 x 2 - 150

1-1/2 - 300 x 2 - 150

1-1/2 - 300 x 2 - 150

1-1/2 - 600 x 2 - 150

1-1/2 - 900 x 3 - 300

1-1/2 - 1500 x 3 - 300

1-1/2 - 2500 x 3 - 300

1-1/2 - 300 x 2 - 150

—

1-1/2 - 600 x 2 - 150

—

1-1/2 - 900 x 3 - 300

1-1/2 - 1500 x 3 - 300

1-1/2 - 2500 x 3 - 300

0.35680.307

F

0.58490.503

G

0.91270.7851

H

1.4961.287

J

1-1/2 - 150 x 3 - 150

1-1/2 - 300 x 3 - 150

2 - 300 x 3 - 150

2 - 600 x 3 - 150

2 - 900 x 3 - 150

2 - 1500 x 3 - 300

—

2 - 300 x 3 - 150

—

2 - 600 x 3 - 150

—

2 - 900 x 3 - 150

2 - 1500 x 3 - 300

—

2 - 150 x 3 - 150

2 - 300 x 3 - 150

3 - 300 x 4 - 150

3 - 600 x 4 - 150

3 - 900 x 4 - 150

3 - 1500 x 4 - 300

—

3 - 300 x 4 - 150

—

3 - 600 x 4 - 150

—

3 - 900 x 4 - 150

3 - 1500 x 4 - 300

—

1-1/2 - 150 x 3 - 150

1-1/2 - 300 x 3 - 150

1-1/2 - 300 x 3 - 150

1-1/2 - 600 x 3 - 150

1-1/2 - 900 x 3 - 300

2 - 1500 x 3 - 300

2 - 2500 x 3 - 300

1-1/2 - 300 x 3 - 150

—

1-1/2 - 600 x 3 - 150

—

1-1/2 - 900 x 3 - 300

2 - 1500 x 3 - 300

2 - 2500 x 3 - 300

NOTES: Inlet and outlet size combinations as well as Orifice sizes shown in the table above are compliant with API standard 526 - Fourth Edition, 1995.Inlet and outlet flange ratings per ANSI B16.5For inlet facing selections refer to General Information Section.

1900P.2

1900/P SeriesMaterials

1900/P (SRV-1/Q2.02)1900P.3

1900/P1 Conventional Safety Relief ValvesFor Steam and Organic Fluids

ASME B & PVC, Section I Organic Fluid, Steam & Flashing Water Applications

Steel, Flat Seat, High Capacity, Stainless Steel Trim

Standard Material for 1900/P1Conventional Safety Relief Valves

Part

Class Ratings150, 300, 600, 900, 1500, 2500 psig

Temperature Ratings1905-1918 – 0°F(17.8°C) to 800°F(426.7°C)

1920-1928 – 801°F(427.2°C) to 850°F(454.4°C)

Orifice SizesLettered “D” through “T”

Inlets-Outlets1" x 2" through 8" x 10" ANSI Flanged


2 Nozzle 316SS3 Adjusting Ring 316SS4 Adjusting Ring Pin 316SS5 Adjusting Ring Pin Gasket Soft Iron6 Disc 616SS7 Disc Holder 316SS8 Disc Holder Ring 410SS9 Holder Ring Retainer Electroless Nickel Plated Carbon Steel10 Guide Alloy C97800 Leaded Nickel Silver11 Guide Gasket Soft Iron12 Bonnet SA216 Grade WCC Carbon Steel13 Bonnet Gasket Soft Iron14 Base Stud B7 Alloy Steel15 Base Stud Nut 2H Carbon Steel16 Spindle 410SS17 Spring Washer Carbon Steel18 Spring: Types 1905 thru 1918 Alloy Steel

Spring: Types 1920 thru 1928 Inconel X750 or Tungsten Steel19 Adjusting Screw 416SS20 Adjusting Screw Nut 416SS22 Plain Cap Malleable Iron38 Eductor Tube 304SS39 Pipe Plug Carbon Steel40 Limit Washer (D & E orifice only) 31SS

Material

NOTE: (1900/P1 Series design is not for ASME B & PVC Section I Boiler Drum, Superheateror Reheater applications.)


1900/P1 Series

4

7

1110

13

8

3

1

2

6

12

19

22

17

17

9

39

18

16

20

38

15

5

Consolidated Spring Loaded Safety Relief Valves 1900/P (SRV-1/Q2.02)

14

For available cap options,see page 1900P.9

The D and E valves arerestricted lift versions of the “F”orifice valve. The lift is restrictedby a limit washer to provide theequivalent effective orifice areafor a “D” or “E” orifice. This

design is available with abalanced bellows configuration

and is designed for backpressure applications.

D & E Orifice onlyRestricted Lift

40

1900P.4


1900-30/P1 Balanced Bellows Safety Relief ValvesFor Steam and Organic Fluids

Standard Material for 1900-30/P1Bellows Safety Relief Valves

Part Material


Temperature Ratings1905-1918 – 0°F(17.8°C) to 800°F(426.7°C)

1920-1928 – 801°F(427.2°C) to 850°F(454.4°C)



1900/P (SRV-1/Q2.02)1900P.5

1 Base: Types 1905-30 thru 1918-30 SA216 Grade WCC Carbon SteelBase: Types 1920-30 thru 1928-30 SA217 Grade WC6 Alloy Steel

2 Nozzle 316SS3 Adjusting Ring 316SS4 Adjusting Ring Pin 316SS5 Adjusting Ring Pin Gasket Soft Iron6 Disc 616SS7 Disc Holder 316SS8 Disc Holder Ring 410SS9 Holder Ring Retainer Electroless Nickel Plated Carbon Steel10 Guide Alloy C97800 Leaded Nickel Silver11 Guide Gasket Soft Iron12 Bonnet SA216 Grade WCC Carbon Steel13 Bonnet Gasket Soft Iron14 Base Stud B7 Alloy Steel15 Base Stud Nut 2H Carbon Steel16 Spindle 410 Stainless Steel17 Spring Washer Carbon Steel18 Spring: Types 1905 thru 1918 Alloy Steel

Spring: Types 1920 thru 1928 Inconel X750 or Tungsten Steel19 Adjusting Screw 416SS20 Adjusting Screw Nut 416SS22 Plain Cap Malleable Iron38 Bellows Assembly —

Bellows Inconel 625Bellows Flange & Bellows Ring 316L SS

39 Bellows Gasket Soft Iron40 Seal Plate 304L SS41 Limit Washer (D & E orifice only) 316 SS

ASME B & PVC, Section I Organic Fluid, Steam & Flashing Water Applications

Steel, Flat Seat, High Capacity, Stainless Steel TrimWith Backpressure Compensating Bellows

NOTE: (1900-30/P1 Series design is not for ASME B & PVC Section I Boiler Drum, Superheateror Reheater applications.)


1900-30/P1 Series

4

38107

11

1514

398

3

5

17

18

16

13

17

20

9

40

vent - do not plug

Consolidated Spring Loaded Safety Relief Valves 1900/P (SRV-1/Q2.02)1900P.6


The D and E valves are restrictedlift versions of the “F” orifice

valve. The lift is restricted by alimit washer to provide the

equivalent effective orifice areafor a “D” or “E” orifice. Thisconfiguration is designed forback pressure applications.


41

22

1

2

6

12

19


1900/P3 Exposed Spring Safety Relief Valvesfor Steam Service

Standard Material for 1900/P3 Conventional Safety Relief Valves

Part


Temperature Ratings0°F(17.8°C) to 850°F(454.4°C)



1900/P (SRV-1/Q2.02)1900P.7


2 Nozzle 316SS3 Adjusting Ring 316SS4 Adjusting Ring Pin 316SS5 Adjusting Ring Pin Gasket Soft Iron6 Disc 616SS7 Disc Holder 316SS8 Disc Holder Ring 410SS9 Holder Ring Retainer Electroless Nickel Plated Carbon Steel10 Guide Alloy C97800 Leaded Nickel Silver11 Guide Gasket Soft Iron12 Bonnet/Slotted SA216 Grade WCC Carbon Steel14 Base Stud B7 Alloy Steel15 Base Stud Nut 2H Carbon Steel16 Spindle 410SS17 Spring Washer Carbon Steel18 Spring Alloy Steel19 Adjusting Screw 416SS20 Adjusting Screw Nut 416SS21 Plain Cap Malleable Iron22 Limit Washer (D & E orifice only) 316SS

Material

ASME B & PVC, Section I Steam Generator Applications

Steel, Flat Seat, High Capacity, Stainless Steel Trim

NOTE: (1900/P3 Series design is not for ASME B & PVC Section I Boiler Drum, Superheateror Reheater applications.)

1900/P3 Series

15

7

10

11

4

3

56

14

20

17

17

18

98

21

16



The D and E valves arerestricted lift versions of the “F”orifice valve. The lift is restrictedby a limit washer to provide theequivalent effective orifice area

for a “D” or “E” orifice.


22


1

2

12

19


Packed Lever - P1

2325

2726

283132

30

Pack

edPl

ain

Gag

Scre

wed

Bolte

d

Standard Material

Part Material

Materials

1900/P (SRV-1/Q2.02)1900P.9

21 Packed Cap Carbon Steel23 Cap Screw Carbon Steel25 Cap Gasket Soft Iron26 Release Nut Carbon Steel27 Release Locknut Carbon Steel28 Lever Malleable Iron29 Lifting Fork Malleable Iron30 Lever Shaft 410/416SS31 Packing Grafoil32 Packing Nut 410/416SS22 Plain Cap Malleable Iron24 Cap Set Screw Carbon Steel26 Release Nut Carbon Steel27 Release Locknut Carbon Steel33 Top Lever Malleable Iron34 Drop Lever Malleable Iron35 Bolted Cap Carbon Steel36 Cap Screw Carbon Steel37 Cap Gasket Soft Iron38 Gag Bolt Carbon Steel39 Sealing Plug Carbon Steel40 Plug Gasket Soft Iron41 Screwed Cap Carbon Steel42 Cap Gasket Soft Iron

3840

39

35

37

36

Safety Valve Valve Screwed Bolted Packed Plain Gag2

Application Type Cap1 Cap1 Lever Lever

Steam Service - 1900/P1 X X XEconomizer

Steam Service - 1900/P3 X XSteam Generator

Organic Fluid Vapor1 1900/P1 X X X

Cap Selection

NOTES: 1 ASME B & PVC, Section I (Part PVG-12) requires the safety valve to be a totally enclosed type that is designed sothat vapors escaping beyond the valve seat shall not discharge into atmosphere. Safety valves used to protect organicfluid vaporizers are not to be equipped with lifting levers.

2 All caps may be supplied with a gag.

Screwed CapOrganic Fluid Vaporizer Application

41

42

2129

Bolted CapOrganic Fluid Vaporizer Application

22

27 26

24

33

34

Plain Lever - P1 & P3

Cap with Gag

1900/P SeriesDimensions & Weights

This table applies to the standard 1900/P Series regardless of materials of construction. If the valve you are reviewing has an inlet or outlet size differentfrom that stated, the dimensions “A” through “S” and weight may not apply.

NOTE: USCS Units refers to “U.S. Customary System” Units, the adapted U.S. standard formerly recognized as “English” Units.

1900/P1 Series

C

A

S

B

1900/P Series

± 1/16± 1.6 mm

± 1/16± 1.6 mm

1900/P3 Series


CDD

A ± 1/16± 1.6 mm

S

B± 1/16± 1.6 mm


1900/P1 & P3 Series Valves – USCS Units

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

2 x 3

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

6 x 8

6 X 8

8 x 10

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

2 x 3

3 x 4

1905D / P11905D / P31905E / P11905E / P31905F / P11905F / P31905G / P11905G / P31905H / P11905H / P31905J / P11905J / P31905K / P11905K / P31905L / P11905L / P31905M / P11905M / P31905N / P11905N / P31905P / P11905P / P31905Q / P11905Q / P31905R / P11905R / P31905T / P11905T / P31906D / P11906D / P31906E / P11906E / P31906F / P11906F / P31906G / P11906G / P31906H / P11906H / P31906J / P11906J / P31906K / P11906K / P3

4-1/24-1/24-1/24-1/24-3/44-3/44-3/44-3/44-7/84-7/84-7/84-7/86-3/86-3/86-1/26-1/27-1/47-1/48-1/48-1/4

99

9-1/29-1/29-1/29-1/2

1111

4-1/24-1/24-1/24-1/24-3/44-3/44-3/44-3/44-7/84-7/84-7/84-7/86-3/86-3/8

17171717

17-3/417-3/417-3/417-3/419-1/219-1/221-1/421-1/424-1/224-1/228-3/428-3/429-3/429-3/4

3333

34-1/434-1/4

41414343

47-1/447-1/4

17171717

17-3/417-3/417-3/417-3/419-1/219-1/221-1/421-1/424-1/224-1/2

18—18—

18-3/4—19—

19-1/2—

21-1/4—

24-1/2—

28-3/4—

29-3/4—33—

34-1/4—41—43—

47-1/4—18—18—

18-3/4—19—

19-1/2—

21-1/4—

24-1/2—

5-7/165-7/165-7/165-7/165-7/165-7/165-7/165-7/166-5/166-5/166-7/86-7/87-1/47-1/48-7/88-7/89-3/89-3/810-1/810-1/8

1111

13-5/813-5/814-1/214-1/216-1/216-1/25-7/165-7/165-7/165-7/165-7/165-7/165-7/165-7/166-5/166-5/166-7/86-7/87-1/47-1/4

1-1/81-1/81-1/81-1/81-1/41-1/41-1/41-1/41-1/41-1/41-5/161-5/161-7/161-7/161-7/161-7/161-5/81-5/81-5/81-5/81-5/81-5/8

1-13/161-13/161-13/161-13/161-15/161-15/161-3/81-3/81-3/81-3/81-1/21-1/21-1/21-1/21-9/161-9/161-9/161-9/161-13/161-13/16

454545454545555560607575110110140140185185220220260260430430495495620620454545454545555560607575115115

1900 Steam Internal - Dimensions (in.) & Weights (lbs.) - USCS Units

Size Type A BC

STD BellowsD S Approx.

Weight

4-1/84-1/84-1/84-1/84-7/84-7/84-7/84-7/85-1/85-1/85-3/85-3/86-1/86-1/86-1/86-1/8

77

7-3/47-3/47-1/87-1/89-7/169-7/169-7/169-7/1610-7/810-7/84-1/84-1/84-1/84-1/84-7/84-7/84-7/84-7/85-1/85-1/85-3/85-3/86-1/86-1/8

1900/P (SRV-1/Q2.02)1900P.11



3 x 4

4 x 6

4 x 6

4 x 6

6 x 8

6 x 8

8 x 10

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6

6 x 8

6 x 10

8 x 10

1906L / P11906L / P31906M / P11906M / P31906N / P11906N / P31906P / P11906P / P31906Q / P11906Q / P31906R / P11906R / P31906T / P11906T / P31910D / P11910D / P31910E / P11910E / P31910F / P11910F / P31910G / P11910G / P31910H / P11910H / P31910J / P11910J / P31910K / P11910K / P31910L / P11910L / P31910M / P11910M / P31910N / P11910N / P31910P / P11910P / P31910Q / P11910Q / P31910R / P11910R / P31910T / P11910T / P3

6-1/26-1/27-1/47-1/48-1/48-1/4

99

9-1/29-1/29-1/29-1/2

1111

4-1/24-1/24-1/24-1/2

6666

4-7/84-7/87-1/87-1/86-3/86-3/87-1/87-1/87-1/47-1/48-1/48-1/4

1010

9-1/29-1/210-1/210-1/2

1111

28-3/428-3/429-3/429-3/4

3333

34-1/434-1/4

41414343

47-1/447-1/417-1/217-1/217-1/217-1/218-1/418-1/418-1/418-1/420-1/420-1/425-5/825-5/8

282832323232

34-1/434-1/4

41 41

43-1/443-1/445-1/245-1/253-3/853-3/8

28-3/4—

29-3/4—33—

34-1/4—41—43—

47-1/4—

18-1/2—

18-1/2—

19-1/4—

19-1/2—

20-1/4—

25-5/8—28—32—32—

34-1/4—41—

43-1/4—

45-1/2—

53-3/8—

8-7/88-7/89-3/89-3/810-1/810-1/8

1111

13-5/813-5/814-1/214-1/216-1/216-1/25-7/165-7/165-7/165-7/165-7/165-7/165-7/165-7/166-5/166-5/167-3/87-3/87-3/47-3/49-1/29-1/29-3/89-3/810-1/210-1/211-1/211-1/2

1414

14-1/214-1/216-1/216-1/2

1-13/161-13/161-15/161-15/161-15/161-15/161-15/161-15/162-1/42-1/42-1/42-1/42-7/162-7/161-3/81-3/81-3/81-3/81-9/161-9/161-9/161-9/161-11/161-11/161-15/161-15/161-15/161-15/161-15/161-15/161-15/161-15/161-15/161-15/161-15/161-15/162-1/42-1/42-1/42-1/42-7/162-7/16

14514519019022522527027044544551051064064050505050505060606565100100140140220220230230260260350350530530550550840840


Size Type A BC


Weight

6-1/86-1/8

77

7-3/47-3/47-1/87-1/89-7/169-7/169-7/169-7/1610-7/810-7/84-1/84-1/84-1/84-1/84-7/84-7/84-7/84-7/85-1/85-1/87-1/47-1/46-1/86-1/87-1/167-1/16

77

7-3/47-3/48-7/88-7/89-7/169-7/169-7/169-7/1610-7/810-7/8



1900/P (SRV-1/Q2.02)1900P.13


1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6

6 x 8

6 x 10

8 x 10

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

2 x 3

3 x 4

3 x 6

4 x 6

4 x 6

1912D / P11912D / P31912E / P11912E / P31912F / P11912F / P31912G / P11912G / P31912H / P11912H / P31912J / P11912J / P31912K / P11912K / P31912L / P11912L / P31912M / P11912M / P31912N / P11912N / P31912P / P11912P / P31912Q / P11912Q / P31912R / P11912R / P31912T / P11912T / P31914D / P11914D / P31914E / P11914E / P31914F / P11914F / P31914G / P11914G / P31914H / P11914H / P31914J / P11914J / P31914K / P11914K / P31914L / P11914L / P31914M / P11914M / P3

4-1/24-1/24-1/24-1/2

6666

6-3/86-3/87-1/87-1/87-1/87-1/8

8888

8-3/48-3/4

1010

9-1/29-1/210-1/210-1/2

1111

5-1/25-1/25-1/25-1/26-1/26-1/26-1/26-1/26-3/86-3/87-1/87-1/88-1/28-1/28-3/48-3/48-3/48-3/4

18-1/418-1/418-1/418-1/4

191919192323

29-7/829-7/829-1/429-1/4

3232

36-1/436-1/4

3939

43-1/243-1/2

4646

47-1/247-1/253-7/853-7/821-3/421-3/421-3/421-3/422-1/222-1/222-1/222-1/2

2626

29-3/429-3/435-1/435-1/437-1/437-1/4

3737

19-1/4—

19-1/4—20—

20-1/4—23—

29-7/8—

29-1/4— 32—

36-1/4—39—

43-1/2—46—

47-1/2—

53-7/8—

22-3/4—

22-3/4—

23-1/2—

23-3/4—26—

29-3/4—

35-1/4—

37-1/4—37—

6-5/166-5/166-5/166-5/166-5/166-5/166-5/166-5/16

7799

7-3/47-3/49-1/29-1/210-3/410-3/411-3/411-3/413-7/813-7/814-1/414-1/415-1/815-1/816-1/216-1/27-13/167-13/167-13/167-13/167-13/167-13/167-13/167-13/168-1/48-1/4

99

10-1/210-1/212-1/412-1/410-3/410-3/4

1-3/81-3/81-3/81-3/81-9/161-9/161-9/161-9/161-11/161-11/161-13/161-13/161-15/161-15/162-3/162-3/162-3/162-3/162-3/162-3/162-3/162-3/162-11/162-11/162-11/162-11/162-7/162-7/161-15/161-15/161-15/161-15/161-15/161-15/161-15/161-15/162-3/162-3/162-3/162-3/162-3/162-3/162-7/162-7/162-7/162-7/16

55555555606065658585170170150150230230300300360360530530645645675675840840959595951001009595130130195195300300360360340340


Size Type A BC


Weight

4-1/84-1/84-1/84-1/84-7/84-7/84-7/84-7/86-1/166-1/167-1/47-1/47-1/47-1/47-1/167-1/16

77

7-3/47-3/48-7/88-7/89-7/169-7/169-7/169-7/1610-7/810-7/84-1/84-1/84-1/84-1/84-7/84-7/84-7/84-7/86-1/166-1/167-1/47-1/4

7-13/167-13/167-3/47-3/47-3/47-3/4



4 x 6

4 x 6

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

2 x 3

3 x 4

3 x 6

4 x 6

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

2 x 3

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

3 x 4

3 x 4

1914N / P11914N / P31914P / P11914P / P31916D / P11916D / P31916E / P11916E / P31916F / P11916F / P31916G / P11916G / P31916H / P11916H / P31916J / P11916J / P31916K / P11916K / P31916L / P11916L / P31918D / P11918D / P31918E / P11918E / P31918F / P11918F / P31918G / P11918G / P31920D / P11920D / P31920E / P11920E / P31920F / P11920F / P31920G / P11920G / P31920H / P11920H / P31920J / P11920J / P31920K / P11920K / P3

8-3/48-3/4

1010

5-1/25-1/25-1/25-1/26-1/26-1/26-3/46-3/46-3/86-3/87-1/87-1/88-1/28-1/28-3/48-3/4

777777

6-3/46-3/44-1/24-1/24-1/24-1/2

6666

4-7/84-7/87-1/87-1/86-3/86-3/8

3939

43-1/243-1/221-3/421-3/421-3/421-3/422-1/222-1/223-3/423-3/4

2626

29-3/429-3/435-1/435-1/437-1/437-1/426-1/226-1/226-1/226-1/226-1/226-1/223-3/423-3/417-1/217-1/217-1/217-1/218-1/418-1/418-1/418-1/420-1/420-1/425-5/825-5/8

2828

39—

43-1/2—

22-3/4—

22-3/4—

23-1/2—25—26—

29-3/4—

35-1/4—

37-1/4—

27-1/2—

27-1/2—

27-1/2—25—

18-1/2—

18-1/2—

19-1/4—

19-1/2—

20-1/4—

25-5/8—28—

11-3/411-3/413-7/813-7/87-13/167-13/167-13/167-13/167-13/167-13/167-13/167-13/168-1/48-1/4

99

10-1/210-1/212-1/412-1/48-7/88-7/88-7/88-7/88-7/88-7/8

7-13/167-13/165-7/165-7/165-7/165-7/165-7/165-7/165-7/165-7/166-5/166-5/167-3/87-3/87-3/47-3/4

2-7/162-7/162-7/162-7/161-15/161-15/161-15/161-15/161-15/161-15/162-3/162-3/162-3/162-3/162-9/162-9/162-9/162-9/162-13/162-13/162-7/162-7/162-7/162-7/162-7/162-7/16

2-11/162-11/161-3/81-3/81-3/81-3/81-9/161-9/161-9/161-9/161-11/161-11/161-13/161-13/161-15/161-15/16

3803805455459595959510010010010014014022022032032037037015015015015015015011011050505050505060606565100100140140


Size Type A BC


Weight

7-3/47-3/48-7/88-7/84-1/84-1/84-1/84-1/84-7/84-7/86-1/86-1/86-1/166-1/167-1/47-1/47-3/47-3/47-3/47-3/45-1/25-1/25-1/25-1/25-1/25-1/26-1/86-1/84-1/84-1/84-1/84-1/84-7/84-7/84-7/84-7/85-1/85-1/87-1/47-1/46-1/86-1/8



1900/P (SRV-1/Q2.02)1900P.15


4 x 6

4 x 6

4 x 6

4 x 6

6 x 8

6 x 8

8 x 10

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

6 x 8

6 x 10

8 x 10

4 x 6

1920L / P11920L / P31920M / P11920M / P31920N / P11920N / P31920P / P11920P / P31920Q / P11920Q / P31920R / P11920R / P31920T / P11920T / P31922D / P11922D / P31922E / P11922E / P31922F / P11922F / P31922G / P11922G / P31922H / P11922H / P31922J / P11922J / P31922K / P11922K / P31922L / P11922L / P31922M / P11922M / P31922N / P11922N / P31922Q / P11922Q / P31922R / P11922R / P31922T / P11922T / P31923P / P11923P / P3

7-1/87-1/87-1/47-1/48-1/48-1/4

1010

9-1/29-1/29-1/29-1/2

1111

4-1/24-1/24-1/24-1/2

6666

4-7/84-7/87-1/87-1/86-3/86-3/8

8888

8-3/48-3/49-1/29-1/210-1/210-1/2

11111010

32323232

34-1/434-1/4

414141414343

53-3/853-3/817-1/217-1/217-1/217-1/218-1/418-1/4

1919

20-1/420-1/425-5/825-5/8

28283232

36-1/436-1/4

39394646

47-1/247-1/253-3/853-3/843-1/243-1/2

32—32—

34-1/4—41—41—43—

53-3/8—

18-1/2—

18-1/2—

19-1/4—

20-1/4—

20-1/4—

25-5/8—28—32—

36-1/4—39—46—

47-1/2—

53-3/8—

43-1/2—

9-1/29-1/29-3/89-3/810-1/210-1/211-1/211-1/213-5/813-5/814-1/214-1/216-1/216-1/25-7/165-7/165-7/165-7/165-7/165-7/166-5/166-5/166-5/166-5/167-3/87-3/87-3/47-3/49-1/29-1/210-3/410-3/411-3/411-3/414-1/414-1/415-1/815-1/816-1/216-1/213-7/813-7/8

1-15/161-15/161-15/161-15/161-15/161-15/161-15/161-15/162-1/42-1/42-1/42-1/42-7/162-7/161-3/81-3/81-3/81-3/81-9/161-9/161-9/161-9/161-11/161-11/161-13/161-13/161-15/161-15/162-3/162-3/162-3/162-3/162-3/162-3/162-11/162-11/162-11/162-11/162-7/162-7/162-3/162-3/16

22022023023026026035035044544551051084084050505050505065656565100100140140230230300300360360645645675675840840530530


Size Type A BC


Weight

7-1/167-1/16

77

7-3/47-3/48-7/88-7/89-7/169-7/169-7/169-7/1610-7/810-7/84-1/84-1/84-1/84-1/84-7/84-7/84-7/84-7/85-1/85-1/87-1/47-1/46-1/86-1/87-1/87-1/8

77

7-3/47-3/49-7/169-7/169-7/169-7/1610-7/810-7/88-7/88-7/8



1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

2 x 3

3 x 4

3 x 6

4 x 6

4 x 6

4 x 6

4 x 6

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

2 x 3

3 x 4

3 x 6

4 x 6

1924D / P11924D / P31924E / P11924E / P31924F / P11924F / P31924G / P11924G / P31924H / P11924H / P31924J / P11924J / P31924K / P11924K / P31924L / P11924L / P31924M / P11924M / P31924N / P11924N / P31924P / P11924P / P31926D / P11926D / P31926E / P11926E / P31926F / P11926F / P31926G / P11926G / P31926H / P11926H / P31926J / P11926J / P31926K / P11926K / P31926L / P11926L / P3

5-1/25-1/25-1/25-1/26-1/26-1/26-1/26-1/26-3/86-3/87-1/87-1/88-1/28-1/28-3/48-3/48-3/48-3/48-3/48-3/4

1010

5-1/25-1/25-1/25-1/26-1/26-1/26-3/46-3/46-3/86-3/87-1/87-1/88-1/28-1/28-3/48-3/4

21-3/421-3/421-3/421-3/422-1/222-1/222-1/222-1/2

2323

29-7/829-7/835-1/435-1/437-1/437-1/4

37373939

43-1/243-1/221-3/421-3/421-3/421-3/422-1/222-1/223-3/423-3/4

2626

29-3/429-3/435-1/435-1/437-1/437-1/4

22-3/4—

22-3/4—

23-1/2—

23-3/4—23—

29-7/8—

35-1/4—

37-1/4—37—39—

43-1/2-

22-3/4—

22-3/4—

23-1/2—25—26—

29-3/4—

35-1/4—

37-1/4—

7-13/167-13/167-13/167-13/167-13/167-13/167-13/167-13/16

7799

10-1/210-1/212-1/412-1/410-3/410-3/411-3/411-3/413-7/813-7/87-13/167-13/167-13/167-13/167-13/167-13/167-13/167-13/168-1/48-1/4

99

10-1/210-1/212-1/412-1/4

1-15/161-15/161-15/161-15/161-15/161-15/161-15/161-15/162-3/162-3/162-5/162-5/162-3/162-3/162-7/162-7/162-7/162-7/162-7/162-7/162-7/162-7/161-15/161-15/161-15/161-15/161-15/161-15/162-3/162-3/162-3/162-3/162-9/162-9/162-9/162-9/162-13/162-13/16

959595951001009595909018018030030036036034034038038054554595959595100100100100140140220220320320370370


Size Type A BC


Weight

4-1/84-1/84-1/84-1/84-7/84-7/84-7/84-7/86-1/166-1/167-1/47-1/4

7-13/167-13/167-3/47-3/47-3/47-3/47-3/47-3/48-7/88-7/84-1/84-1/84-1/84-1/84-7/84-7/86-1/86-1/86-1/166-1/167-1/47-1/47-3/47-3/47-3/47-3/4



1900/P (SRV-1/Q2.02)1900P.17


1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

2 x 3

1928D / P11928D / P31928E / P11928E / P31928F / P11928F / P31928G / P11928G / P3

777777

6-3/46-3/4

26-1/226-1/226-1/226-1/226-1/226-1/223-3/423-3/4

27-1/2—

27-1/2—

27-1/2—25—

8-7/88-7/88-7/88-7/88-7/88-7/8

7-13/167-13/16

2-7/162-7/162-7/162-7/162-7/162-7/162-11/162-11/16

150150150150150150110110


Size Type A BC


Weight

5-1/25-1/25-1/25-1/25-1/25-1/26-1/86-1/8


1900/P1 & P3 Series Valves – Metric Units

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

2 x 3

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

6 x 8

6 x 8

8 x 10

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

2 x 3

3 x 4

1905D / P11905D / P31905E / P11905E / P31905F / P11905F / P31905G / P11905G / P31905H / P11905H / P31905J / P11905J / P31905K / P11905K / P31905L / P11905L / P31905M / P11905M / P31905N / P11905N / P31905P / P11905P / P31905Q / P11905Q / P31905R / P11905R / P31905T / P11905T / P31906D / P11906D / P31906E / P11906E / P31906F / P11906F / P31906G / P11906G / P31906H / P11906H / P31906J / P11906J / P31906K / P11906K / P3

114.3114.3114.3114.3120.7120.7120.7120.7123.8123.8123.8123.8161.9161.9165.1165.1184.2184.2209.6209.6228.6228.6241.3241.3241.3241.3279.4279.4114.3114.3114.3114.3120.7120.7120.7120.7123.8123.8123.8123.8161.9161.9

431.8431.8431.8431.8450.9450.9450.9450.9495.3495.3539.8539.8622.3622.3730.3730.3755.7755.7838.2838.2870870

1041.41041.41092.21092.21200.21200.2431.8431.8431.8431.8450.9450.9450.9450.9495.3495.3539.8539.8622.3622.3

457.2—

457.2—

476.3—

482.6—

495.3—

539.8—

622.3—

730.3—

755.7—

838.2—870—

1041.4—

1092.2—

1200.2—

457.2—

457.2—

476.3—

482.6—

495.3—

539.8—

622.3—

138.1138.1138.1138.1138.1138.1138.1138.1160.3160.3174.6174.6184.2184.2225.4225.4238.1238.1257.2257.2279.4279.4346.1346.1368.3368.3419.1419.1138.1138.1138.1138.1138.1138.1138.1138.1160.3160.3174.6174.6184.2184.2

28.628.628.628.631.831.831.831.831.831.833.333.336.536.536.536.541.341.341.341.341.341.346464646

49.249.234.934.934.934.938.138.138.138.139.739.739.739.74646

20.420.420.420.420.420.424.924.927.227.23434

49.949.963.563.583.983.999.899.8117.9117.9195195

224.5224.5281.2281.220.420.420.420.420.420.424.924.927.227.23434

52.252.2

1900 Steam Internal - Dimensions (mm) & Weights (kg) - Metric Units

Size Type A BC


Weight

104.8104.8104.8104.8123.8123.8123.8123.8130.2130.2136.5136.5155.6155.6155.6155.6177.8177.8196.9196.9181181

239.7239.7239.7239.7276.2276.2104.8104.8104.8104.8123.8123.8123.8123.8130.2130.2136.5136.5155.6155.6



1900/P (SRV-1/Q2.02)1900P.19


3 x 4

4 x 6

4 x 6

4 x 6

6 x 8

6 x 8

8 x 10

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6

6 x 8

6 x 10

8 x 10

1906L / P11906L / P31906M / P11906M / P31906N / P11906N / P31906P / P11906P / P31906Q / P11906Q / P31906R / P11906R / P31906T / P11906T / P31910D / P11910D / P31910E / P11910E / P31910F / P11910F / P31910G / P11910G / P31910H / P11910H / P31910J / P11910J / P31910K / P11910K / P31910L / P11910L / P31910M / P11910M / P31910N / P11910N / P31910P / P11910P / P31910Q / P11910Q / P31910R / P11910R / P31910T / P11910T / P3

165.1165.1184.2184.2209.6209.6228.6228.6241.3241.3241.3241.3279.4279.4114.3114.3114.3114.3152.4152.4152.4152.4123.8123.8181181

161.9161.9181181

184.2184.2209.6209.6254254

241.3241.3266.7266.7279.4279.4

730.3730.3755.7755.7838.2838.2870870

1041.41041.41092.21092.21200.21200.2444.5444.5444.5444.5463.6463.6463.6463.6514.4514.4650.9650.9711.2711.2812.8812.8812.8812.8870870

1041.41041.41098.61098.61155.71155.71355.71355.7

730.3—

755.7—

838.2—870—

1041.4—

1092.2—

1200.2—

469.9—

469.9—489—

495.3—

514.4—

650.9—

711.2—

812.8—

812.8—870—

1041.4—

1098.6—

1155.7—

1355.7—

225.4225.4238.1238.1257.2257.2279.4279.4346.1346.1368.3368.3419.1419.1138.1138.1138.1138.1138.1138.1138.1138.1160.3160.3187.3187.3196.9196.9241.3241.3238.1238.1266.7266.7292.1292.1355.6355.6368.3368.3419.1419.1

4646

49.249.249.249.249.249.257.257.257.257.261.961.934.934.934.934.939.739.739.739.742.942.949.249.249.249.249.249.249.249.249.249.249.249.257.257.257.257.261.961.9

65.865.886.286.2102.1102.1122.5122.5201.9201.9231.3231.3290.3290.322.722.722.722.722.722.727.227.229.529.545.445.463.563.599.899.8104.3104.3117.9117.9158.8158.8240.4240.4249.5249.5381381


Size Type A BC


Weight

155.6155.6177.8177.8196.9196.9181181

239.7239.7239.7239.7276.2276.2104.8104.8104.8104.8123.8123.8123.8123.8130.2130.2184.2184.2155.6155.6179.4179.4177.8177.8196.9196.9225.4225.4239.7239.7239.7239.7276.2276.2



1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6

6 x 8

6 x 10

8 x 10

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

2 x 3

3 x 4

3 x 6

4 x 6

4 x 6

1912D / P11912D / P31912E / P11912E / P31912F / P11912F / P31912G / P11912G / P31912H / P11912H / P31912J / P11912J / P31912K / P11912K / P31912L / P11912L / P31912M / P11912M / P31912N / P11912N / P31912P / P11912P / P31912Q / P11912Q / P31912R / P11912R / P31912T / P11912 T / P31914D / P11914D / P31914E / P11914E / P31914F / P11914F / P31914G / P11914G / P31914H / P11914H / P31914J / P11914J / P31914K / P11914K / P31914L / P11914L / P31914M / P11914M / P3

114.3114.3114.3114.3152.4152.4152.4152.4161.9161.9181181181181

203.2203.2203.2203.2222.3222.3254254

241.3241.3266.7266.7279.4279.4139.7139.7139.7139.7165.1165.1165.1165.1161.9161.9181181

215.9215.9222.3222.3222.3222.3

463.6463.6463.6463.6482.6482.6482.6482.6584.2584.2758.8758.8743743

812.8812.8920.8920.8990.6990.61104.91104.91168.41168.41206.51206.51368.41368.4552.5552.5552.5552.5571.5571.5571.5571.5660.4660.4755.7755.7895.4895.4946.2946.2939.8939.8

489—489—508—

514.4—

584.2—

758.8—743—

812.8—

920.8—

990.6—

1104.9—

1168.4—

1206.5—

1368.4—

577.9—

577.9—

596.9—

603.3—

660.4—

755.7—

895.4—

946.2—

939.8—

160.3160.3160.3160.3160.3160.3160.3160.3177.8177.8228.6228.6196.9196.9241.3241.3273.1273.1298.5298.5352.4352.4362362

384.2384.2419.1419.1198.4198.4198.4198.4198.4198.4198.4198.4209.6209.6228.6228.6266.7266.7311.2311.2273.1273.1

34.934.934.934.939.739.739.739.742.942.94646

49.249.255.555.555.555.555.555.555.555.568.368.368.368.361.961.949.249.249.249.249.249.249.249.255.555.555.555.555.555.561.961.961.961.9

25252525

27.227.229.529.538.638.677.177.16868

104.3104.3136.1136.1163.3163.3240.4240.4292.6292.6306.2306.238138143.143.143.143.145.445.443.143.15959

88.588.5136.1136.1163.3163.3154.2154.2

Size Type A BC


Weight

104.8104.8104.8104.8123.8123.8123.8123.8154154

184.2184.2184.2184.2179.4179.4177.8177.8196.9196.9225.4225.4239.7239.7239.7239.7276.2276.2104.8104.8104.8104.8123.8123.8123.8123.8154154

184.2184.2198.4198.4196.9196.9196.9196.9




1900/P (SRV-1/Q2.02)1900P.21


4 x 6

4 x 6

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

2 x 3

3 x 4

3 x 6

4 x 6

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

2 x 3

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

3 x 4

3 x 4

1914N / P11914N / P31914P / P11914P / P31916D / P11916D / P31916E / P11916E / P31916F / P11916F / P31916G / P11916G / P31916H / P11916H / P31916J / P11916J / P31916K / P11916K / P31916L / P11916L / P31918D / P11918D / P31918E / P11918E / P31918F / P11918F / P31918G / P11918G / P31920D / P11920D / P31920E / P11920E / P31920F / P11920F / P31920G / P11920G / P31920H / P11920H / P31920J / P11920J / P31920K / P11920K / P3

222.3222.3254254

139.7139.7139.7139.7165.1165.1171.5171.5161.9161.9181181

215.9215.9222.3222.3177.8177.8177.8177.8177.8177.8171.5171.5114.3114.3114.3114.3152.4152.4152.4152.4123.8123.8181181

161.9161.9

990.6990.61104.91104.9552.5552.5552.5552.5571.5571.5603.3603.3660.4660.4755.7755.7895.4895.4946.2946.2673.1673.1673.1673.1673.1673.1603.3603.3444.5444.5444.5444.5463.6463.6463.6463.6514.4514.4651651

711.2711.2

990.6—

1104.9—

577.9—

577.9—

596.9-—635—

660.4—

755.7—

895.4—

946.2—

698.5—

698.5—

698.5—635—

469.9—

469.9—489—

495.3—

514.4—651—

711.2—

298.5298.5352.4352.4198.4198.4198.4198.4198.4198.4198.4198.4209.6209.6228.6228.6266.7266.7311.2311.2225.4225.4225.4225.4225.4225.4198.4198.4138.1138.1138.1138.1138.1138.1138.1138.1160.3160.3187.3187.3196.9196.9

61.961.961.961.949.249.249.249.249.249.255.555.555.555.565.165.165.165.171.471.461.961.961.961.961.961.968.268.234.934.934.934.939.739.739.739.742.842.84646

49.249.2

172.4172.4247.2247.243.143.143.143.145.445.445.445.463.563.599.899.8145.2145.2167.8167.8

686868686868

49.949.922.722.722.722.722.722.727.227.229.529.545.445.463.563.5


Size Type A BC


Weight

196.9196.9225.4225.4104.8104.8104.8104.8123.8123.8155.6155.6154154

184.2184.2196.9196.9196.9196.9139.7139.7139.7139.7139.7139.7155.6155.6104.8104.8104.8104.8123.8123.8123.8123.8130.2130.2184.2184.2155.6155.6



4 x 6

4 x 6

4 x 6

4 x 6

6 x 8

6 x 8

8 x 10

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

6 x 8

6 x 10

8 x 10

4 x 6

1920L / P11920L / P31920M / P11920M / P31920N / P11920N / P31920P / P11920P / P31920Q /P11920Q / P31920R / P11920R / P31920T / P11920T / P31922D / P11922D / P31922E / P1 1922E / P31922F / P11922F / P31922G / P11922G / P31922H / P11922H / P31922J / P11922J / P31922K / P11922K / P31922L / P11922L / P31922M / P11922M / P31922N / P11922N / P31922Q / P1 1922Q / P31922R / P11922R / P31922T / P11922T / P31923P / P11923P / P3

181181

184.2184.2209.6209.6254254

241.3241.3241.3241.3279.4279.4114.3114.3114.3114.3152.4152.4152.4152.4123.8123.8181181

161.9161.9203.2203.2203.2203.2222.3222.3241.3241.3266.7266.7279.4279.4254254

812.8812.8812.8812.8870870

1041.41041.41041.41041.41092.21092.21355.71355.7444.5444.5444.5444.5463.6463.6482.6482.6514.4514.4650.9650.9711.2711.2812.8812.8920.8920.8990.6990.61168.41168.41206.51206.51355.71355.71104.91104.9

812.8-—

812.8—870—

1041.4—

1041.4—

1092.2-—

1355.7—

469.9—

469.9—489—

514.4—

514.4—

650.9—

711.2—

812.8—

920.8-

990.6—

1168.4—

1206.5—

1355.7—

1104.9—

241.3241.3238.1238.1266.7266.7292.1292.1346.1346.1368.3368.3419.1419.1138.1138.1138.1138.1138.1138.1160.3160.3160.3160.3187.3187.3196.9196.9241.3241.3273.1273.1298.5298.5362362

384.2384.2419.1419.1352.4352.4

49.249.249.249.249.249.249.249.257.257.257.257.261.961.934.934.934.934.939.739.739.739.742.842.84646

49.249.255.655.655.655.655.655.668.368.368.368.361.961.955.655.6

99.899.8104.3104.3117.9117.9158.8158.8201.9201.9231.3231.338138122.722.722.722.722.722.729.529.529.529.545.445.463.563.5104.3104.3136.1136.1163.3163.3292.6292.6306.2306.2381381

240.4240.4


Size Type A BC


Weight

179.4179.4177.8177.8196.9196.9225.4225.4239.7239.7239.7239.7276.2276.2104.8104.8104.8104.8123.8123.8123.8123.8130.2130.2184.2184.2155.6155.6181181

177.8177.8196.9196.9239.7239.7239.7239.7276.2276.2225.4225.4



1900/P (SRV-1/Q2.02)1900P.23


1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

2 x 3

3 x 4

3 x 6

4 x 6

4 x 6

4 x 6

4 x 6

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

2 x 3

2 x 3

3 x 4

3 x 6

4 x 6

1924D / P11924D / P31924E / P11924E / P31924F / P11924F / P31924G / P11924G / P31924H / P11924H / P31924J / P11924J / P31924K / P11924K / P31924L / P11924L / P31924M / P11924M / P31924N / P11924N / P31924P / P11924P / P31926D / P11926D / P31926E / P11926E / P31926F / P11926F / P31926G / P11926G / P31926H / P11926H / P31926J / P11926J / P31926K / P11926K / P31926L / P11926L / P3

139.7139.7139.7139.7165.1165.1165.1165.1161.9161.9181181

215.9215.9222.3222.3222.3222.3222.3222.3254254

139.7139.7139.7139.7165.1165.1171.5171.5161.9161.9181181

215.9215.9222.3222.3

552.5552.5552.5552.5571.5571.5571.5571.5584.2584.2758.8758.8895.4895.4946.2946.2939.8939.8990.6990.61104.91104.9552.5552.5552.5552.5571.5571.5603.3603.3660.4660.4755.7755.7895.4895.4946.2946.2

577.9—

577.9—

596.9—

603.3—

584.2—

758.8—

895.4—

946.2—

939.8—

990.6—

1104.9—

577.9—

577.9—

596.9—635—

660.4—

755.7—

895.4—

946.2—

198.4198.4198.4198.4198.4198.4198.4198.4177.8177.8228.6228.6266.7266.7311.2311.2273.1273.1298.5298.5352.4352.4198.4198.4198.4198.4198.4198.4198.4198.4209.6209.6228.6228.6266.7266.7311.2311.2

49.249.249.249.249.249.249.249.255.655.658.758.755.655.661.961.961.961.961.961.961.961.949.249.249.249.249.249.255.655.655.655.665.165.165.165.171.471.4

43.143.143.143.145.445.443.143.140.840.881.681.6136.1136.1163.3163.3154.2154.2172.4172.4247.2247.243.143.143.143.145.445.445.445.463.563.599.899.8145.2145.2167.8167.8


Size Type A BC


Weight

104.8104.8104.8104.8123.8123.8123.8123.8154154

184.2184.2198.4198.4196.9196.9196.9196.9196.9196.9225.4225.4104.8104.8104.8104.8123.8123.8155.6155.6154154

184.2184.2196.9196.9196.9196.9



1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

2 x 3

1928D / P11928D / P31928E / P11928E / P31928F / P11928F / P31928G / P11928G / P3

177.8177.8177.8177.8177.8177.8171.5171.5

673.1673.1673.1673.1673.1673.1603.3603.3

698.5—

698.5—

698.5—635—

225.4225.4225.4225.4225.4225.4198.4198.4

61.961.961.961.961.961.968.268.2

686868686868

49.949.9


Size Type A BC


Weight

139.7139.7139.7139.7139.7139.7155.6155.6


1900/P SeriesPressure / Temperature

1900/P (SRV-1/Q2.02)1900P.25

D

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesD Orifice - API area: 0.110 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

D /

P119

05D

/ P3

1906

D /

P119

06D

/ P3

1910

D /

P119

10D

/ P3

1912

D /

P119

12D

/ P3

1914

D /

P119

14D

/ P3

1916

D /

P119

16D

/ P3

1918

D /

P119

18D

/ P3

1920

D /

P119

20D

/ P3

1922

D /

P119

22D

/ P3

1924

D /

P119

24D

/ P3

1926

D /

P119

26D

/ P3

1928

D /

P119

28D

/ P3

1905

-30D

/ P1

—19

06-30

D /

P1—

1910

-30D

/ P1

—19

12-30

D /

P1—

1914

-30D

/ P1

—19

16-30

D /

P1—

1918

-30D

/ P1

—19

20-30

D /

P1—

1922

-30D

/ P1

—19

24-30

D /

P1—

1926

-30D

/ P1

—19

28-30

D /

P1—

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

300

300

300

150

150

300

300

300

150

300

300

600

900

1500

2500

300

600

900

1500

2500

285

285

285

285

740

740

1480

1480

2220

2220

3705

3705

6000

6000 — — — — — — — — — —

210

210

285

285

625

625

1205

1205

1740

1740

2735

2735

4460

4460 — — — — — — — — — —

— — — — — — — — — — — — — — 485

485

975

975

1460

1460

2435

2435

4060

4060

285

— 285

— 285

— 285

— 600

— 600

— 740

— 285

— 285

— 600

— 600

— 740

—

80 80 285

285

410

410

825

825

1235

1235

2060

2060

3430

3430

510

510

1015

1015

1525

1525

2540

2540

4230

4230

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

230

— 230

— 230

-— 230

— 500

— 500

— 500

— 230

— 230

— 500

— 500

— 500

—

1900/P SeriesPressure / TemperatureD

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesD Orifice - API area: 0.110 Sq. in.


1920

D19

22D

1906

D

1905

D19

10D

1912

D19

14D

1916

D19

18D

1924

D19

26D

1928

D

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*

1900/P SeriesPressure / Temperature E

1900/P (SRV-1/Q2.02)1900P.27

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesE Orifice - API area: 0.196 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

E / P1

1905

E / P3

1906

E / P1

1906

E / P3

1910

E / P1

1910

E / P3

1912

E / P1

1912

E / P3

1914

E / P1

1914

E / P3

1916

E / P1

1916

E / P3

1918

E / P1

1918

E / P3

1920

E / P1

1920

E / P3

1922

E / P1

1922

E / P3

1924

E / P1

1924

E / P3

1926

E / P1

1926

E / P3

1928

E / P1

1928

E / P3

1905

-30E /

P1—

1906

-30E /

P1—

1910

-30E /

P1—

1912

-30E /

P1—

1914

-30E /

P1—

1916

-30E /

P1—

1918

-30E /

P1—

1920

-30E /

P1—

1922

-30E /

P1—

1924

-30E /

P1—

1926

-30E /

P1—

1928

-30E /

P1—

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

300

300

300

150

150

300

300

300

150

300

300

600

900

1500

2500

300

600

900

1500

2500

285

285

285

285

740

740

1480

1480

2220

2220

3705

3705

6000

6000 — — — — — — — — — —

210

210

285

285

625

625

1205

1205

1740

1740

2735

2735

4460

4460 — — — — — — — — — —

— — — — — — — — — — — — — — 485

485

975

975

1460

1460

2435

2435

4060

4060

285

— 285

— 285

— 285

— 600

— 600

— 740

— 285

— 285

— 600

— 600

— 740

—

80 80 285

285

410

410

825

825

1235

1235

2060

2060

3430

3430

510

510

1015

1015

1525

1525

2540

2540

4230

4230

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

230

— 230

— 230

— 230

— 500

— 500

— 500

— 230

— 230

— 500

— 500

— 500

—

1900/P SeriesPressure / TemperatureE


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesE Orifice - API area: 0.196 Sq. in.

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

E19

22E

1906

E

1905

E19

10E

1912

E19

14E

1916

E19

18E

1924

E19

26E

1928

E

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*


1900/P (SRV-1/Q2.02)1900P.29

F

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesF Orifice - API area: 0.307 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

F / P1

1905

F / P3

1906

F / P1

1906

F / P3

1910

F / P1

1910

F / P3

1912

F / P1

1912

F / P3

1914

F / P1

1914

F / P3

1916

F / P1

1916

F / P3

1918

F / P1

1918

F / P3

1920

F / P1

1920

F / P3

1922

F / P1

1922

F / P3

1924

F / P1

1924

F / P3

1926

F / P1

1926

F / P3

1928

F / P1

1928

F / P3

1905

-30F /

P1—

1906

-30F /

P1—

1910

-30F /

P1—

1912

-30F /

P1—

1914

-30F /

P1—

1916

-30F /

P1—

1918

-30F /

P1—

1920

-30F /

P1—

1922

-30F /

P1—

1924

-30F /

P1—

1926

-30F /

P1—

1928

-30F /

P1—

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

300

300

300

150

150

300

300

300

150

300

300

600

900

1500

2500

300

600

900

1500

2500

285

285

285

285

740

740

1480

1480

2220

2220

3705

3705

5000

5000 — — — — — — — — — —

210

210

285

285

625

625

1205

1205

1740

1740

2735

2735

4460

4460 — — — — — — — — — —

— — — — — — — — — — — — — — 485

485

975

975

1460

1460

2435

2435

4060

4060

285

— 285

— 285

— 285

— 740

— 740

— 740

— 285

— 285

— 740

— 740

— 740

—

80 80 285

285

410

410

825

825

1235

1235

2060

2060

3430

3430

510

510

1015

1015

1525

1525

2540

2540

4230

4230

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

230

— 230

— 230

— 230

— 500

— 500

— 500

— 230

— 230

— 500

— 500

— 500

—

1900/P SeriesPressure / TemperatureF


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesF Orifice - API area: 0.307 Sq. in.

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

F19

22F

1906

F

1905

F19

10F

1912

F19

14F

1916

F19

18F

1924

F19

26F

1928

F

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*


1900/P (SRV-1/Q2.02)1900P.31

G

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesG Orifice - API area: 0.503 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

G /

P119

05G

/ P3

1906

G /

P119

06G

/ P3

1910

G /

P119

10G

/ P3

1912

G /

P119

12G

/ P3

1914

G /

P119

14G

/ P3

1916

G /

P119

16G

/ P3

1918

G /

P119

18G

/ P3

1920

G /

P119

20G

/ P3

1922

G /

P119

22G

/ P3

1924

G /

P119

24G

/ P3

1926

G /

P119

26G

/ P3

1928

G /

P119

28G

/ P3

1905

-30G

/ P1

—19

06-30

G /

P1—

1910

-30G

/ P1

—19

12-30

G /

P1—

1914

-30G

/ P1

—19

16-30

G /

P1—

1918

-30G

/ P1

—19

20-30

G /

P1—

1922

-30G

/ P1

—19

24-30

G /

P1—

1926

-30G

/ P1

—19

28-30

G /

P1—

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

300

300

300

150

150

300

300

300

150

300

300

600

900

1500

2500

300

600

900

1500

2500

285

285

285

285

740

740

1480

1480

2230

2230

3600

3600

3600

3600 — — — — — — — — — —

210

210

285

285

625

625

1205

1205

1740

1740

2735

2735

3600

3600 — — — — — — — — — -—

— — -— — — — — — — -— — — -— — 485

485

975

975

1460

1460

2435

2435

3600

3600

285

— 285

— 285

— 285

— 740

— 740

— 740

— 285

— 285

— 740

— 740

— 740

—

80 80 285

285

410

410

825

825

1235

1235

2060

2060

3430

3430

510

510

1015

1015

1525

1525

2540

2540

3600

3600

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

230

— 230

— 230

— 230

— 470

— 470

— 470

— 230

— 230

— 470

— 470

— 470

—

1900/P SeriesPressure / TemperatureG


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesG Orifice - API area: 0.503 Sq. in.

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

G19

22G

1906

G

1905

G19

10G

1912

G19

14G

1916

G

1924

G19

26G

1928

G

1918

G

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*

1900/P SeriesPressure / Temperature H

1900/P (SRV-1/Q2.02)1900P.33

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesH Orifice - API area: 0.785 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

H /

P119

05H

/ P3

1906

H /

P119

06H

/ P3

1910

H /

P119

10H

/ P3

1912

H /

P119

12H

/ P3

1914

H /

P119

14H

/ P3

1916

H /

P119

16H

/ P3

1920

H /

P119

20H

/ P3

1922

H /

P119

22H

/ P3

1924

H /

P119

24H

/ P3

1926

H /

P119

26H

/ P3

1905

-30H

/ P1

—19

06-30

H /

P1—

1910

-30H

/ P1

—19

12-30

H /

P1—

1914

-30H

/ P1

—19

16-30

H /

P1—

1920

-30H

/ P1

—19

22-30

H /

P1—

1924

-30H

/ P1

—19

26-30

H /

P1—

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

300

150

150

150

300

150

300

300

600

900

1500

300

600

900

1500

285

285

285

285

740

740

1480

1480

2220

2220

2750

2750 — — — — — — — —

210

210

285

285

625

625

1205

1205

1740

1740

2735

2735 — — — — — — — —

— — — — — — — — — — — — 485

485

975

975

1460

1460

2435

2435

285

— 285

— 285

— 285

— 285

— 740

— 285

— 285

— 285

— 740

—

80 80 285

285

410

410

825

825

1235

1235

2060

2060

510

510

1015

1015

1525

1525

2540

2540

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

230

— 230

— 230

— 230

— 230

— 415

— 230

— 230

— 230

— 230

-—

1900/P SeriesPressure / TemperatureH


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesH Orifice - API area: 0.785 Sq. in.

020

040

060

080

010

0012

0014

0016

0018

0020

0024

0028

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

H19

22H

1906

H

1905

H19

10H

1912

H19

14H

1916

H

1924

H19

26H

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*

1900/P SeriesPressure / Temperature J

1900/P (SRV-1/Q2.02)1900P.35

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesJ Orifice - API area: 1.287 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

J / P1

1905

J / P3

1906

J / P1

1906

J / P3

1910

J / P1

1910

J / P3

1912

J / P1

1912

J / P3

1914

J / P1

1914

J / P3

1916

J / P1

1916

J / P3

1920

J / P1

1920

J / P3

1922

J / P1

1922

J / P3

1924

J / P1

1924

J / P3

1926

J / P1

1926

J / P3

1905

-30J /

P1—

1906

-30J /

P1—

1910

-30J /

P1—

1912

-30J /

P1—

1914

-30J /

P1—

1916

-30J /

P1—

1920

-30J /

P1—

1922

-30J /

P1—

1924

-30J /

P1—

1926

-30J /

P1—

2 x 3

2 x

3

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

300

150

150

150

300

150

300

300

600

900

1500

300

600

900

1500

285

285

285

285

740

740

1480

1480

2220

2220

2700

2700 — — — — — — — —

210

210

285

285

625

625

1205

1205

1740

1740

2700

2700 — — — — — — — —

— — — — — — — — — — — — 485

485

975

975

1460

1460

2435

2435

285

— 285

— 285

— 285

— 285

— 600

— 285

— 285

— 285

— 600

—

80 80 285

285

410

410

825

825

1235

1235

2060

2060

510

510

1015

1015

1525

1525

2540

2540

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

230

— 230

— 230

— 230

— 230

— 230

— 230

— 230

— 230

— 230

—

1900/P SeriesPressure / TemperatureJ


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesJ Orifice - API area: 1.287 Sq. in.

020

040

060

080

010

0012

0014

0016

0018

0020

0024

0028

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

J19

22J

1906

J

1905

J19

10J

1912

J19

14J

1916

J

1924

J19

26J

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*


1900/P (SRV-1/Q2.02)1900P.37

K

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesK Orifice - API area: 1.838 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

K /

P119

05K

/ P3

1906

K /

P119

06K

/ P3

1910

K /

P119

10K

/ P3

1912

K /

P119

12K

/ P3

1914

K /

P119

14K

/ P3

1916

K /

P119

16K

/ P3

1920

K /

P119

20K

/ P3

1922

K /

P119

22K

/ P3

1924

K /

P119

24K

/ P3

1926

K /

P119

26K

/ P3

1905

-30K

/ P1

—19

06-30

K /

P1—

1910

-30K

/ P1

—19

12-30

K /

P1—

1914

-30K

/ P1

—19

16-30

K /

P1—

1920

-30K

/ P1

—19

22-30

K /

P1—

1924

-30K

/ P1

—19

26-30

K /

P1—

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 6

3 x 6

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

300

150

150

150

300

150

300

300

600

900

1500

300

600

900

1500

285

285

285

285

740

740

1480

1480

2220

2220

2160

2160 — — — — — — — —

210

210

285

285

625

625

1205

1205

1740

1740

2160

2160 — — — — — — — —

— — — — — — — — — — — — 485

485

975

975

1460

1460

2160

2160

285

— 285

— 285

— 285

— 285

— 600

— 285

— 285

— 285

— 600

—

80 80 285

285

410

410

825

825

1235

1235

2060

2060

510

510

1015

1015

1525

1525

2160

2160

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

150

— 150

— 150

— 200

— 200

— 200

— 150

— 200

— 200

— 200

—

1900/P SeriesPressure / TemperatureK


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesK Orifice - API area: 1.838 Sq. in.

020

040

060

080

010

0012

0014

0016

0018

0020

0022

0024

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

K19

22K

1906

K

1905

K19

10K

1912

K19

14K

1916

K

1924

K19

26K

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*


1900/P (SRV-1/Q2.02)1900P.39

L

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesL Orifice - API area: 2.853 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

L / P1

1905

L / P3

1906

L / P1

1906

L / P3

1910

L / P1

1910

L / P3

1912

L / P1

1912

L / P3

1914

L / P1

1914

L / P3

1916

L / P1

1916

L / P3

1920

L / P1

1920

L / P3

1922

L / P1

1922

L / P3

1924

L / P1

1924

L / P3

1926

L / P1

1926

L / P3

1905

-30L /

P1—

1906

-30L /

P1—

1910

-30L /

P1—

1912

-30L /

P1—

1914

-30L /

P1—

1916

-30L /

P1—

1920

-30L /

P1—

1922

-30L /

P1—

1924

-30L /

P1—

1926

-30L /

P1-—

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

150

150

150

150

150

150

300

300

600

900

1500

300

600

900

1500

285

285

285

285

740

740

1000

1000

1500

1500

1500

1500 — — — — — — — —

210

210

285

285

625

625

1000

1000

1500

1500

1500

1500 — — — — — — — —

— — — — — — — — — — — — 485

485

975

975

1235

1235

1500

1500

285

— 285

— 285

— 285

— 285

— 285

— 285

— 285

— 285

— 285

—

80 80 285

285

410

410

825

825

1235

1235

1500

1500

510

510

1015

1015

1500

1500

1500

1500

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

100

— 100

— 170

— 170

— 170

— 170

— 170

— 170

— 170

— 170

—

1900/P SeriesPressure / TemperatureL


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesL Orifice - API area: 2.853 Sq. in.

020

040

060

080

010

0012

0014

0016

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

L19

22L

1906

L

1905

L19

10L

1912

L19

14L

1924

L19

26L

1916

L

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*


1900/P (SRV-1/Q2.02)1900P.41

M

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesM Orifice - API area: 3.60 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

M /

P119

05M

/ P3

1906

M /

P119

06M

/ P3

1910

M /

P119

10M

/ P3

1912

M /

P119

12M

/ P3

1914

M /

P119

14M

/ P3

1920

M /

P119

20M

/ P3

1922

M /

P119

22M

/ P3

1924

M /

P119

24M

/ P3

1905

-30M

/ P1

—19

06-30

M /

P1—

1910

-30M

/ P1

—19

12-30

M /

P1—

1914

-30M

/ P1

—19

20-30

M /

P1—

1922

-30M

/ P1

—19

24-30

M /

P1—

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

150

150

150

150

300

300

600

900

300

600

900

285

285

285

285

740

740

1100

1100

1100

1100 — — — — — —

210

210

285

285

625

625

1100

1100

1100

1100 — — — — — —

— — — — — — — — — — 485

485

975

975

1100

1100

285

— 285

— 285

— 285

— 285

— 285

— 285

— 285

—

80 80 285

285

410

410

825

825

1100

1100

510

510

1015

1015

1100

1100

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

80 — 80 — 160

— 160

— 160

— 160

— 160

— 160

—

1900/P SeriesPressure / TemperatureM


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesM Orifice - API area: 3.60 Sq. in.

020

040

060

080

010

0012

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

M19

22M

1906

M

1905

M19

10M

1912

M

1924

M

1914

M

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*


1900/P (SRV-1/Q2.02)1900P.43

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesN Orifice - API area: 4.34 Sq. in.

N

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

N /

P119

05N

/ P3

1906

N /

P119

06N

/ P3

1910

N /

P119

10N

/ P3

1912

N /

P119

12N

/ P3

1914

N /

P119

14N

/ P3

1920

N /

P119

20N

/ P3

1922

N /

P119

22N

/ P3

1924

N /

P119

24N

/ P3

1905

-30N

/ P1

—19

06-30

N /

P1—

1910

-30N

/ P1

—19

12-30

N /

P1—

1914

-30N

/ P1

—19

20-30

N /

P1—

1922

-30N

/ P1

—19

24-30

N /

P1—

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

150

150

150

150

300

300

600

900

300

600

900

285

285

285

285

740

740

1000

1000

1000

1000 — — — — — —

210

210

285

285

625

625

1000

1000

1000

1000 — — — — — —

— — — — — — — — — — 485

485

975

975

1000

1000

285

— 285

— 285

— 285

— 285

— 285

— 285

— 285

—

80 80 285

285

410

410

975

975

1000

1000

510

510

1000

1000

1000

1000

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

80 — 80 — 160

— 160

— 160

— 160

— 160

— 160

—



Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesN Orifice - API area: 4.34 Sq. in.

020

040

060

080

010

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

N19

22N

1906

N

1905

N19

10N

1912

N

1924

N

1914

N

N

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*


1900/P (SRV-1/Q2.02)1900P.45

P

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesP Orifice - API area: 6.38 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

P / P1

1905

P / P3

1906

P / P1

1906

P / P3

1910

P / P1

1910

P / P3

1912

P / P1

1912

P / P3

1914

P / P1

1914

P / P3

1920

P / P1

1920

P / P3

1923

P / P1

1923

P / P3

1924

P / P1

1924

P / P3

1905

-30P /

P1—

1906

-30P /

P1—

1910

-30P /

P1—

1912

-30P /

P1—

1914

-30P /

P1—

1920

-30P /

P1—

1923

-30P /

P1—

1924

-30P /

P1—

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

150

150

150

150

300

300

600

900

300

600

900

285

285

285

285

525

525

1000

1000

1000

1000 — — — — — —

210

210

285

285

525

525

1000

1000

1000

1000 — — — — — —

— — — — — — — — — — 485

485

975

975

1000

1000

285

— 285

— 285

— 285

— 285

— 285

— 285

— 285

—

80 80 285

285

410

410

825

825

1000

1000

510

510

1000

1000

1000

1000

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

80 — 80 — 150

— 150

— 150

— 150

— 150

— 150

—

1900/P SeriesPressure / TemperatureP


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesP Orifice - API area: 6.38 Sq. in.

020

040

060

080

010

00

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

P19

23P

1906

P

1905

P19

10P

1912

P

1924

P

1914

P

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*

1900/P SeriesPressure / Temperature Q

1900/P (SRV-1/Q2.02)

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesQ Orifice - API area: 11.05 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

Q /

P119

05Q

/ P3

1906

Q /

P119

06Q

/ P3

1910

Q /

P119

10Q

/ P3

1912

Q /

P119

12Q

/ P3

1920

Q /

P119

20Q

/ P3

1922

Q /

P119

22Q

/ P3

1905

-30Q

/ P1

—19

06-30

Q /

P1—

1910

-30Q

/ P1

—19

12-30

Q /

P1—

1920

-30Q

/ P1

—19

22-30

Q /

P1—

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

150

150

300

300

600

300

600

165

165

165

165

300

300

600

600

— — — —

165

165

165

165

300

300

600

600

— — — —

— — — — — — — — 165

165

600

600

115

— 115

— 115

— 115

— 115

— 115

—

80 80 165

165

300

300

600

600

165

165

600

600

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

70 — 70 — 115

— 115

— 115

— 115

—

1900P.47

1900/P SeriesPressure / TemperatureQ


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesQ Orifice - API area: 11.05 Sq. in.

010

020

030

040

050

060

0

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

Q19

22Q

1905

Qor

1906

Q19

10Q

1912

Q

1906

Q

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*


1900/P (SRV-1/Q2.02)1900P.49

R

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesR Orifice - API area: 16.0 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

R /

P119

05R

/ P3

1906

R /

P119

06R

/ P3

1910

R /

P119

10R

/ P3

1912

R /

P119

12R

/ P3

1920

R /

P119

20R

/ P3

1922

R /

P119

22R

/ P3

1905

-30R

/ P1

—19

06-30

R /

P1—

1910

-30R

/ P1

—19

12-30

R /

P1—

1920

-30R

/ P1

—19

22-30

R /

P1—

6 x 8

6 x 8

6 x 1

0

6 x 1

0

6 x 8

6 x 1

0

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

150

150

300

300

600

300

600

100

100

100

100

230

230

300

300

— — — —

100

100

100

100

230

230

300

300

— — — —

— — — — — — — — 100

100

300

300

60 — 60 — 100

— 100

— 60 — 100

—

80 80 100

100

230

230

300

300

100

100

300

300

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

60 — 60 — 100

— 100

— 60 — 100

—

1900/P SeriesPressure / TemperatureR

Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesR Orifice - API area: 16.0 Sq. in.


050

100

150

200

250

300

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1920

R19

22R

1905

Ror

1906

R19

10R

1912

R

1906

R

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*

1900/P SeriesPressure / Temperature T

1900/P (SRV-1/Q2.02)1900P.51

Selection Table for Steam Service1900 & 1900-30 P1 & P3 SeriesT Orifice - Area: 30.21 Sq. in.

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

100

Sat.

Stm

.80

085

0

Valv

e Si

zeIn

let x

Out

let

1905

T / P1

1905

T / P3

1906

T / P1

1906

T / P3

1910

T / P1

1910

T / P3

1912

T / P1

1912

T / P3

1920

T / P1

1920

T / P3

1922

T / P1

1922

T / P3

1905

-30T /

P1—

1906

-30T /

P1—

1910

-30T /

P1—

1912

-30T /

P1—

1920

-30T /

P1—

1922

-30T /

P1—

8 x 1

0

8 x 1

0

8 x 1

0

8 x 1

0

8 x 1

0

8 x 1

0

ANSI

Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig)

& Te

mpe

ratu

re L

imits

- °F

150

150

150

150

150

150

150

300

300

300

300

300

65 65 65 65 120

120

300

300

— — — —

65 65 65 65 120

120

300

300

— — — —

— — — — — — — — 120

120

300

300

30 — 30 — 60 — 100

— 60 — 100

—

65 65 65 65 120

120

300

300

120

120

300

300

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Stan

dard

Bello

ws

30 — 30 — 60 — 100

— 60 — 100

—

1900/P SeriesPressure / TemperatureT


Selection Chart for Steam Service1900 & 1900-30 P1 & P3 SeriesT Orifice - Area: 30.21 Sq. in.

050

100

150

200

250

300

850

800

700

600

500

400

300

200

100 0

*P3

Allo

y St

eel S

prin

g - a

ll te

mpe

ratu

re ra

tings

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

1922

T

1905

Tor

1906

T19

10T

1912

T

1920

T

SET

PRES

SURE

- lb

s. p

er S

q. in

.


P1/

P3*

1900/P SeriesOrifice Capacities

1900/P (SRV-1/Q2.02)1900P.53

NOTES: 1 Relieving capacities indicated are 90% of average capacity in accordance with latest ASME code requirements.2 For Superheat Correction Factors, refer to “Technical Information” section.

1782062623183744304875456036607768911007112312381354146915851700181619322047216322782394250926252740285629723549412747055283586164397016759481728750886512018157392035121465

1900 /P1 & P3 Flanged ValvesSTANDARD MATERIALS - ORIFICE CAPACITIES - STEAM

ASME B & PVC, Section I - (USCS Units)

Capacities based on Set Pressure plus 3%or 2 psi overpressure, whichever is greater.

Capacities in lbs. per hour of saturated steam.

4965747308871043119913571518167918412163248528073129345137734095441847405062538457066028635066726995731776397961828398941150413115147261633617947195582116822779243892471233500438715672559831

12681468186822682668306834723884429647085532635671808004882896521047611300121241294813772145961542016244170681789218716195402036421188253082942833548376684178845909500295414958269623896321385694112224145104153049

29703439437653136250718781339098100631102912959148891681918750206802261024540264712840130331322613419236122380523998241912438434577347703496335928568936785878823897889107541117192126843136494146146148076200738

———

581667338567104021223714071159241781419703215932537229151329313671040489442684804851827556065938563164669447072374502782818206185840896199339897178116074134970153866172762191658210554

—————————

10304119301518018431216822493228215315633491238260449565165258348650457174178437851349183098526105222111919118615125311132007138704145400152096158792165489172185205666239147272629306110339591

——————————

25841299173806946220543726252470757791538755095946112738129531146324163116179909196701213494230286247079263871

—-—-———————————————————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279

Orifice Area (Sq. in.)

Steam

Set Press.(psig)

15203040506070809010012014016018020022024026028030032034036038040042044046048050060070080090010001100120013001400150015202000250030003100

316366466566666765866969107211751380158617911997220324082614281930253231343636423847405342584464467048755081528663147342837093981042611454124821351014538155661577121380279993620338185

81394111971453171019662225248927533017354540734601512956576186671472427770829888269354988210410109381146611994125221305013578162191885921499241402678029420320613470137341399824051054917719189298998081

2078240630623718437350295691636670427717906810418117691311914470158211717118522198732122322574239242527526626279762932730678320283337934729414834823654989617426849575248820018875595508102261103611140460183945237838250862

460853356789824396961115012618141161561317110201052310026094290893208435078380734106844062470575005253046560415903662030650256802071014740097700491977106951121924136897151871166844181817196791211764226737

—————

70128118103301254214754169651919921478237562603430591351473970444261488175337457930624876704371600761578071385270898269438398939103496108052112609117166139948162731185514208297231080

——————————

178532066826300319323756343195488835468460485662857788689488101089112690124292135893147494159096170697182298193900205501217102228704240305251906263507275109286710298311356318

——————————————

4197148591618317507188311101551114923128560142197155835183109210383237658264932292206319481346755374030401304428578

—————————————————————————

In-House Review

1982Scope of Design

1982 (SRV-1/Q2.02)1982.1

1982

Table of Contents

Scope of Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1982.2Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1982.3Dimensions & Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1982.5Capacities (USCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1982.7

1982Scope of Deign


This product is normally supplied with threaded inlet and oulet connections. The valve ranges in inlet sizes from 1/2" thru 2". Maximum pressure setting is500 psig, minimum pressure setting is 10 psig. This valve is available with a screwed cap, packed lever, plain lever and gag. Unless otherwise specified, thevalve is shipped with a screwed cap. The 2" 1982 valve can be used for all service media except steam service above 100 psig.

Scope of Design

StandardConnections

INLET OUTLET

.121

.216

.332

.857

1.399

Male FemaleThreaded Threaded





50 psig

50 psig

50 psig

50 psig

50 psig

ValveType

500 psig to 400°F (204.4°C)

500 psig to 800°F (426.6°C)

500 psig to 400°F (204.4°C)

500 psig to 800°F (426.6°C)

500 psig to 400°F (204.4°C)

500 psig to 800°F (426.6°C)

500 psig to 400°F (204.4°C)

500 psig to 800°F (426.6°C)

500 psig to 400°F (204.4°C)

500 psig to 800°F (426.6°C)

Inlet Pressure & Temperature Limits

Actual (ASME)Orifice Area

(in2)

Back PressureLimit

Valve Size(in)

1982c

1982t

1982c

1982t

1982c

1982t

1982c

1982t

1982c

1982t

1/2 x 3/4

3/4 x 1

1 x 1-1/2

1-1/2 x 2

2 x 2-1/2

1982Materials

1982 (SRV-1/Q2.02)1982.3

Materials

1

3

4

6

7

8

9

10

11

12

13

14

15

8

5

2

1

23456

789

10

1112131415

Part Material

Base1/2", 3/4", 1" 304 SS

1-1/2", 2" SA351 CF8 SSBonnet Gasket Soft Iron

Adjusting Ring Pin Gasket Soft IronAdjusting Ring Pin 416 SS

Adjusting Ring 316 SSDisc Assembly

Disc Collar 304 SSDisc Holder 304 SS

Disc 304 SSDisc Retainer PH15-7 MO SS

Guide 410 SSSpring Washer Carbon Steel (Phosphated)

Bonnet SA216 WCC Carbon Steel (Phospated)Spring1982c Alloy Steel (Phosphated)1982 t Inconel X-750

Cap Gasket Soft IronAdjusting Screw Locknut Carbon Steel (Phosphated)

Adjusting Screw 416 SSSpindle Carbon Steel (Phosphated)

Screwed Cap Carbon Steel (Phosphated)

1982Materials


Cap w/ Gag

29

30

31

PlainLever

19

17

18

20

16

PackedLever

22

25

23

24

16171819202122232425262728293031

Part

Plain Cap Malleable IronRelease Locknut Carbon Steel

Release Nut 410/416 SSLever Pin Carbon Steel

Plain Lever Malleable IronCap Screw Carbon SteelPacked Cap Carbon Steel (Phosphated)Packed Lever Malleable Iron

O-Ring VitonBushing 416 SS

Cam Shaft 410 SSDrive Stud Carbon Steel (Nickel Plated)

Lever Gasket Soft IronGag Carbon Steel

Sealing Plug Carbon SteelSealing Plug Gasket Soft Iron

Material

21

27

2628


1982 (SRV-1/Q2.02)1982.5

Dimensions & Weights

A ± 1/16" ± 1.6 mm

C

B ± 1/16"± 1.6 mm

2 - 5/8" 66.7 mm

G

F

D

E

C




Size & Type A B C DInlet x Outlet

1/2 MNPT x 3/4 FNPT3/4 MNPT x 1 FNPT

1 MNPT x 1-1/2 FNPT1-1/2 MNPT x 2 FNPT2 MNPT x 2-1/2 FNPT

1/2 - 19823/4 - 1982

1 - 19821-1/2 - 1982

2 - 1982

2 - 5/82 - 3/43 - 1/43 - 7/84 - 3/8

1- 1/41- 7/161- 7/82 - 5/83 - 1/4

7 - 1/87 - 1/29 - 1/8

1214 - 1/16

7 - 1/47 - 5/89 - 1/811 - 7/813 - 7/8

1 - 3/81 - 3/82 - 1/8

3 - 11/163 - 11/16

E

2 - 3/42 - 3/44 - 5/8

5 - 13/165 - 13/16

F

2 - 3/82 - 3/83 - 1/24 - 3/44 - 3/4

G

2.23.05.012.018.5

Approx.Weight


1982 Series ValvesMetric Dimensions (mm) and Weights (kg)

Size & Type A B C DInlet x Outlet

1/2 MNPT x 3/4 FNPT3/4 MNPT x 1 FNPT

1 MNPT x 1-1/2 FNPT1-1/2 MNPT x 2 FNPT2 MNPT x 2-1/2 FNPT

1/2 - 19823/4 - 1982

1 - 19821-1/2 - 1982

2 - 1982

66.769.982.698.4111.1

31.836.547.666.782.6

181.0190.5231.8304.8357.2

184.2193.7231.8301.6352.4

34.934.954.093.693.6

E

69.869.8117.5147.6147.6

F

60.360.388.9120.7120.7

G

1.01.42.35.48.4

Approx.Weight

1982Capacities

1982 (SRV-1/Q2.02)1982.7

Air & Steam

Capacities

1982 Valve Orifice Capacities for Air & Steam (USCS Units)ASME B & PVC, Section VIII

Set Pressure plus 10% overpressureor 3 psig, whichever is greater

Valve Size / Orifice Area (Sq. In.)

SCFM Air @ 60°F (15°C) Pounds of Saturated Steam Per Hour

Set Press.(psig)

152030405060708090100120140160180200220240260280300320340360380400420440460480500

1/2"(0.121)

62719011113215317419521523627832036240344548752957161265469673877982186390594698810301072

3/4"(0.216)

1101271611982362733103483854224975716467217958709441019109311681243131713921466154116151690176518391914

1"(0.332)

17019624830536342047753559264976487899311081222133714521566168117951910202521392254236924832598271228272942

1-1/2"(0.857)

4395076417899371085123313811529167719722268256428603156345237484044434046354931522755235819611564116707700272987594

2"(1.399)

717827104712881530177120132254249627373220370341864669515256356118660170847567805085339016949999821046510948114311191412397

1/2"(0.121)

174200254312371429488547605664781898101611331250136714841602171918361953207021882305242225392657277428913008

3/4"(0.216)

3113584535586627678729461081118613951604181320222232244126502859306932783487369639064115432445334743495251615370

1"(0.332)

47855169785810181179134015011662182221442466278731093431375240744395471750395360568260036325664769687290761279338255

1-1/2"(0.857)

12331422180022152630304534603875429047055535636671968026885696861051611347121771300713837146671549816328171581798818818196492047921309

2"(1.399)

2014232229383616429349715648632670047681



Water

Capacities

1982 LS Valve Orifice Capacities for Water (USCS Units)


Set Pressure Plus 10% overpressureor 3 psig, whichever is greater,

0 psig back pressue

1/2"(0.121)

14.7916.7120.0223.1225.8528.3130.5832.6934.6836.5540.0443.2546.2449.0451.7054.2256.6358.9461.1763.3165.3967.4069.3671.2673.1174.9176.6878.4080.0981.74

3/4"(0.216)

26.4029.8435.7441.2746.1450.5554.5958.3661.9065.2571.4877.2182.5487.5592.2896.79101.09105.22109.19113.02116.73120.32123.81127.20130.51133.73136.88139.95142.96145.91

1"(0.332)

40.5745.8654.9363.4370.9277.6983.9189.7195.15100.30109.87118.67126.87134.56141.84148.76155.38161.72167.83173.72179.42184.94190.30195.51200.59205.55210.38215.11219.74224.27

1-1/2"(0.857)

104.73118.39141.80163.74183.07200.54216.61231.57245.61258.90283.61306.33327.48347.35366.14384.01401.08417.46433.22448.43463.13477.39491.23504.69517.80530.58543.07555.28567.22578.92

2"(1.399)

170.96193.26231.49267.30298.85327.37353.60378.02400.95422.64462.97500.07534.60567.03597.70626.87654.75681.48707.21732.03756.03779.30801.90823.87845.27866.15886.53906.45925.95945.04

Set Press.(psig)

152030405060708090100120140160180200220240260280300320340360380400420440460480500

GPM Water @ 70°F at 10% Overpressure

Valve Size / Orifice Area (Sq. In.)

In-house Review

19000Table of Contents

19000 (SRV-1/Q2.02)19000.1

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.219000 Scope of Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.3Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.5

19000 DA (Soft Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.719000 MBP (Back Pressure Compensation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.9

Corrosive Service Material Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.11Dimensions & Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.15

Threaded Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.15Socket Weld Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.17Flanged Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.19

Pressure Temperature Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.23O-Ring Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.23Pressure Temperature Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.24

Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.26Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.26Steam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.27Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19000.28

19000 Series Threaded Safety Relief Valve

19000Scope of Design


The 19000 Series valves are designed and manufactured in compliance with ASME B & PVC, Section VIII and Section III (Class I, II and III) as well as beingCEN compliant to the European proposed standards for safety valves. Seat tightness, blowdown and capacity on all types of media meets the industry needsfor overpressure protection in chemical, petrochemical, refinery, power generation (nuclear and conventional) and other commercial applications.

Introduction

Valve Closed

General InformationThe 19000 Series threaded safety relief valve has 316 stainless steel trim as standard material.Reliable performance and easy maintenance procedures are characteristics of this valve (whenproperly installed in suitable applications for its design).The 19000 Series valves has three pressure classes, 19000L (5 through 290 psig), 19000M(291 through 2000 psig), and 19000H (2001 psig and up). Standard 19000 parts are used forboth liquid applications and gas applications. It is designed for short blowdown on all medias,typically less than 10%.All 19000 Series valves have fixed blowdown. This means that the parts are designed so that thereis no blowdown adjustment required when setting or testing the valve.

Design Optionsa. O-Ring seat seal valves

All 19000 Series valves are available with an O-Ring seat seal, as a design option. Thisoptional design provides a bubble tightness in excess of 97% of the valve set pressure,in order to meet application requirements beyond the normal capabilities of metal tometal seat valves. 19000 Series valves with the O-Ring seat seal option are identifiedby the suffix DA (e.g., 1-19096L-DA).

b. Lifting Levers, Caps and GagsAll 19000 Series valves are designed so that field conversion from the standardscrewed cap to a plain lifting lever cap, or to a packed lifting lever cap (or vice versa)does not require valve assembly during resetting. The lifting lever option is designed toopen the valve at 75% of the valve set pressure, in compliance with ASME B & PVC,Section VIII. Further, all available 19000 Series valve caps may be equipped with agag, upon customer request.

c. Inlet/Outlet ConnectionsAll 19000 Series valves can be provided by CONSOLIDATED with flanges, threaded orsocket weld inlet/outlet connections upon customer request.

19000-2


19000 (SRV-1/Q2.02)19000.3

This product is normally supplied with threaded inlet and outletconnections. Socket weld or flanged end connections areavailable as well.Product type designations change depending on connectionsizes, orifice sizes, pressure range, and whether connections aremale or female.Unless otherwise specified, the valve is always supplied with ascrewed cap. The exception to this would be where ASME requireslevers for steam, air and water service over 140°F (60°C).Springs of precipitation hardened stainless steel are specifiedfor -75°F to 800°F (-59°C to 426.6°C) and the valves carrya “c” suffix in that case. Inconel springs are used fortemperatures 801°F to 1100°F (427.2°C to 593.3°C) andthe valve carries a “t” suffix.When selecting valves for back pressure applications, thefollowing limits apply.

• Constant back pressure: 400 psig maximum• Variable back pressure (superimposed or built - up):

400 psig or 10% of set pressure whichever is smaller.

Product variations consist of:• 19000SG - Sour Gas Trim• 19000DA - Soft Seat• 19000MBP - Back Pressure Compensation

Product material variations include:• 316 Stainless Steel• Monel• Hastelloy• Alloy 20

Pressure/Temperature ratings may varyfrom those for standard valves when other

than standard materials are selected.Consult factory if you need assistance.

19000 Standard Valves

1/2 - MNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT

3/4 - FNPT x 1 - FNPT

1 - MNPT x 1 - FNPT

1/2 - MNPT x 1 - FNPT



1 - MNPT x 1 - FNPT




1 - MNPT x 1 - FNPT




1 - MNPT x 1 - FNPT




1 - MNPT x 1 - FNPT




1 - MNPT x 1 - FNPT



1 - MNPT x 1 - FNPT


1 - MNPT x 1-1/2 - FNPT

1 - FNPT x 1-1/2 - FNPT

1 - MNPT x 1-1/2 - FNPT

1 - FNPT x 1-1/2 - FNPT

1 - FNPT x 1-1/2 - FNPT

1-1/2 - FNPT x 2 - FNPT

1-1/2 - FNPT x 2 - FNPT

2 - FNPT x 2-1/2 - FNPT

2 - FNPT x 2-1/2 - FNPT

1/2-19096L

3/4-19096L

1-19096L

1/2-19096M

3/4-19096M

1-19096M

3/4-19096H

1/2-19096MBP

3/4-19096MBP

1-19096MBP

1/2-19110L

3/4-19110L

1-19110L

1/2-19110M

3/4-19110M

1-19110M

3/4-19110H

3/4-19126L

1-19126L

3/4-19126M

1-19126M

3/4-19126H

1-19226L

1-19226M

1-19226H

1 1/2-19357L

1 1/2-19357M

2-19567L

2-19567M

5 to 290

291 to 2000

2001 to 5000

50 to 2000

5 to 290

291 to 2000

2001 to 5000

5 to 290

291 to 2000

2001 to 8000

5 to 290

291 to 2000

2001 to 6400

5 to 290

291 to 1500

5 to 290

291 to 1000

.096 sq. in.

.096 sq. in.

.110 sq. in.

.126 sq. in.

.226 sq. in.

.357 sq. in.

.567 sq. in.

Orifice Pressure Range(psig)

StandardValve Type

Standard Connections(in.)

61.9 sq. mm

61.9 sq. mm

70.9 sq. mm

81.3 sq. mm

145.8 sq. mm

230.3 sq. mm

365.8 sq. mm



19000-2 Male NPT Inlet19096L, 19110L, 19126L, 19226L,

19096M, 19110M, 19126M, 19226M

19000-2 Female NPT Inlet19096L, 19110L, 19126L, 19226L, 19357L, 19567L,

19096M, 19110M, 19126M, 19226M, 19357M,19567M, 19096H, 19110H, 19126H, 19226H

19000SG (Sour Gas)The standard 19000 valve has component materials selected whichcomply with NACE MR-01-75 requirements (except the valve spring).To fully comply with MR-01-75, utilize the standard valve and specify anInconel X750 spring.When service temperature exceeds 250°F an Inconel X750 disc will bethe standard component material meeting the requirements of MR-01-75.Under 250°F the standard component material for the disc is 316SS.

The Inconel X750 disc, Inconel X750 disc holder, Stellite® faced baseand Inconel X750 spindle used in high pressure valves will meet therequirements of MR-01-75 when supplied with an Inconel X750 spring.

19000 Standard Valves

19000Materials

19000 (SRV-1/Q2.02)19000.5

Threaded End ConnectionExtension, flange and nipples for flanged and socket-weld connections are not shown.

Materials

1

6

9

10

14

7

8

5

7

2

4

3

15

19000-2

19000Materials


Packed Lever

Plain Lever

Materials

Part Material

* Supplied for steam service above 251°F (121.7°C)

26

1 Base L & M 316SSBase H 316 SS/Stellite Hardfaced Seat

2 Disc L & M 316SSDisc L & M (Steam)* 616SS

Disc H Inconel X7503 Disc Holder 316SS4 Guide 316SS5 Bonnet SA216 WCC Carbon Steel (phosphated)6 Spindle L & M 316SS

Spindle H Inconel X7507 Spring Washer Carbon Steel (phosphated)8 Spring 19000c 17-7 PH SS

Spring 19000t Inconel X7509 Adjusting Screw 316SS

10 Adjusting Screw Locknut 316SS11 Gag Bolt Carbon Steel12 Sealing Plug Carbon Steel13 Sealing Plug Gasket Soft Iron14 Cap Gasket Soft Iron15 Screwed Cap Carbon Steel (phosphated)16 Packed Cap Carbon Steel (phosphated)17 Cam Shaft 410SS18 Bushing 416SS19 Bushing Gasket Soft Iron20 Lever (Packed) Malleable Iron21 Drive Pin Steel (Ni-Plated)22 O-Ring Viton 7023 Release Nut Carbon Steel24 Release Lock Nut Carbon Steel25 Plain Lever Cap Malleable Iron26 Lifting Lever (Plain) Malleable Iron27 Cap Screw Carbon Steel28 Lever Pin Carbon Steel

Sour Gas (SG) or NACE applicationsThe 19000 valve materials are standard except for the spring,which will be Inconel X750, and for service temperatures thatexceed 250°F, an Inconel X750 disc will be provided.

Cap with Gag

12

1311

22

21

17

18

19

20

24

23

14

16

23

28

27

24

25

19000DAScope of Design

19000 (SRV-1/Q2.02)19000.7

TightnessCONSOLIDATED O-Ring seat valves are bubble tight at 97% of setpressures over 100 psig.

CONSOLIDATED O-Ring seat seals provide positive seat tightness at servicepressures closer to the set pressure than is possible with metal - to -metalseats assuring continuous, trouble - free service, and complete valveclosure after numerous “pops”.

ApplicationsThe O-Ring design can be used for improved product performance in thesame manner as that stated for the 1900 Flanged Series.

Features• Leak tight seats• Tight seats at high operating pressures• Simple replacement of soft seat• Large selection of soft seat materials• Soft seats are in standard O-Ring sizes• Proven seat design

Benefits• Potential loss of system pressure and process media reduced• Maximizes process efficiency and product output• Reduces maintenance costs• Suitable for varied process applications• Replacement seats readily available• Dependable performance

19000 Soft Seats (DA)

Set Pressure(psig)


90%92%94%97%

5 to 3031 to 5051 to 100

101 to Max rating of valve

6

Percent of set pressure (popping pressure)at which valve will be bubble tight on air.

Part Material

Disc Holder 19000LDisc Holder 19000M & H

O-Ring Seat SealBase

O-Ring Retainer 19000L & MO-Ring Retainer 19000H

Retainer LockscrewSpindle 19000L

Spindle 19000M & H

1

234

56

316SSInconel X750

Select316SS316SS


Inconel X750

1

2

3

4

5

Material Temperature Limits (°F)

NitrileEthylene/Propylene

Fluoro-CarbonFluoro-Silicone

NeopreneSiliconeTeflon

-45 to +350°-70 to +500°-15 to +400°-100 to +350°-45 to +300°-65 to +437°-300 to +505°

Soft Seat MaterialTemperature Limits (°F)

NOTE: Contact factory for other O-Ring materialsand the respective temperature limitations.

Sour Gas (SG) or NACE applicationsThe 19000(DA) valve materials are standard except for the spring which will be Inconel X750.

19000DAScope of Design


Operation and Performance

Valve in Closed Position• 90% of set pressure

Metal seat contains mediaNo leakage - bubble tight

Valve Returns to Closed Position• 90% of set pressure

Metal seat contains mediaNo leakage - bubble tight

• Seat tightness maintained at pressuresabove 90% after initial closure

Valve Flowing• Full lift• Flowing rated capacity• O-Ring is protected from blowouts as the encapsulating

retainer prevents the O-Ring from being pulled from its seatby the high velocity, low pressure discharge inside the valve.

Valve at Greater than 90% of set pressure• Metal seats separate• System pressure acts on O-Ring, pressure forces the O-Ring

against the lip of the nozzle and curved recess of the discholder. As the pressure within the valves rises to the set point,the O-Ring is pressed tightly against the nozzle to maintainmaximum sealing force until break-away pressure is reached.

• Bubble tight seat to 97% of set pressure

Set PressurePSIG


5 to 3031 to 5051 to 100100 to max

rating of valve

90%92%94%

97%

19096MBPScope of Design

19000 (SRV-1/Q2.02)19000.9

The 19096MBP Series balanced design safety relief valve provides back pressure compensation characteristics that meet the needs of various plantoperating systems in today's industrial markets. This design is in compliance with ASME B & PVC, Section VIII requirements. The 19096MBP'sversatile design is for use in both compressible and incompressible services.

19096MBP

Scope of Design

Inlet Sizes

Outlet SizesOrifice Size

Set Pressure RangeTemperature Range

CertificationBackpressure

1/2" through 1" in either threaded, socket weld or1" flanged design

1" threaded, socket weld or flanged design.096 sq. in. (61.9 sq. mm)

50 psig to 2000 psig-60°F to 600°F (-51°C to 315°C)

ASME B & PVC, Section VIII400 psig - Variable and/or Constant

19096MBP Performance Criteria

Typical Blowdown as apercent of set pressure

Allowable total Backpressure(The sum of the variable

and constant backpressure,superimposed and built-up).

Seat TightnessBubble Tight


3/4 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT

1 - MNPT x 1 - FNPT

1/2-19096M-BP

3/4-19096M-BP

1-19096M-BP

50 to 2000.096 sq. in.

(61.9 sq. mm)

Orifice Pressure Range(psig)

StandardValve Type (in.)

Standard Connections(in.)

Material Temperature Limits (°F)

NitrileEthylene/Propylene

Fluoro-CarbonFluoro-Silicone

NeopreneSiliconeTeflon

-45 to +350°-70 to +500°-15 to +400°-100 to +350°-45 to +300°-65 to +437°-300 to +505°

Soft Seat MaterialTemperature Limits (°F)

NOTE: Contact factory for other O-Ring materials and therespective temperature limitations.

Liquid: 6% to 20%Gas: 3% to 16%

Liquid: 70% of Set Pressure

Gas: 50% of Set PressureTotal Backpressure for liquid or gas shall not exceed 400 psig

Set Pressure of 50 psig: 92%;51 psig to 100 psig: 94%;

101 psig to Maximum Rating: 97%

NOTE: Thermal Relief applications may be suppliedwith backpressure up to 90% of set pressure.

Features and BenefitsBlowdown performance is typically less than 7% on compressiblefluids and typically 15% for fixed blowdown on incompressibleapplications. This performance minimizes the loss of process fluidsduring an overpressure excursion and assists in the reduction ofoperating costs.An O-Ring seat design provides for leak-tight seals during normalsystem operation and after cycling during a pressure-relieving mode.Media loss due to seat leakage is eliminated, resulting in savings fromthe cost of lost product.A simple design that is easily maintained contributes to reducedmaintenance costs and parts inventory.

Versatile Service Conditions• Compressible and incompressible media• Upper spring chamber not exposed to process media• Corrosion resistant stainless steel trim• Special alloy construction available

Increased Operating Efficiency• Soft seat design provides maximum seat tightness• Reduces product loss due to leakage• Consistent fixed blowdown

19096MBPMaterials

20

8

14

15

19

10

11

7A

7B10

12

913

5

2

4

3

6

1

Materials

23

222126

25

24

1617

18

Part Material

* Backup Plate and Spindle O-Ring material will be the same as the O-Ringmaterial selected for Seat O-Ring.

1 Base 316SS2 O-Ring Retainer 316SS3 Seat O-Ring (See O-Ring Seal Selection Table*)4 Retainer Lockscrew 316SS5 Disc Holder Inconel X7506 Guide 316SS

7A Bonnet Top SA105 Carbon Steel (Phosphated)7B Bonnet Bottom SA105 Carbon Steel (Phosphated)8 Spindle Inconel X7509 Spindle O-Ring (See O-Ring Selection*)

10 Spring Washer Carbon Steel (Phosphated)11 Spring

19096c-BP 17-7 PH SS19096t-BP Inconel X750

12 Backup Plate 316SS13 Backup Plate O-Ring (See O-Ring Selection*)14 Adjusting Screw 316SS15 Adj. Screw Locknut 316SS16 Gag Bolt Carbon Steel17 Sealing Plug Carbon Steel18 Sealing Plug Gasket Soft Iron19 Cap Gasket Soft Iron20 Screwed Cap Carbon Steel (Phosphated)21 Release Nut Carbon Steel22 Release Locknut Carbon Steel23 Plain Lever Cap Malleable Iron24 Lifting Lever Malleable Iron25 Cap Screw Carbon Steel26 Lever Pin Carbon Steel

19000.10Consolidated Spring Loaded Safety Relief Valves 19000 (SRV-1/Q2.02)

19096MBP Plain Lever Cap with Gag

Sour Gas (SG) or NACE applicationsThe 19096MBP valve materials are standard except for the spring,which will be Inconel X750.

19000Corrosive Service Materials

19000 (SRV-1/Q2.02)19000.11

Part Standard Valve 316 Stainless Steel VariationsS2 S3 S4 C1

Base 19000LBase 19000MBase 19000H

Inlet NippleOutlet NippleInlet ExtensionInlet FlangeOutlet ExtensionOutlet FlangeDisc 19000 L & MDisc 19000 L & M (Steam)*Disc 19000HO-Ring Retainer 19000LO-Ring Retainer 19000MO-Ring Retainer 19000HRetainer Lock ScrewO-Ring Disc Holder 19000LO-Ring Disc Holder 19000MO-Ring Disc Holder 19000HMS Disc Holder 19000LMS Disc Holder 19000MMS Disc Holder 19000HO-Ring Seat SealGuideBonnetO-Ring Spindle 19000LO-Ring Spindle 19000MO-Ring Spindle 19000HMS Spindle 19000LMS Spindle 19000MMS Spindle 19000HSpring WasherSpring 19000LcSpring 19000LtSpring 19000McSpring 19000MtSpring 19000HcSpring 19000HtAdjusting ScrewAdj. Screw Lock NutCap GasketScrewed CapPacked CapCam ShaftBushingBushing GasketPacked Lifting LeverDrive PinO-Ring (Packed Cap)Release NutRelease Lock NutPlain Lever CapPlain Lifting LeverCap ScrewLever PinGag BoltSealing PlugSealing Plug GasketBottom Bonnet 19096MBPTop Bonnet 19096MBPBackup Plate 19096MBPBackup Plate O-Ring 19096MBPSpindle O-Ring 19096MBP

SA479 Type 316SSSA479 Type 316SSSA479 Type 316SS

Stellite Seats316SS

Carbon Steel316SS

Carbon Steel316SS

Carbon Steel316SS616SS



Inconel X750Inconel X750

316SS316SS316SSSelect316SS

SA216, WCC CS316SS


316SS316SS

Inconel X750Carbon Steel

17-7PHInconel X750

17-7PHInconel X750

17-7PHInconel X750

316SS316SS

Soft IronCarbon SteelCarbon Steel

410SS416SS

Soft IronMalleable Iron

Steel (Ni-Plated)Viton 70

Carbon SteelCarbon Steel

Malleable IronMalleable IronCarbon SteelCarbon SteelCarbon SteelCarbon Steel

Soft IronSA105, CSSA105, CS

316SSSame as O-Ring SeatSame as O-Ring Seat


Stellite Seats316SS

Carbon Steel316SS

Carbon Steel316SS

Carbon Steel316SS616SS





SA216, WCC CS316SS


316SS316SS


17-7PHInconel X750

17-7PHInconel X750

17-7PHInconel X750

316SS316SS


410SS416SS








Stellite Seats316SS316SS316SS316SS316SS316SS316SS616SS





SA351, CF8M316SS


316SS316SS


17-7PHInconel X750

17-7PHInconel X750

17-7PHInconel X750

316SS316SSMonel316SS316SS316SS316SSMonel316SS303SS

Viton 70316SS316SS316SS316SS316SS316SS316SS316SSMonel

SA316, SSSA316, SS








SA352, LCC316SS


316SS316SS

Inconel X750316SS17-7PH

Inconel X75017-7PH

Inconel X75017-7PH


Soft Iron316SS316SS410SS416SS


Steel (Ni-Plated)EPR-70



Soft IronSA316, SSSA316, SS








SA351, CF8M316SS


316SS316SS


Inconel X750Inconel X750Inconel X750Inconel X750Inconel X750

316SS316SSMonel316SS316SS316SS316SSMonel316SS303SS

Viton 70316SS316SS316SS316SS316SS316SS316SS316SSMonel

SA316, SSSA316, SS

316 SSSame as O-Ring SeatSame as O-Ring Seat

Standard and 316 Stainless Steel Variations




Part MonelM1 MB M2 M3 M4MonelMonel

Inconel 625Stellite Seats

Monel316SSMonel

Carbon Steel316SS

Carbon SteelMonel


MonelMonel

Inconel X750MonelMonel



SA216, WCCCS

316SSInconel X750Inconel X750

316SS316SS


17-7 PHInconel X750

17-7 PHInconel X750

17-7 PHInconel X750

316SS316SS


410SS416SS






Same as O-Ring SeatSame as O-Ring Seat

Monel Variations


Inlet NippleOutlet NippleInlet ExtensionInlet FlangeOutlet ExtensionOutlet FlangeDisc 19000 L & MDisc 19000 L & M (Steam)*Disc 19000HO-Ring Retainer 19000LO-Ring Retainer 19000MO-Ring Retainer 19000HRetainer Lock ScrewO-Ring Disc Holder 19000LO-Ring Disc Holder 19000MO-Ring Disc Holder 19000HMS Disc Holder 19000LMS Disc Holder 19000MMS Disc Holder 19000HO-Ring Seat SealGuideBonnet

O-Ring Spindle 19000LO-Ring Spindle 19000MO-Ring Spindle 19000HMS Spindle 19000LMS Spindle 19000MMS Spindle 19000HSpring WasherSpring 19000LcSpring 19000LtSpring 19000McSpring 19000MtSpring 19000HcSpring 19000HtAdjusting ScrewAdj. Screw Lock NutCap GasketScrewed CapPacked CapCam ShaftBushingBushing GasketPacked Lifting LeverDrive PinO-Ring (Packed Cap)Release NutRelease Lock NutPlain Lever CapPlain Lifting LeverCap ScrewLever PinGag BoltSealing PlugSealing Plug GasketBottom Bonnet 19096MBPTop Bonnet 19096MBPBackup Plate 19096MBPBackup Plate O-Ring 19096MBPSpindle O-Ring 19096MBP

MonelMonel


Monel316SSMonel

Carbon Steel316SS

Carbon SteelMonel


MonelMonel



MonelMonelMonelSelectMonel

SA216, WCCCS

MonelInconel X750Inconel X750

MonelMonel


17-7 PHInconel X750

17-7 PHInconel X750

17-7 PHInconel X750

316SS316SS


410SS416SS






MonelSame as O-Ring SeatSame as O-Ring Seat

MonelMonel


Monel316SSMonel

Carbon Steel316SS

Carbon SteelMonel


MonelMonel




SA216, WCCCS


316SS316SS


17-7 PHInconel X750

17-7 PHInconel X750

17-7 PHInconel X750

316SS316SS


410SS416SS






MonelSame as O-Ring SeatSame as O-Ring Seat

MonelMonel


MonelMonelMonelMonelMonelMonelMonel


MonelMonel




A494 M35-1 NickelCopper Alloy


MonelMonel

Inconel X750Monel

Inconel X750Inconel X750Inconel X750Inconel X750Inconel X750Inconel X750

MonelMonelMonelMonel

-------------

316SSMonelMonelMonelMonelMonel


MonelMonel


MonelMonelMonelMonelMonelMonelMonel


MonelMonel




A494 M35-1 NickelCopper Alloy


MonelMonel


17-7 PHInconel X750

17-7 PHInconel X750

17-7 PHInconel X750

MonelMonelMonelMonel

-------------

316SSMonelMonelMonelMonelMonel




19000 (SRV-1/Q2.02)19000.13

Part HastelloyH1 H2 H3 H4

Hastelloy Variations


Inlet NippleOutlet NippleInlet ExtensionInlet FlangeOutlet ExtensionOutlet FlangeDisc 19000 L & MDisc 19000 L & M (Steam)*Disc 19000HO-Ring Retainer 19000LO-Ring Retainer 19000MO-Ring Retainer 19000HRetainer Lock ScrewO-Ring Disc Holder 19000LO-Ring Disc Holder 19000MO-Ring Disc Holder 19000HMS Disc Holder 19000LMS Disc Holder 19000MMS Disc Holder 19000HO-Ring Seat SealGuideBonnet

O-Ring Spindle 19000LO-Ring Spindle 19000MO-Ring Spindle 19000HMS Spindle 19000LMS Spindle 19000MMS Spindle 19000HSpring WasherSpring 19000LcSpring 19000LtSpring 19000McSpring 19000MtSpring 19000HcSpring 19000HtAdjusting ScrewAdj. Screw Lock NutCap GasketScrewed CapPacked CapCam ShaftBushingBushing GasketPacked Lifting LeverDrive PinO-Ring (Packed Cap)Release NutRelease Lock NutPlain Lever CapPlain Lifting LeverCap ScrewLever PinGag BoltSealing PlugSealing Plug GasketBottom Bonnet 19096MBPTop Bonnet 19096MBPBackup Plate 19096MBPBackup Plate O-Ring 19096MBPSpindle O-Ring 19096MBP

HastelloyHastelloy


Hastelloy316SS

HastelloyCarbon Steel

316SSCarbon Steel

HastelloyInconel X750Inconel X750

HastelloyHastelloy

Inconel X750HastelloyHastelloy



SA216, WCCCS


316SS316SS


17-7 PHInconel X750

17-7 PHInconel X750

17-7 PHInconel X750

316SS316SS


410SS416SS







HastelloyHastelloy


HastelloyHastelloyHastelloyHastelloyHastelloyHastelloyHastelloy


HastelloyHastelloy



Hastelloy Hastelloy Hastelloy

SelectHastelloy

SA494 CW12 MWNickel AlloyHastelloy


Hastelloy Hastelloy


17-7 PHInconel X750

17-7 PHInconel X-750

17-7 PHInconel X750

HastelloyHastelloy

MonelHastelloy

-------------

316SSHastelloy

MonelHastelloyHastelloyHastelloy


HastelloyHastelloy


HastelloyHastelloyHastelloyHastelloyHastelloyHastelloyHastelloy


HastelloyHastelloy




SelectHastelloy

SA494 CW12 MWNickel AlloyHastelloy


Hastelloy Hastelloy

Inconel X750Hastelloy Hastelloy


HastelloyHastelloy

MonelHastelloy

-------------

316SSHastelloy

Monel HastelloyHastelloyHastelloy


HastelloyHastelloy


Hastelloy316SS

HastelloyCarbon Steel

316SSCarbon Steel


HastelloyHastelloy




SelectHastelloy

SA216, WCCCS


Hastelloy Hastelloy


17-7 PHInconel X750

17-7 PHInconel X-750

17-7 PHInconel X750

316SS316SS


410SS416SS





Soft IronSA105, CSSA105, CSHastelloy





Part Alloy 20A1 A2 A3 A4

Alloy 20 Variations


Inlet NippleOutlet NippleInlet ExtensionInlet FlangeOutlet ExtensionOutlet FlangeDisc 19000 L & MDisc 19000 L & M (Steam)*Disc 19000HO-Ring Retainer 19000LO-Ring Retainer 19000MO-Ring Retainer 19000HRetainer Lock ScrewO-Ring Disc Holder 19000LO-Ring Disc Holder 19000MO-Ring Disc Holder 19000HMS Disc Holder 19000LMS Disc Holder 19000MMS Disc Holder 19000HO-Ring Seat SealGuideBonnetO-Ring Spindle 19000LO-Ring Spindle 19000MO-Ring Spindle 19000HMS Spindle 19000LMS Spindle 19000MMS Spindle 19000HSpring WasherSpring 19000LcSpring 19000LtSpring 19000McSpring 19000MtSpring 19000HcSpring 19000HtAdjusting ScrewAdj. Screw Lock NutCap GasketScrewed CapPacked CapCam ShaftBushingBushing GasketPacked Lifting LeverDrive PinO-Ring (Packed Cap)Release NutRelease Lock NutPlain Lever CapPlain Lifting LeverCap ScrewLever PinGag BoltSealing PlugSealing Plug GasketBottom Bonnet 19096MBPTop Bonnet 19096MBPBackup Plate 19096MBPBackup Plate O-Ring 19096MBPSpindle O-Ring 19096MBP

Alloy 20Alloy 20


Alloy 20Alloy 20Alloy 20Alloy 20Alloy 20Alloy 20Alloy 20


Alloy 20Alloy 20

Inconel X750Alloy 20Alloy 20


Alloy 20Alloy 20Alloy 20Select

Alloy 20SA351 CN7M

Alloy 20Inconel X750Inconel X750

Alloy 20Alloy 20


17-7 PHInconel X750

17-7 PHInconel X750

17-7 PHInconel X750

Alloy 20Alloy 20Monel

Alloy 20-------------

316SSAlloy 20Monel

Alloy 20Alloy 20Alloy 20


Alloy 20Alloy 20


Alloy 20316SSAlloy 20

Carbon Steel316SS

Carbon SteelAlloy 20


Alloy 20Alloy 20




Alloy 20SA216, WCC CS


Alloy 20Alloy 20


17-7 PHInconel X750

17-7 PHInconel X750

17-7 PHInconel X750

316SS316SS


410SS416SS





Soft IronSA105SA105

Alloy 20Same as O-Ring SeatSame as O-Ring Seat

Alloy 20Alloy 20


Alloy 20Alloy 20Alloy 20Alloy 20Alloy 20Alloy 20Alloy 20


Alloy 20Alloy 20




Alloy 20SA351 CN7M


Alloy 20Alloy 20



Alloy 20Alloy 20Monel

Alloy 20-------------

316SSAlloy 20Monel

Alloy 20Alloy 20Alloy 20


Alloy 20Alloy 20


Alloy 20316SSAlloy 20

Carbon Steel316SS

Carbon SteelAlloy 20


Alloy 20Alloy 20




SA216, WCC CS316SS


316SS316SS


17-7 PHInconel X750

17-7 PHInconel X750

17-7 PHInconel X750

316SS316SS


410SS416SS





Soft IronSA105SA105

Alloy 20Same as O-Ring SeatSame as O-Ring Seat



19000 (SRV-1/Q2.02)19000.15

Threaded Connections (Inches & Pounds)

3/4 - FNPT x 1 - FNPT1/2 - MNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT

1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT1/2 - MNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT

1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT1/2 - MNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT


1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT

1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT

1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT

1 - FNPT x 1-1/2 - FNPT1- MNPT x 1-1/2 - FNPT1 - FNPT x 1-1/2 - FNPT1 - MNPT x 1-1/2 - FNPT1 - FNPT x 1-1/2 - FNPT1-1/2 - FNPT x 2 - FNPT1-1/2 - FNPT x 2 - FNPT2 - FNPT x 2-1/2 - FNPT2 - FNPT x 2-1/2 - FNPT

19096L19096L19096L19096L19096M19096M19096M19096M19096H19110L19110L19110L19110L19110M19110M19110M19110M19110H19126L19126L19126L19126M19126M19126M19126H19226L19226L19226M19226M19226H19357L19357M19567L19567M

3-1/83-1/43-1/43-1/43-1/83-1/43-1/43-1/43-1/83-1/83-1/43-1/43-1/43-1/83-1/43-1/43-1/43-1/83-1/83-1/43-1/43-1/83-1/43-1/43-1/83-3/83-5/83-3/83-5/83-1/84-1/164-1/164-1/164-1/16

1-7/81-7/81-7/81-7/8

2222

2-3/81-7/81-7/81-7/81-7/8

2222

2-3/81-7/81-7/81-7/8

222

3-1/82-1/42-1/42-3/82-3/83-1/83-1/83-1/83-1/83-1/8

2 N/A2 N/A2 N/A2 N/A

2-9/16 3-3/42-9/16 3-3/42-9/16 3-3/42-9/16 3-3/43-1/8 N/A

2 N/A2 N/A2 N/A2 N/A

2-9/16 N/A2-9/16 N/A2-9/16 N/A2-9/16 N/A3-1/8 N/A

2 N/A2 N/A2 N/A

2-9/16 N/A2-9/16 N/A2-9/16 N/A4-5/8 N/A2-3/8 N/A2-3/8 N/A3-1/8 N/A3-1/8 N/A4-5/8 N/A3-5/8 N/A4-5/8 N/A3-5/8 N/A4-5/8 N/A

10-1/4 N/A10-3/8 N/A10-3/8 N/A10-3/8 N/A12-1/16 12-3/412-3/16 12-7/812-3/16 12-7/812-3/16 12-7/812-1/2 N/A10-1/4 N/A10-3/8 N/A10-3/8 N/A10-3/8 N/A12-1/16 N/A12-3/16 N/A12-3/16 N/A12-3/16 N/A12-1/2 N/A10-1/4 N/A10-3/8 N/A10-3/8 N/A12-1/16 N/A12-3/16 N/A12-3/16 N/A15-15/16 N/A11-3/8 N/A11-5/8 N/A12-3/4 N/A

13 N/A15-15/16 N/A15-1/16 N/A16-7/8 N/A15-1/16 N/A16-7/8 N/A

4-1/2 N/A4-3/4 N/A4-3/4 N/A4-3/4 N/A6-1/2 11-1/26-1/2 11-1/26-1/2 11-1/26-1/2 11-1/211-1/2 N/A4-1/2 N/A4-3/4 N/A4-3/4 N/A4-3/4 N/A6-1/2 N/A6-1/2 N/A6-1/2 N/A6-1/2 N/A11-1/2 N/A

5 N/A5-1/4 N/A5-1/4 N/A6-1/2 N/A6-1/2 N/A6-1/2 N/A

30 N/A6-1/2 N/A6-3/4 N/A11-1/2 N/A11-1/2 N/A

30 N/A18 N/A30 N/A19 N/A30 N/A

Size (in.) Type A B C19000 MBP

D19000 MBP

Approx. Weight19000 MBP

!C A U T I O NDo not seal weld inletand outlet connections.

19000 Threaded Connections

19096MBP Threaded Connections

The key to selecting the appropriate dimensions is to use the numbers in the columnnamed “Type”. The “Size” column defines the valve by inlet size and connectiontype, then by outlet size and connection type.

Example: 1/2 - MNPT x 1 - FNPT

Inlet size is 1/2" with a male NPT pipe thread and the outlet is 1" size with a femaleNPT pipe thread. “SW” indicates socket weld. “Flanged Connections” show size offlange and pressure rating.

CD

A

B

CD

A

B

NOTES: 1 ”USCS” Units refers to “U.S. Customary System” Units, the adoptedU.S. Standard formerly recognized as “English” Units.

2 Valves are provided with a male pipe threaded (MNPT) or a femalepipe threaded (FNPT) inlet connection as specified in the table below.



Threaded Connections (Millimeters & Kilograms)

3/4 - FNPT x 1 - FNPT1/2 - MNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT


1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT1/2 - MNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT


1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT

1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT3/4 - MNPT x 1 - FNPT

1 - MNPT x 1 - FNPT3/4 - FNPT x 1 - FNPT

1 - FNPT x 1-1/2 - FNPT1 - MNPT x 1-1/2 - FNPT1 - FNPT x 1-1/2 - FNPT1 - MNPT x 1-1/2 - FNPT1 - FNPT x 1-1/2 - FNPT1-1/2 - FNPT x 2 - FNPT1-1/2 - FNPT x 2 - FNPT2 - FNPT x 2-1/2 - FNPT2 - FNPT x 2-1/2 - FNPT

19096L19096L19096L19096L19096M19096M19096M19096M19096H19110L19110L19110L19110L19110M19110M19110M19110M19110H19126L19126L19126L19126M19126M19126M19126H19226L19226L19226M19226M19226H19357L19357M19567L19567M

79.482.682.682.679.482.682.682.679.479.482.682.682.679.482.682.682.679.479.482.682.679.482.682.679.485.792.185.792.179.4103.2103.2103.2103.2

47.647.647.647.650.850.850.850.860.347.647.647.647.650.850.850.850.860.347.647.647.650.850.850.879.457.257.260.360.379.479.479.479.479.4

50.8 N/A50.8 N/A50.8 N/A50.8 N/A65.1 95.365.1 95.365.1 95.365.1 95.379.37 N/A50.8 N/A50.8 N/A50.8 N/A50.8 N/A65.1 N/A65.1 N/A65.1 N/A65.1 N/A79.4 N/A50.8 N/A50.8 N/A50.8 N/A65.1 N/A65.1 N/A65.1 N/A117.5 N/A60.3 N/A60.3 N/A79.4 N/A79.4 N/A117.5 N/A92.08 N/A117.5 N/A92.08 N/A117.5 N/A



Size (mm) Type A B C19000 MBP

D19000 MBP

Approx. Weight19000 MBP

!C A U T I O NDo not seal weld inletand outlet connections.

19096MBP Threaded Connections

CD

A

B B

A

CD

19000 Threaded Connections


19000 (SRV-1/Q2.02)19000.17

Socket Weld Connections (Inches & Pounds)

1/2 - SW x 1 - SW3/4 - SW x 1 - SW

1 - SW x 1 - SW1/2 - SW x 1 - SW3/4 - SW x 1 - SW

1 - SW x 1 - SW3/4 - SW x 1 - SW1/2 - SW x 1 - SW3/4 - SW x 1 - SW



1 - SW x 1 - SW3/4 - SW x 1 - SW

1 - SW x 1 - SW3/4 - SW x 1 - SW

1 - SW x 1-1/2 - SW1 - SW x 1-1/2 - SW1 - SW x 1-1/2 - SW1-1/2 - SW x 2 - SW1-1/2 - SW x 2 - SW2 - SW x 2-1/2 - SW2 - SW x 2-1/2 - SW

19096L19096L19096L19096M19096M19096M19096H19110L19110L19110L19110M19110M19110M19110H19126L19126L19126M19126M19126H19226L19226M19226H19357L19357M19567L19567M

3-1/23-1/23-1/23-1/23-1/23-1/2

43-1/23-1/23-1/23-1/23-1/23-1/2

43-1/23-1/23-1/23-1/24-1/2

3-15/163-15/164-1/24-3/44-3/45-3/85-3/8

1-7/81-7/81-7/8

222

2-3/81-7/81-7/81-7/8

222

2-3/81-7/81-7/8

22

3-1/82-1/42-3/83-1/83-1/83-1/83-1/83-1/8

2 N/A2 N/A2 N/A

2-9/16 3-3/42-9/16 3-3/42-9/16 3-3/43-1/8 N/A

2 N/A2 N/A2 N/A

2-9/16 N/A2-9/16 N/A2-9/16 N/A3-1/8 N/A

2 N/A2 N/A

2-9/16 N/A2-9/16 N/A4-5/8 N/A2-3/8 N/A3-1/8 N/A4-5/8 N/A3-5/8 N/A4-5/8 N/A3-5/8 N/A4-5/8 N/A

10-5/8 N/A10-5/8 N/A10-5/8 N/A12-7/16 13-1/812-7/16 13-1/812-7/16 13-1/813-3/8 N/A10-5/8 N/A10-5/8 N/A10-5/8 N/A12-7/16 N/A12-7/16 N/A12-7/16 N/A13-3/8 N/A10-5/8 N/A10-5/8 N/A12-7/16 N/A12-7/16 N/A17-5/16 N/A11-15/16 N/A13-5/16 N/A17-5/16 N/A15-3/4 N/A17-9/16 N/A16-3/8 N/A18-3/16 N/A

5-1/2 N/A5-1/2 N/A6-1/4 N/A

7 127-1/2 12-1/2

8 1312 N/A

5-1/2 N/A5-1/2 N/A6-1/4 N/A

7 N/A7-1/2 N/A

8 N/A12 N/A6 N/A

6-3/4 N/A7 N/A8 N/A32 N/A8 N/A

12-1/2 N/A32 N/A

18-1/4 N/A31 N/A24 N/A34 N/A

Size (in.) Type A B

1/21/21/21/21/21/21/21/21/21/21/21/21/21/21/21/21/21/25/81/21/25/85/85/85/85/8

E

.8551.0651.330.8551.0651.3301.065.8551.0651.330.8551.0651.3301.0651.0651.3301.0651.3301.0651.3301.3301.3301.9151.9152.4062.406

F Dia.

5/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/85/8

G

1.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.3301.9151.9151.9152.4062.4062.9062.906

H Dia.C19000 MBP

D19000 MBP

Approx. Weight

19000 MBP

!C A U T I O N

Avoid excessiveweld deposits.

19000 Socket Weld

19096MBP Socket Weld

EF

B

A

H

G

DC

EF

B

A

H

G

D C



Socket Weld Connections (Millimeters & Kilograms)

1/2 - SW x 1 - SW3/4 - SW x 1 - SW


1 - SW x 1 - SW3/4 - SW x 1 - SW1/2 - SW x 1 - SW3/4 - SW x 1 - SW



1 - SW x 1 - SW3/4 - SW x 1 - SW

1 - SW x 1 - SW3/4 - SW x 1 - SW

1 - SW x 1-1/2 - SW1 - SW x 1-1/2 - SW1-SW x 1-1/2 - SW

1-1/2 - SW x 2 - SW1-1/2 - SW x 2 - SW2 - SW x 2-1/2 - SW2 - SW x 2-1/2 - SW

19096L19096L19096L19096M19096M19096M19096H19110L19110L19110L19110M19110M19110M19110H19126L19126L19126M19126M19126H19226L19226M19226H19357L19357M19567L19567M

88.988.988.988.988.988.9101.688.988.988.988.988.988.9101.688.988.988.988.9114.3100.0100.0114.3120.7120.7136.5136.5

47.647.647.650.850.850.860.347.647.647.650.850.850.860.347.647.650.850.879.457.260.379.479.479.479.479.4

50.8 N/A50.8 N/A50.8 N/A65.1 95.365.1 95.365.1 95.379.4 N/A50.8 N/A50.8 N/A50.8 N/A65.1 N/A65.1 N/A65.1 N/A79.4 N/A50.8 N/A50.8 N/A65.1 N/A65.1 N/A117.5 N/A66.3 N/A79.4 N/A117.5 N/A92.08 N/A117.5 N/A92.08 N/A117.5 N/A



Size (mm) Type A B

12.712.712.712.712.712.712.712.712.712.712.712.712.712.712.712.712.712.715.912.712.715.915.915.915.915.9

E

21.727.133.821.727.133.827.121.727.133.821.727.133.827.127.133.827.133.827.133.833.833.848.648.661.161.1

F Dia.

15.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.915.9

G

33.833.833.833.833.833.833.833.833.833.833.833.833.833.833.833.833.833.833.848.648.648.661.161.173.873.8

H Dia.C19000 MBP

D19000 MBP

Approx. Weight

19000 MBP

!C A U T I O N

Avoid excessiveweld deposits.

19096MBP Socket Weld

EF

B

A

H

G

DC

EF

B

A

H

G

D C

19000 Socket Weld


19000 (SRV-1/Q2.02)19000.19

1/2

3/4

1

3/4

1

1

1-1/2

2

1/2

3/4

1

3/4

1

19096L19110L

19096L19110L

19096L19110L

19126L

19126L

19226L

19357L

19567L

19096M19110M

19096M19110M

19096M19110M

19126M

19126M

1/2 - 150

1/2 - 300

3/4 - 150

3/4 - 300

1 - 150

1 - 300

3/4 - 150

3/4 - 300

1 - 150

1 - 300

1 - 150

1 - 300

1-1/2 - 150

1-1/2 - 300

2 - 150

2 - 300

1/2 - 300

1/2 - 600

1/2 - 900

1/2 - 1500

3/4 - 300

3/4 - 600

3/4 - 900

3/4 - 1500

1 - 300

1 - 600

1 - 900

1 - 1500

3/4 - 300

3/4 - 600

3/4 - 900

3/4 - 1500

1 - 300

1 - 600

1 - 900

1 - 1500

1

1

1

1

1

1-1/2

2

2-1/2

1

1

1

1

1

1 - 150

1 - 150

1 - 150

1 - 150

1 - 150

1-1/2 - 150

2 - 150

2-1/2 - 150

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 300

1 - 300

4-7/8

4-7/8

4-7/8

4-7/8

4-7/8

6-1/8

6-1/8

6-1/8

4-7/8

4-7/8

4-7/8

4-7/8

4-7/8

1-7/8

1-7/8

1-7/8

1-7/8

1-7/8

2-1/4

3-1/8

3-1/8

2

2

2

2

2

13-1/8

13-3/8

13-5/8

13-3/8

13-5/8

14-1/4

18-1/8

18-1/8

14-15/16

14-15/16

15-7/16

15-7/16

15-3/16

15-3/16

15-11/16

15-11/16

15-7/16

15-7/16

16-7/16

16-7/16

15-3/16

15-3/16

15-11/16

15-11/16

15-7/16

15-7/16

16-7/16

16-7/16

2

2

2

2

2

2-3/8

3-5/8

3-5/8

2-9/16

2-9/16

2-9/16

2-9/16

2-9/16

7/8

1

1

1-1/8

1-1/16

1-3/16

1

1-1/8

1-1/16

1-3/16

1-1/16

1-3/16

1-3/16

1-5/16

1-3/8

1-1/2

1

1

1-1/2

1-1/2

1-1/8

1-1/8

1-5/8

1-5/8

1-3/16

1-3/16

1-3/4

1-3/4

1-1/8

1-1/8

1-5/8

1-5/8

1-3/16

1-3/16

1-3/4

1-3/4

7/16

1/2

1/2

1/2

1/2

1/2

1/2

5/8

7/16

7/16

5/8

5/8

1/2

1/2

5/8

5/8

1/2

1/2

5/8

5/8

1/2

1/2

5/8

5/8

1/2

1/2

5/8

5/8

1-1/16

1-1/16

1-1/16

1-1/16

1-1/16

1-3/16

1-3/8

1-1/2

1-1/16

1-1/16

—

—

1-1/16

1-1/16

—

—

1-1/16

1-1/16

—

—

1-1/16

1-1/16

—

—

1-1/16

1-1/16

—

—

—

—

—

—

—

—

—

—

—

—

1-3/16

1-3/16

—

—

1-3/16

1-3/16

—

—

1-3/16

1-3/16

—

—

1-3/16

1-3/16

—

—

1-3/16

1-3/16

1/2

1/2

1/2

1/2

1/2

1/2

5/8

5/8

1/2

1/2

1/2

1/2

1/2

6-1/4

7-1/4

7

8-1/2

7-3/4

9-1/4

7-1/2

9

8-1/4

9-3/4

9-3/4

11-1/4

22-3/4

26-1/4

26-3/4

28-3/4

9

9

13-1/4

13-1/4

10-1/4

10-1/4

13-1/2

13-1/2

11

11

15-1/2

15-1/2

10-1/4

10-1/4

13-1/2

13-1/2

11

11

15-3/4

15-3/4

9-1/4

10-1/4

10

11-1/2

10-3/4

12-1/4

10-1/2

12

11-1/4

12-3/4

14-3/4

16-1/4

30-1/4

33-3/4

38-1/4

40-1/4

12

12

17-3/4

17-3/4

13-1/4

13-1/4

18

18

14

14

20

20

13-1/4

13-1/4

18

18

14

14

20-1/4

20-1/4

6

6-1/4

6-1/2

6-1/4

6-1/2

6-1/4

7-1/8

7-1/8

6

6

6-1/2

6-1/2

6-1/4

6-1/4

6-3/4

6-3/4

6-1/2

6-1/2

7-1/2

7-1/2

6-1/4

6-1/4

6-3/4

6-3/4

6-1/2

6-1/2

7-1/2

7-1/2

Size(in.) Type

Inlet(RF or RJ)

ANSIStandardExcept

Thickness

Outlet

Female (RF or RJ)NPT ANSI

(in.) Standard Except

Thickness

A

(in.)

B

NPT Flange(in.) (in.)

C

(in.)

D

(in.)

E

RF orRJ

(in.)

F

RF orRJ

(in.)

GClass Class150# 300#

RF or RF orRJ RJ

(in.) (in.)

H

RF orRJ

(in.)

Approx.Weight

Threaded FlangedOutlet Outlet

(lbs.) (lbs.)

19000 Flanged Connections (Inches & Pounds)



1

1-1/2

2

3/4

3/4

1

19226M

19357M

19567M

19096H/19110H

19126H

19226H

1 - 300

1 - 600

1 - 900

1 - 1500

1-1/2 - 300

1-1/2 - 600

1-1/2 - 900

1-1/2 - 1500

2 - 300

2 - 600

2 - 900

2 - 1500

3/4 - 1500

3/4 -2500

3/4 - 1500

3/4 - 2500

1 - 1500

1 - 2500

1-1/2

2

2-1/2

1

1

1-1/2

1-1/2 - 150

1-1/2 - 150

1-1/2 - 300

1-1/2 - 300

2 - 150

2 - 150

2 - 300

2 - 300

2-1/2 - 150

2-1/2 - 150

2-1/2 - 300

2-1/2 - 300

1 - 300

1 - 300

1-1/2 - 300

6-1/8

6-1/8

6-1/8

6-1/4

6-1/4

6-1/8

2-3/8

3-1/8

3-1/8

2-3/8

3-1/8

3-1/8

15-5/8

15-5/8

16-5/8

16-5/8

19-15/16

19-15/16

21-1/16

21-1/16

19-15/16

19-15/16

21-1/16

21-1/16

15-5/8

19-1/16

16-3/8

3-1/8

4-5/8

4-5/8

3-1/8

4-5/8

4-5/8

1-3/16

1-3/16

1-3/4

1-3/4

1-5/16

1-3/8

1-7/8

1-7/8

1-1/2

1-5/8

2-1/8

2-1/8

1-5/8

1-7/8

1-5/8

1-7/8

1-3/4

2

1/2

1/2

5/8

5/8

1/2

1/2

5/8

5/8

5/8

5/8

5/8

5/8

1-3/16

1-3/16

—

—

1-3/8

1-3/8

—

—

1-1/2

1-1/2

—

—

—

—

—

—

—

—

—

—

1-5/16

1-5/16

—

—

1-1/2

1-1/2

—

—

1-5/8

1-5/8

1-3/16

1-3/16

1-3/16

1-3/16

1-5/16

1-5/16

1/2

5/8

5/8

1/2

1/2

1/2

16

16

20-1/2

20-1/2

38-1/4

38-1/4

46-3/4

46-3/4

39-3/4

40-3/4

55-1/4

55-1/4

18-1/2

20-3/4

37

39

39

43-1/2

21

21

29

29

45-3/4

45-3/4

56-1/4

56-1/4

51-1/4

52-1/4

68-3/4

68-3/4

23

25-1/4

41-1/2

43-1/2

47

51-1/2

6-1/4

6-1/4

7-1/4

7-1/4

7-1/8

7-1/8

8-1/4

8-1/4

7-1/8

7-1/8

8-1/4

8-1/4

6-1/2

6-1/2

7-1/4

Size(in.) Type

Inlet(RF or RJ)

ANSIStandardExcept

Thickness

Outlet



Thickness

A

(in.)

B


C

(in.)

D

(in.)

E

RF orRJ

(in.)

F

RF orRJ

(in.)


RF or RF orRJ RJ

(in.) (in.)

H

RF orRJ

(in.)

Approx.Weight


(lbs.) (lbs.)

19000 Flanged Connections (Inches & Pounds)

1/2

3/4

1

19096M

19096M

19096M

1/2 - 150

1/2 - 300

1/2 - 600

1/2 - 900

1/2 - 1500

3/4 - 150

3/4 - 300

3/4 - 600

3/4 - 900

3/4 - 1500

1 - 150

1 - 300

1 - 600

1 - 900

1 - 1500

1

1

1

1 - 150

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 150

1 - 300

1 - 300

4-7/8

4-7/8

4-7/8

2

2

2

15-5/8

15-5/8

15-5/8

16-1/8

16-1/8

15-7/8

15-7/8

15-7/8

16-3/8

16-3/8

16-1/8

16-1/8

16-1/8

17-1/8

17-1/8

3-3/4

3-3/4

3-3/4

7/8

1

1

1-1/2

1-1/2

1

1-1/8

1-1/8

1-5/8

1-5/8

1-1/16

1-3/16

1-3/16

1-3/4

1-3/4

7/16

7/16

7/16

5/8

5/8

1/2

1/2

1/2

5/8

5/8

1/2

1/2

1/2

5/8

5/8

1-1/16

1-1/16

1-1/16

—

—

1-1/16

1-1/16

1-1/16

—

—

1-1/16

1-1/16

1-1/16

—

—

—

—

1-3/16

1-3/16

—

—

—

1-3/16

1-3/16

—

—

—

1-3/16

1-3/16

1/2

1/2

1/2

13

14

14

18-1/4

18-1/4

13-3/4

15-1/4

15-1/4

20

20

14-1/2

16

16

22

22

16

17

17

22-3/4

22-3/4

16-3/4

18-1/4

18-1/4

23

23

17-1/2

19

19

25

25

6

6

6

6-1/2

6-1/2

6-1/4

6-1/4

6-1/4

6-3/4

6-3/4

6-1/2

6-1/2

6-1/2

7-1/2

7-1/2

Size(in.) Type

Inlet(RF or RJ)

ANSIStandardExcept

Thickness

Outlet



Thickness

A

(in.)

B


C

(in.)

D

(in.)

E

RF orRJ

(in.)

F

RF orRJ

(in.)


RF or RF orRJ RJ

(in.) (in.)

H

RF orRJ

(in.)

Approx.Weight


(lbs.) (lbs.)

19096MBP Flanged Connections (Inches & Pounds)

19096MBP Flanged

(Flanged)

(Threaded)

19000 Flanged

D

E

F

G

H

C

A

BB

(Flanged)

(Threaded)

D

E

G

H

C

A

BB

F


19000 (SRV-1/Q2.02)19000.21

Size(in.) Type

Inlet(RF or RJ)

ANSIStandardExcept

Thickness

Outlet



Thickness

A

(mm)

B

NPT Flange(mm) (mm)

C

(mm)

D

(mm)

E

RF orRJ

(mm)

F

RF orRJ

(mm)


RF or RF orRJ RJ

(mm) (mm)

H

RF orRJ

(mm)

Approx.Weight


(Kg) (Kg)

19000 Flanged Connections (Millimeters & Kilograms)

1/2

3/4

1

3/4

1

1

1-1/2

2

1/2

3/4

1

3/4

1

19096L19110L

19096L19110L

19096L19110L

19126L

19126L

19226L

19357L

19567L

19096M19110M

19096M19110M

19096M19110M

19126M

19126M

1/2 - 150

1/2 - 300

3/4 - 150

3/4 - 300

1 - 150

1 - 300

3/4 - 150

3/4 - 300

1 - 150

1 - 300

1 - 150

1 - 300

1-1/2 - 150

1-1/2 - 300

2 - 150

2 - 300

1/2 - 300

1/2 - 600

1/2 - 900

1/2 - 1500

3/4 - 300

3/4 - 600

3/4 - 900

3/4 - 1500

1 - 300

1 - 600

1 - 900

1 - 1500

3/4 - 300

3/4 - 600

3/4 - 900

3/4 - 1500

1 - 300

1 - 600

1 - 900

1 - 1500

1

1

1

1

1

1-1/2

2

2-1/2

1

1

1

1

1

1 - 150

1 - 150

1 - 150

1 - 150

1 - 150

1-1/2 - 150

2 - 150

2-1/2 - 150

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 300

1 - 300

152.4

158.8

165.1

158.8

165.1

158.8

181.0

181.0

152.4

152.4

165.1

165.1

158.8

158.8

171.5

171.5

165.1

165.1

190.5

190.5

158.8

158.8

171.5

171.5

165.1

165.1

190.5

190.5

333.4

339.7

346.1

339.7

346.1

362.0

460.4

460.4

379.4

379.4

392.1

392.1

385.8

385.8

398.5

398.5

392.1

392.1

417.5

417.5

385.8

385.8

398.5

398.5

392.1

392.1

417.5

417.5

123.8

123.8

123.8

123.8

123.8

155.6

155.6

155.6

123.8

123.8

123.8

123.8

123.8

47.6

47.6

47.6

47.6

47.6

57.2

79.4

79.4

50.8

50.8

50.8

50.8

50.8

50.8

50.8

50.8

50.8

50.8

60.3

92.1

92.1

65.1

65.1

65.1

65.1

65.1

22.2

25.4

25.4

28.6

27.0

30.2

25.4

28.6

30.2

27.0

30.2

30.2

33.3

34.9

38.1

25.4

25.4

38.1

38.1

28.6

28.6

41.3

41.3

30.2

30.2

44.5

44.5

28.6

28.6

41.3

41.3

30.2

30.2

44.5

44.5

11.1

12.7

12.7

12.7

12.7

12.7

12.7

15.9

11.1

11.1

15.9

15.9

12.7

12.7

15.9

15.9

12.7

12.7

15.9

15.9

12.7

12.7

15.9

15.9

12.7

12.7

15.9

15.9

27.0

27.0

27.0

27.0

27.0

30.2

34.9

38.1

27.0

27.0

—

—

27.0

27.0

—

—

27.0

27.0

—

—

27.0

27.0

—

—

27.0

27.0

—

—

—

—

—

—

—

—

—

—

—

—

30.2

30.2

—

—

30.2

30.2

—

—

30.2

30.2

—

—

30.2

30.2

30.2

30.2

12.7

12.7

12.7

12.7

12.7

12.7

15.9

15.9

12.7

12.7

12.7

12.7

12.7

2.8

3.3

3.2

3.9

3.5

4.2

3.4

4.1

3.7

4.4

4.4

5.1

10.3

11.9

12.1

13.0

4.1

4.1

6.0

6.0

4.6

4.6

6.1

6.1

5.0

5.0

7.0

7.0

4.6

4.6

6.1

6.1

5.0

5.0

7.1

7.1

4.2

4.6

4.5

5.2

4.9

5.6

4.8

5.4

5.1

5.8

6.7

7.4

13.7

15.3

17.4

18.3

5.4

5.4

8.1

8.1

6.0

6.0

8.2

8.2

6.4

6.4

9.1

9.1

6.0

6.0

8.2

8.2

6.4

6.4

9.2

9.2



1

1-1/2

2

3/4

3/4

1

19226M

19357M

19567M

19096H/19110H

19126H

19226H

1 - 300

1 - 600

1 - 900

1 - 1500

1-1/2 - 300

1-1/2 - 600

1-1/2 - 900

1-1/2 - 1500

2 - 300

2 - 600

2 - 900

2 - 1500

3/4 - 1500

3/4 - 2500

3/4 - 1500

3/4 - 2500

1 - 1500

1 - 2500

1-1/2

2

2-1/2

1

1

1-1/2

1-1/2 - 150

1-1/2 - 150

1-1/2 - 300

1-1/2 - 300

2 - 150

2 - 150

2 - 300

2 - 300

2-1/2 - 150

2-1/2 - 150

2-1/2 - 300

2-1/2 - 300

1 - 300

1 - 300

1-1/2 - 300

155.6

155.6

155.6

158.8

158.8

155.6

60.3

79.4

79.4

60.3

79.4

79.4

396.9

396.9

422.3

422.3

506.4

506.4

535.0

535.0

506.4

506.4

535.0

535.0

396.9

396.9

484.2

484.2

415.9

415.9

79.4

117.5

117.5

79.4

114.3

114.3

30.2

30.2

44.5

44.5

33.3

34.9

47.6

47.6

38.1

41.3

54.0

54.0

41.3

47.6

41.3

47.6

44.5

50.8

12.7

12.7

15.9

15.9

12.7

12.7

15.9

15.9

15.9

15.9

15.9

15.9

15.9

15.9

15.9

15.9

15.9

15.9

30.2

30.2

—

—

34.9

34.9

—

—

38.1

38.1

—

—

—

—

—

—

—

—

—

—

33.3

33.3

38.1

38.1

—

—

41.3

41.3

30.2

30.2

30.2

30.2

33.3

33.3

12.7

15.9

15.9

12.7

12.7

12.7

7.3

7.3

9.3

9.3

17.4

17.4

21.2

21.2

18.0

18.5

25.1

25.1

8.4

9.4

16.8

17.7

17.7

19.7

9.5

9.5

13.2

13.2

20.8

20.8

25.5

25.5

23.2

23.7

31.2

31.2

10.4

11.5

18.8

19.7

21.3

23.4

158.8

158.8

184.2

184.2

181.0

181.0

209.6

209.6

181.0

181.0

209.6

209.6

165.1

165.1

165.1

165.1

184.2

184.2

Size(in.) Type

Inlet(RF or RJ)

ANSIStandardExcept

Thickness

Outlet



Thickness

A

(mm)

B

NPT Flange(mm) (mm)

C

(mm)

D

(mm)

E

RF orRJ

(mm)

F

RF orRJ

(mm)


RF or RF orRJ RJ

(mm) (mm)

H

RF orRJ

(mm)

Approx.Weight


(Kg) (Kg)

19000 Flanged Connections (Millimeters & Kilograms)

1/2

3/4

1

19096M

19096M

19096M

1/2 - 150

1/2 - 300

1/2 - 600

1/2 - 900

1/2 - 1500

3/4 - 150

3/4 - 300

3/4 - 600

3/4 - 900

3/4 - 1500

1 - 150

1 - 300

1 - 600

1 - 900

1 - 1500

1

1

1

1 - 150

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 150

1 - 300

1 - 300

1 - 150

1 - 150

1 - 150

1 - 300

1 - 300

123.8

123.8

123.8

50.8

50.8

50.8

396.9

396.9

396.9

409.6

409.6

403.2

403.2

403.2

415.9

415.9

409.6

409.6

409.6

435.0

435.0

95.3

95.3

95.3

22.2

25.4

25.4

38.1

38.1

25.4

28.6

28.6

41.3

41.3

27.0

30.2

30.2

44.5

44.5

11.1

11.1

11.1

15.9

15.9

12.7

12.7

12.7

15.9

15.9

12.7

12.7

12.7

15.9

15.9

27.0

27.0

27.0

—

—

27.0

27.0

27.0

—

—

27.0

27.0

27.0

—

—

—

—

—

30.2

30.2

—

—

—

30.2

30.2

—

—

—

30.2

30.2

12.7

12.7

12.7

5.9

6.4

6.4

8.3

8.3

6.2

6.9

6.9

9.1

9.1

6.5

7.3

7.3

10.0

10.0

7.3

7.7

7.7

10.3

10.3

7.6

8.3

8.3

10.4

10.4

7.9

8.6

8.6

11.3

11.3

152.4

152.4

152.4

165.1

165.1

158.8

158.8

158.8

171.5

171.5

165.1

165.1

165.1

190.5

190.5

Size(in.) Type

Inlet(RF or RJ)

ANSIStandardExcept

Thickness

Outlet



Thickness

A

(mm)

B

NPT Flange(mm) (mm)

C

(mm)

D

(mm)

E

RF orRJ

(mm)

F

RF orRJ

(mm)


RF or RF orRJ RJ

(mm) (mm)

H

RF orRJ

(mm)

Approx.Weight


(Kg) (Kg)

19096MBP Flanged Connections (Millimeters & Kilograms)

19096MBP Flanged

(Flanged)

(Threaded)

19000 Flanged

D

E

G

H

C

A

BB

(Flanged)

(Threaded)

D

E

G

H

C

A

BB

F

F


19000 (SRV-1/Q2.02)19000.23

N299-50 OR N1009-50N674-70N552-90N1173-70E981-50E603-70

E740-75 & E515-80E962-90

1

E962-75V986-50

V747-75 OR V884-75V894-90 OR V709-90

C267-50C944-70 OR C873-70

S595-50S604-70

Teflon1050LF407930181058

50709070

4

5070

75 & 802

907550759050705070

N/A82759165

Nitrile

Ethylene/Propylene

Fluorocarbon

Neoprene

Silicone

TeflonKalrez3

Kalrez3

Kalrez3

Kalrez3

-45 to +225°-40 to +250°-40 to +350°-25 to +300°-65 to +212°-65 to +212°-70 to +250°-70 to +500°

-60 to +250/400°-15 to +400°-15 to +400°-15 to +400°-45 to +300°-45 to +300°-65 to +437°-65 to +437°-300 to +500°-42 to +550°-58 to +600°-35 to +550°-40 to +500°

-43 to +107°-40 to +121°-40 to +177°-31 to +149°-53 to +100°-53 to +100°-57 to +121°-57 to +260°

-51 to +121/204°-26 to +204°-26 to +204°-26 to +204°-43 to +149°-43 to +149°-53 to +225°-53 to +225°-184 to +260°-41 to +288°-50 to +315°-37 to +288°-40 to +260°

Material Durometer DescriptionTemperature Limits

°F °C

O-Ring Temperature LimitsTable B

O-Ring Selection Procedure

In addition to the rating of the valve based on materials and temperatures,it is possible that if the valve is equipped with O-Rings (soft seats), theO-Ring may limit the range of valve application.The following selection process is simple and straight forward and shouldyield a satisfactory valve selection.Use the following steps in the O-Ring selection process:1. Refer to the Technical Information section in this catalog to selectappropriate O-Ring material for service media.

2. Refer to “Table A” (O-Ring Selection - Durometer). Using the valve setpressure, determine the durometer hardness which will be needed.3. Refer to “Table B”. Utilizing the material selected and the durometerhardness selected check the temperature limits of the material.4. If the selected material is not adequate, select another material andrepeat the procedure.

15 to 30015 to 30015 to 25015 to 20015 to 15015 to 150

100 to 500100 to 50030 to 50015 to 45015 to 40015 to 400

300 to 2500300 to 2500250 to 2250200 to 2000150 to 1500100 to 1000

1400 to 50001400 to 50001000 to 60001000 to 6000

––

15 to 500015 to 500015 to 600015 to 600015 to 150015 to 1000

190961911019126192261935719567

Valve Type 501

Set Press. (psig)701

Set Press. (psig)902

Set Press. (psig)-300 to 200°F

Set Press. (psig)201 to 500°F

Set Press. (psig)

TeflonO-Ring Durometer

O-Ring Selection - DurometerTable A

NOTES: 1 Maximum set pressure for silicone compounds is half of the maximum value.2 The E9 62-90D O-Ring can be used in steam service to a lower pressure limit of 15 psig.

NOTES: 1 EPR962-90D can be used in steam service to a lower pressure limit of 15 psig.2 Set Pressure Ranges per “Table B” For duromoter shall apply to these

compounds (For Nuclear Service, Radiation Environment.)

3 Consult Factory before selecting. (4079 - Not for use in hot water or steam applications.)4 Consult Factory before using. For use with Freon 134A/Ester Oil Service.

NOTE: For fire applications use the operating temperature when selecting a material.



General Information

19000 & 19096MBP SeriesThese ratings apply to threaded or socket weld end connections.

When the valves are supplied with flanged connections the flange ratings may govern the range of valve pressure/temperature rating.

When selecting valves for back pressure applications the following limits apply:

• Constant back pressure - 400 psig• Variable back pressure (superimposed or built-up) - 400 psig or 10% of set pressure whichever is smaller.

Valves with set pressures less than 15 psig cannot be stamped with the ASME Code stamp.

NOTE: When soft seats are used Elastometer material may govern the valve pressure/temperature rating.


19000 (SRV-1/Q2.02)19000.25

Inco

nel X

750

1900

0t S

eries

Inco

nel X

-50

1900

0c-S

4 Se

ries

17-7

PH

1900

0c S

eries

316S

S19

000L

c-S4

Serie

s On

ly

Inco

nel X

750

1900

0c-S

4 Se

ries

316S

S19

000L

c-S4

Serie

s On

ly

Pres

sure

/ Te

mpe

ratu

re R

atin

g of

190

00 S

erie

s Va

lves

Temperature (°F)

1100

1000 90

0

800

700

600

500

400

300

200

100 0

-100

-200

-300

-400

-450

1100

1000

900

800

700

600

500

400

300

200

100 0 -1

00

-200

-300

-400

-450

1100

800

400

-75

-400

-425

525

050

075

010

00

525

050

075

010

00

Valv

e M

axim

um S

et P

ress

ure

(psi

g)5

1000

2000

3000

4000

5000

6000

7000

8000

9000

510

0020

0030

0040

0050

0060

0070

0080

0090

00

316S

S19

000L

c-S4

Serie

s On

ly

Sprin

gM

ater

ial

1956

7M19

357M

1922

6H19

126H

1909

6H19

110H

1909

6L19

110L

1912

6L19

226L

1935

7L19

567L

1909

6M19

110M

1912

6M19

226M



18821727433840146452859165471784497110971224135014771603173018571983211022362363248926162743286929963122324938824514483151475780641370467679831289459577

------------------

667797119142164186209231253298343387432477521566611655700745789834879923968101310571102114713701593170518172040226424872710293431573380360338274050427344975614673178488964100811119812315134321432514548156651678217899

515874911081251421591761932272612953293633974314654995335676016356697047377728068408741044121412991384155417251895206522352405257527452915308632563426427751285979683076818532

-------

19567.567

Orifice Area (sq. in.)

19096 & MBP.0961

19110.110

19126.126

19226.226

19357.357

Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750800900

100011001200130014001500160017001800190020002500300035004000450050005500600064006500700075008000

58668410412314316218220122126029933837741645549453357261165068972876780684588492396210011196139114891586178119762171236625612756295131463341353637313926490158766851782688019776

-------

119137174214254294334374414454534614695775855935101510951175125513361416149615761656173618161896197720572457285830583259365940604460486152625662606364636864726476658066100691207214076160781808220085220882409125694

----

29934443653663773783893810391139134015411743194421452346254727482949315033513552375339544155435645574758495951606165717076738175918010186

-----------------------

ORIFICE CAPACITIES - AIR(USCS Units) ASME B & PVC, Section VIII

Set Pressure plus 10% overpressure or 3 psig,whichever is greater. SCFM Air @ 60°F.

SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or API applications.NOTE 1: 19096MBP set pressure limit 50 to 2000 psig.

Air


19000 (SRV-1/Q2.02)19000.27

* 2903 psig is maximum allowable set pressure for steam. 3000 psig capacities are provided for interpolation purposes only.SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or API applications.NOTE 1: 19096MBP set pressure limit 50 to 1528 psig saturated steam.

ORIFICE CAPACITIES - STEAM(USCS Units) ASME B & PVC, Section VIII

Set Pressure plus 10% overpressureor 3 psig, whichever is greater,lbs. per hour saturated steam

52760977094811251303148016581835201323682723307834343789414444994854520955645919627566306985734076958050840587619116108911266713555144431621817994197702154523321250962550527001

-------

18621527233439746052258564871083696110861212133714631588171318391964208922152340246525912716284129673092321738444471478450975724635169787604823088579002953010227109381166512410131761743721803

14216420725530335039844649454163773282892310191114121013051401149615921687178318781974206921652260235624512929340636453884436148395316579462716748685872617792833488889455100391328516611

19567.567


19096 & MBP.0961

19110.110

19126.126

19226.226

19357.357

Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750800900

10001100120013001400142315001600170018001900200025002903

16218723729234640145651056562072983994810571167127613861495160517141824193320432152226223712480259026992809335639034177445049975544609166397186773378598320892895491018410835115031522219034

334385487600712825937104911621274149917241949217423982623284830733298352337473972419744224647487150965321554657716895801985819143102671139112515136391476315887161461709318343196192092322260236343127539106

838967122315051787206923512633291531973761432548895453601765817145770982738837940199661053011094116581222212786133501391414478172982011821528229382575928579

------------

Steam

*



ORIFICE CAPACITIES - WATER(USCS Units) ASME B & PVC, Section VIII

Set Pressure plus 10% overpressureor 3 psig, whichever is greater,

zero psig back pressure, GPM water @ 70°F.39445261687480869196105113121128135142148154160166171177182187192196201205210214235253262271287303318332345358371

------------------

14151921242628303234374043454850525457596062646668697172747683899396101107112117122126131135139143147151169185200214227239251262270272283293302

10121416182022232426283033353638404243454647495051535455565863687173778185899396100103106109112115129141152163173182

-------

19567.567

Orifice Area (sq. in.)

19096 & MBP.0961

19110.110

19126.126

19226.226

19357.357

Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750800900

100011001200130014001500160017001800190020002500300035004000450050005500600064006500700075008000

11131618202224262829323437394143454749515254565759606263646672788183899398102106110114118122125129132148162175187199208

-------

252833384347515458616672778186909498101105108112115118121124127130133136148160166171182192201210219227235242249257264271303332359383407429450470485

----

62708396108118127136144152167180192201215226236245254263272280289296304312319326333340373402416430456481

-----------------------

SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or API applications.NOTE 1: 19096MBP set pressure limit 50 to 2000 psig.

Water


820000 (SRV-1/Q2.02)820000.1

The 820000 SERIES CONSOLIDATED safety relief valve provides performance characteristics that meet the liquid service applications of various plant operating systemsin today’s industrial markets. This liquid service design is in compliance with ASME B & PVC Code, Section VIII requirements as well as proposed European (CEN)standards for safety valves.

Blowdown Performance is typically less than 15% on incompressible applications. This performance minimizes the loss of process fluids during anoverpressure excursion and assists in the reduction of operating costs.

Seat Design provides for leak-tight seats during system operation and after cycling, during a pressure-relieving mode. Product loss due to seat leakage isvirtually eliminated, resulting in savings from the cost of lost product.

A Simple Design that is easily maintained contributes to reduced maintenance costs.

Introduction

820000

Table of ContentsIntroduction and Scope of Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .820000.1Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .820000.3Dimensions & Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .820000.5Capacities (USCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .820000.9



StandardConnections

INLET OUTLET

50 psig

50 psig

50 psig

50 psig

ValveType

500 psi to 400°F (204.4°C)

500 psig to 400°F (204.4°C)

500 psig to 400°F (204.4°C)

500 psig to 400°F (204.4°C)

Inlet Pressure & Temperature Limits

Actual (ASME)Orifice Area

[sq. in.] [sq. cm]

Back PressureLimit

1/2" x 1"3/4" x 1"

3/4" x 1-1/2"1" x 1-1/2"

1" x 1-1/2"1-1/4" x 1-1/2"

1-1/2" x 2-1/2"2" x 2-1/2"

Valve Size

820121c

820216c

820332c

820857c

The bronze safety relief valve is available in inlet sizes ranging from 1/2" through 2" in both threaded and flanged inlet connections, and 1"through 2-1/2" threaded outlet connections. Liquid opening pressure ranges from 15 psig to 500 psig with a temperature limit of 400°F.

Unless otherwise specified, the valve is always supplied with a threaded cap. Exceptions are applications where ASME requires levers for waterservice over 140°F.

Scope of Design

.121 .78

.216 1.39

.332 2.14

.857 5.53

MaleThreaded

MaleThreaded

MaleThreaded

MaleThreaded

FemaleThreaded

FemaleThreaded

FemaleThreaded

FemaleThreaded

820000Materials

820000 (SRV-1/Q2.02)820000.3

Materials

1

6

7

2

3

8

9

4

10

11

5

12

8

1a

11a23456789101112

Part Material

Base ASTM B283 Alloy C46400 BrassFlange ASTM B62 Alloy C83600 BronzeDisc Brass

Disc Holder BrassBonnet ASTM B584 Alloy C87400 BronzeSpindle Brass

Adjusting Ring BrassAdjusting Ring Pin Brass

Spring Washer BrassSpring Stainless Steel

Adjusting Screw BrassAdjusting Screw Locknut Brass

Screwed Cap Brass

820000Materials


21(see Pages 820000.5 thru 820000.8)

(see Pages 820000.5 thru 820000.8)

20

22

26

25

23

24

27

19

14

13

18

17

16

15

14

13

Plain Lever

Packed Lever

Cap with Gag

131415161718192021222324252627

Part Material

Release Nut BrassRelease Locknut Brass

Plain Cap BronzePlain Lever BronzeCap Screw BrassLever Pin BrassCotter Pin BrassGag Bolt Brass

Sealing Plug BrassPacked Cap BrassCam Shaft BrassBushing BrassLever Bronze

Drive Pin Stainless SteelO-Ring Viton

D ± 1/8"3.2 mm

2-5/8"66.7 mm

C ± 1/8"3.2 mm


820000 (SRV-1/Q2.02)820000.5


820000 Series Valves - Threaded End ConnectionsUSCS Dimensions (in.) and Weights (lbs.)

Type A B C DApprox.WeightSize

1/2 MNPT x 1 FNPT3/4 MNPT x 1 FNPT

3/4 MNPT x 1-1/2 FNPT1 MNPT x 1-1/2 FNPT1 MNPT x 1-1/2 FNPT

1-1/4 MNPT x 1-1/2 FNPT1-1/2 MNPT x 2-1/2 FNPT

2 MNPT x 2-1/2 FNPT

820121820121820216820216820332820332820857820857

2 -1/42 -5/162 -5/82 -3/4

2 -15/163 -1/83 - 9/163 -11/16

1- 1/21- 1/21- 3/41- 3/41- 7/81- 7/8

33

6 - 7/86 - 15/167- 3/167-5/16

8-15/169-1/811- 3/411- 7/8

6 - 15/167

7- 1/47- 3/8

8 -15/169 -1/8

11- 9/1611-11/16

2.92.93.83.8551212

C

A ± 1/16"

B ± 1/16"




820000 Series Valves - Flanged End ConnectionsUSCS Dimensions (in.) and Weights (lbs.)


1-150 #FF x 1-1/2 FNPT1-300 #FF x 1-1/2 FNPT1-150 #FF x 1-1/2 FNPT1-300 #FF x 1-1/2 FNPT

1-1/2 -150 #FF x 2 -1/2 FNPT1-1/2 -300 #FF x 2 -1/2 FNPT

2-150 #FF x 2 -1/2 FNPT2-300 #FF x 2 -1/2 FNPT

820216820216820332820332820857820857820857820857

2- 3/42- 3/4

2-15/162-15/163-3/43-3/4

3-11/163-11/16

1-3/41-3/41-7/81-7/8

3333

7-5/167-5/168-15/168-15/1611-15/1611-15/1612-1/812-1/4

7- 3/87- 3/8

8-15/168-15/1611- 3/411- 3/4

11- 15/1612-1/16

4.95.97815

18.51719

C

A ± 1/16"

B ± 1/16"


820000 (SRV-1/Q2.02)820000.7


820000 Series Valves - Threaded End ConnectionsMetric Dimensions (mm) and Weights (kg)


1/2 MNPT x 1 FNPT3/4 MNPT x 1 FNPT

3/4 MNPT x 1-1/2 FNPT1 MNPT x 1-1/2 FNPT1 MNPT x 1-1/2 FNPT

1-1/4 MNPT x 1-1/2 FNPT1-1/2 MNPT x 2-1/2 FNPT

2 MNPT x 2-1/2 FNPT

820121820121820216820216820332820332820857820857

57.258.766.769.974.679.490.593.7

38.138.144.544.547.647.676.276.2

174.6176.2182.6185.7227

231.8298.5301.6

176.2177.8184.2187.3227

231.8293.7296.9

1.31.31.81.82.32.35.45.4

C

A ± 1.6 mm

B ± 1.6 mm




820000 Series Valves - Threaded End ConnectionsMetric Dimensions (mm) and Weights (kg)


1-150 #FF x 1-1/2 FNPT1-300 #FF x 1-1/2 FNPT1-150 #FF x 1-1/2 FNPT1-300 #FF x 1-1/2 FNPT

1-1/2 -150 #FF x 2 -1/2 FNPT1-1/2 -300 #FF x 2 -1/2 FNPT

2-150 #FF x 2 -1/2 FNPT2-300 #FF x 2 -1/2 FNPT

820216820216820332820332820857820857820857820857

69.969.974.674.695.395.393.793.7

44.544.547.647.676.276.276.276.2

185.7185.7227227

303.2303.2308

311.2

187.3187.3227227

298.5298.5303.2306.4

2.22.73.23.66.88.47.78.6

C

A ± 1.6 mm

B ± 1.6 mm


820000 (SRV-1/Q2.02)820000.9

Orifice Capacities

ORIFICE CAPACITIES - WATER(USCS Units) ASME B & PVC, Section VIII

Gallons per minute @ 70°F at 10% overpressure, zero psig back pressureSet Pressure plus 10% overpressure or 3 psi, whichever is greater

Valve Size / Orifice Area (sq. in.)

1/2" & 3/4"(0.121)

14.7916.7120.0223.1225.8528.3130.5832.6934.6836.5540.0443.2546.2449.0451.7054.2256.6358.9461.1763.3165.3967.4069.3671.2673.1174.9176.6878.4080.0981.74

3/4" & 1"(0.216)

26.4029.8435.7441.2746.1450.5554.5958.3661.9065.2571.4877.2182.5487.5592.2896.79101.09105.22109.19113.02116.73120.32123.81127.20130.51133.73136.88139.95142.96145.91

1" & 1-1/4"(0.332)

40.5745.8654.9363.4370.9277.6983.9189.7195.15100.30109.87118.67126.87134.56141.84148.76155.38161.72167.83173.72179.42184.94190.30195.51200.59205.55210.38215.11219.74224.27

1-1/2" & 2"(0.857)

104.73118.39141.80163.74183.07200.54216.61231.57245.61258.90283.61306.33327.48347.35366.14384.01401.08417.46433.22448.43463.13477.39491.23504.69517.80530.58543.07555.28567.22578.92

Set Press.(psig)

152030405060708090100120140160180200220240260280300320340360380400420440460480500

Water

Agency Review

3900 MPV™

Features / Scope of Design

3900 (SRV-1/Q2.02)3900.1

Features / Scope of Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.1Main Valve Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.7O-Ring Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.9Pop Pilot Product Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.11Pop Pilot Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.13Modulating Pilot Product Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.15Modulating Pilot Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.17Pilot Design Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.19Piping Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.22Dimensions & Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.47Pressure / Temperature (USCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.55Capacities (USCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.56Valve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.62

Table of Contents

39PV 39MV

3900 Flanged Valves comply with:

• ASME B & PVC, Section VIII, Division I • NACE MR0175• D.O.T. Subchapter D Parts 192 and 195• ISO 4126-4• API 520, API 526, and API 527• ANSI B16.34

3900 MPV

Standard Features 39PV Pop Pilot 39MV Modulating Pilot

Convertible valve action To Modulating To PopFull Lift at Set Pressure 110% of Set PressureAdjustable blowdown 2% to 7% 2% to 7%Leak tight seats at % of set pressure 95% to 98% 96% to 99%Main valve seat tight to set point Yes YesField test connection Yes YesGas, liquid and steam service (ASME B & PVC, Section VIII) Yes YesNon-Flowing pilot Yes YesPilot construction entirely stainless steel Yes YesSet point repeatability to within +/-2% Yes Yes100 micron filter protects pilot Yes YesDesigned for ease of maintenance Yes Yes

3900 MPV™


Consolidated Pilot Operated Safety Relief Valves 3900 (SRV-1/Q2.02)3900.2

3900 Flanged Series Overview

CONSOLIDATED, world leader in providing safety and safety relief valvesolutions, offers the new CONSOLIDATED Modular Pilot Valve (MPV), a pilotoperated safety relief valve. The 39MPV is a unique pilot valve design;combining top performance, capabilities and features within aneconomical, modular assembly. CONSOLIDATED has accomplished this featby successfully designing an optimized safety “system” that offersversatility of application, yet provides cost effective standardization.Proven concepts and principles refined from over 100 years of successfuldesign and application experience have been integrated into theCONSOLIDATED MPV, resulting in the production of a new and highly reliablepilot operated safety relief valve which is easy to operate and maintain.Global concern for the environment continues to expand. The need toimprove the operational efficiency of all types of process plants isworldwide. The need for relief valves that provide bubble tight operationand precise opening and closing pressures is increasing due to this trend.CONSOLIDATED Pilot Operated Safety Relief Valves offer high qualityproduction products, performance characteristics and features that areconsistent with today’s industry demands.The combining of our pilots into one unique design provides majorbenefits. This new design pilot valve is suitable for incompressible andcompressible applications including steam. Adapting to variousapplications will require only the appropriate selection of soft goods andoptions to meet the service conditions.

VersatilityThe CONSOLIDATED MPV is the FIRST true modular pilot operated safety reliefvalve design that combines pop and modulating functions within a singleassembly suitable for incompressible and compressible fluids including steam.

CONSOLIDATED MPV pilot operated safety relief valves meet API 526requirements. For higher capacity requirements, full bore sizes areavailable up to 69.94 sq. inches, some with dual outlets. Availablepressure class ratings are ANSI Class 150 to Class 1500.

Total ServiceThe MPV is manufactured by CONSOLIDATED, a TOTAL solutions provider ofpressure relief products offering unmatched application expertise andafter sales support on a world wide basis.

IntroductionCONSOLIDATED 39MPV Series Pilot Operated Safety Relief Valves aredesigned to provide reliable protection for a broad range of pressurizedsystems applications. The operating characteristics and design of pilotactuated relief valves differ significantly from spring loaded pressure reliefvalves. It is extremely important that the user recognizes the merits ofeach design and select valves based on a valid comparison. TheCONSOLIDATED pressure relief valve designs meet the needs of mostapplications found in the markets we currently serve.CONSOLIDATED strives to provide the best available information, data andassistance to its customers in the selection and application of ourproducts. It is impractical, however, for CONSOLIDATED personnel to betrained in all systems and processes in which our products might be used.Ultimate responsibility remains with the customer as the process owneror designer.

Product types covered in subsequent pages are noted below.

The CONSOLIDATED 3900 series pilot operated safety relief valve is supplied with a non-flowing pilot valve. This single pilot design is suitable for bothincompressible and compressible applications and performs equally well on liquid, vapor or two-phase flow services. The set pressure will not requireadjustment if the service condition changes.

Because of its modular design, the 39PV (pop pilot) can be converted to a 39MV (modulator pilot). This makes the CONSOLIDATED 39PV and 39MV pilotvalve the most versatile pilot valve on the market.

Product Type3900390039003900

Pilot Type39PV39MV

39PVSS39MVSS

Servicegas/liquidgas/liquid

steamsteam

Descriptionpop action - non flowingmodulating - non flowingpop action - non flowingmodulating - non flowing

3900 MPV™


3900 (SRV-1/Q2.02)3900.3


NOTES: 1 The above table is general in nature and is to be used as a guideline only.2 Refer to the “Pressure/Temperature” Chart on page 3900.55 for actual pressure limits at a given temperature by pressure class and materials of construction.3 Refer to the “Soft Goods Selection” Chart on page 3900.9 for material selection for a given pressure, temperature, fluid type, durometer hardness, and orifice size.

Pressure Limits1

Soft Goods Guide3

liquid/gasliquid/gasliquid/gasliquid/gasliquid/gasliquid/gasliquid/gasliquid/gas

steamsteam

nitrile (Buna N)fluorocarbon (Viton)ethylene propylene

Kalrez®

Teflonneoprenesilicone

Chemraz®

ethylene propyleneTeflon®

-40 to 250-15 to 400-40 to 400-40 to 400212 to 505

N/AN/AN/A

212 to 500212 to 505

15 to 375015 to 375015 to 375015 to 375050 to 3750

N/AN/AN/A

15 to 4950 to 3750

-40 to 250-15 to 400-40 to 500-40 to 505-40 to 505-45 to 300-40 to 437-20 to 450212 to 500212 to 505

15 to 150015 to 150015 to 150015 to 150050 to 375015 to 80015 to 40015 to 150015 to 4950 to 750

Pilot Valve and Modulator Main ValveService Material

Temperature Range (°F) Pressure Range (psig) Temperature Range (°F) Pressure Range (psig)

Product Type Pilot Type Minimum (psig) Maximum (psig) Service

Temperature Limits1 & 2

Product Type Pilot Type Minimum (°F) Maximum (°F) Service

3900 39PV 15 3750 gas/liquid3900 39MV 15 3750 gas/liquid3900 39PVSS 15 750 steam3900 39MVSS 15 750 steam

3900 39PV -40 505 gas/liquid3900 39MV -40 505 gas/liquid3900 39PVSS 212 505 steam3900 39MVSS 212 505 steam

3900 MPV™




NOTES: * Review the outlet flange rating and review the capacity correction factor.** A cold differential test pressure (CDTP) must be applied for a 39PV with constant back

pressure over 15% of set pressure.*** Contact factory for permissible backpressure limits when pilot vent is piped to valve outlet.

Options

YesYesYesYesYesYesYesYesYesYesYesYes

YesYesYesYesYesYesYesYesYesYesYesYes

Manual Blowdown Valve (standard for steam service)Backflow PreventerRemote SensingRemote Pilot MountingOptional Sensing LineDual PilotsDual FiltersPressure Differential SwitchBonnet (vented)Metal Spring Cover (encloses yoke & spring)High Capacity Line Filter (with flush valve)Remote Actuated Blowdown

Applications

TypePop Action - Non Flowing Yes NoModulating - Non Flowing No Yes

MediaAir, Gas Yes YesVapor Yes YesDirty Vapor (filter required) Yes YesSteam Yes YesLiquid Yes Yes

Operational ConditionsIcing Yes YesPulsations Yes YesReduces Water Hammer (when valve closes) Yes Yes

Operational PerformancePressure Range: 15 - 3750 (Gas/Liquid/Steam) Yes Yes

15 - 750 (Steam) Yes YesBlowdown: 3% Yes

5% YesMain Valve Seat Tightness:

Bubble tight at 99% of set pressure Yes Yes

* Back Pressure (vent piped to main valve outlet):Variable - % of Set Pressure 15% 65%Constant - % of Set Pressure ** 65%

* Back Pressure (with pilot vented to atmosphere):Variable - % of Set Pressure 65% 65%Constant - % of Set Pressure 65% 65%

* Back Pressure (with pilot vented to body bowl):Variable - % of Set Pressure 15% 65%Constant - % of Set Pressure 65% 65%

* Back Pressure (vent not piped to main valve outlet): *** ***

Options 39PV 39MV Options 39PV 39MV

3900 MPV™


3900 (SRV-1/Q2.02)3900.5

Inlet x Outlet Size Combinations - Standard Bore

3900 Standard Bore Orifice Area (Sq. in.)1

1 - 3905 1 - 39101 - 39121 - 39141 - 3916

1-1/2 - 39051-1/2 - 39101-1/2 - 39121-1/2 - 39141-1/2 - 3916

1-1/2 - 39051-1/2 - 39101-1/2 - 39121-1/2 - 39141-1/2- 3916

2 - 39052 - 39102 - 39122 - 39142 - 3916

3 - 39053 - 39103 - 39123 - 39143 - 3916

4 - 39054 - 39104 - 39124 - 39144 - 3916

6 - 39056 - 39106 - 3912

8 - 39058 - 39108 - 3912

SingleSingleSingleSingleSingle






SingleSingleSingle

SingleSingleSingle

Valve Selection

1 - 1501 - 3001 - 6001 - 9001 - 1500

1-1/2 - 1501-1/2 - 3001-1/2 - 6001-1/2 - 9001-1/2 - 1500

1-1/2 - 1501-1/2 - 3001-1/2 - 6001-1/2 - 9001-1/2 - 1500

2 - 1502 - 3002 - 6002 - 9002 - 1500

3 - 1503 - 3003 - 6003 - 9003 - 1500

4 - 1504 - 3004 - 6004 - 9004 - 1500

6 - 1506 - 3006 - 600

8 - 1508 - 3008 - 600

ASME 0.0129 0.2279 0.3568 0.5849 0.9127 1.496 2.138 2.853 3.6 4.34 6.38 11.05 16 26API 0.110 0.196 0.307 0.503 0.785 1.287 1.838 3.317 4.186 5.047 7.417 12.85 18.6 30.21

ORIFICE D E F G H J K L M N P Q R T

NOTE 1 The center line to face dimensions and the Inlet/Outlet combinations of the 3900 meet API Standard 527-1995 for pilot operated valves.

D,E,FD,E,FD,E,FD,E,FD,E,F

D,E,FD,E,FD,E,FD,E,FD,E,F

G,HG,HG,HG,HG,H

G,H,JG,H,JG,H,JG,H,JG,H,J

J,K,LJ,K,LJ,K,LJ,K,LJ,K,L

L,M,N,PL,M,N,PL,M,N,PL,M,N,PL,M,N,P

Q,RQ,RQ,R

TTT

Valve Size (in.)& Type

Outlet FlangeSize (in.) & Class

Outlet TypeInlet FlangeSize (in.) & Class

Orifices

2 - 1502 - 1502 - 1502 - 3002 - 300

2 - 1502 - 1502 - 1502 - 3002 - 300

3 - 1503 - 1503 - 1503 - 3003 - 300

3 - 1503 - 1503 - 1503 - 3003 - 300

4 - 1504 - 1504 - 1504 - 3004 - 300

6 - 1506 - 1506 - 1506 - 3006 - 300

8 - 1508 - 1508 - 150

10 - 15010 - 15010 - 150

3900 MPV™



Inlet x Outlet Size Combinations - Full Bore

Orifices

1-1/2 FB1-1/2 FB1-1/2 FB1-1/2 FB1-1/2 FB

2 FB2 FB2 FB2 FB2 FB

3 FB3 FB3 FB3 FB3 FB

4 FB4 FB4 FB4 FB

6 FB6 FB6 FB

8 FB8 FB8 FB

10 FB10 FB

Outlet FlangeClass2 - 1502 - 1502 - 1502 - 3002 - 300

3 - 1503 - 1503 - 1503 - 3003 - 300

4 - 1504 - 1504 - 1504 - 3004 - 300

6 - 1506 - 1506 - 1506 - 300

8 - 1508 - 1508 - 150

10 - 15010 - 15010 - 150

10 - 15010 - 150

1-1/2 - 39051-1/2 - 39101-1/2 - 39121-1/2 - 39141-1/2 - 3916

2 - 39052 - 39102 - 39122 - 39142 - 3916

3 - 39053 - 39103 - 39123 - 39143 - 3916

4 - 39054 - 39104 - 39124 - 3914

6 - 39056 - 39106 - 3912

8 - 39058 - 39108 - 3912

10 - 390510 - 3910

1-1/2 - 1501-1/2 - 3001-1/2 - 6001-1/2 - 9001-1/2 - 1500

2 - 1502 - 3002 - 6002 - 9002 - 1500

3 - 1503 - 3003 - 6003 - 9003 - 1500

4 - 1504 - 3004 - 6004 - 900

6 - 1506 - 3006 - 600

8 - 1508 - 3008 - 600

10 - 15010 - 300




SingleSingleSingleSingle

DoubleDoubleDouble

DoubleDoubleDouble

DoubleDouble

Valve Selection

Outlet TypeOrifices

3900 Standard Full Bore Orifice Area (Sq. in.)

ASME 1.622 2.764 6.321 10.76 24.95 44.18 69.94ORIFICE 1.5" FB 2" FB 3" FB 4" FB 6" FB 8" FB 10" FB


Inlet FlangeSize (in.) & Class

Outlet FlangeSize (in.) & Class

3900 MPV™

Main Valve Materials

3900 (SRV-1/Q2.02)3900.7

The main valve has six basic components. Assembly and disassembly areaccomplished through top entry. This means that as long as there is nopressure in the system, routine maintenance, such as replacement of O-Rings and seals, may be done with the valve in place, virtuallyeliminating the need for cranes and additional manpower.

BaseThe base is cast with integral flanges. It forms the main structure and is apressure boundary component since it will be exposed to process media.To ensure integrity and reliability, all base castings are produced to thelatest addition to the ASME Boiler & Pressure Vessel Codes. The standardmaterials are Grade WCC carbon steel, and Grade CF8M 316 stainlesssteel. Other materials such as Monel, Hastelloy, and additional code-approved materials are available to satisfy more demandingrequirements. The discharge side of the body is drilled and tapped forpilot venting. If the pilot is vented to the atmosphere, a pipe plug isinstalled to secure this area.

NozzleThe 316 stainless steel nozzle performs two functions: First, it forms thelower sealing surface. Second, the nozzle controls the capacity. The orifice ismachined into the nozzle ensuring that rated flow capacities will be obtainedshould an overpressure condition occur. The nozzle is threaded or bolted intothe body and sealed with an O-Ring. By threading or bolting the nozzle itmay be removed easily for repair or replacement.

GuideThis one piece guide of 316 stainless steel ensures true alignment ofthe disc and nozzle for positive, bubble tight sealing. The heavy guideconstruction is designed to prevent warping or egging when the valveis in service.

DiscThe disc is 316 stainless steel. An O-Ring (part 10) is used for isolatingthe dome chamber when used on air, gas or liquid service. A springenergized Teflon® seal (part 17) is used on the top side of the disc forsteam service. A graphite impregnated Teflon® guide ring (or rings) (part16) provides a low coefficient of friction for the guiding function betweenthe disc and guide. An O-Ring seat (part 12) performs the primary sealingfunction for the disc to ensure bubble tightness. The metal-to-metal stopfor the seat allows the valve to still function, even if the O-Ring isdamaged or destroyed.

Two unique features distinguish the CONSOLIDATED O-Ring seat seal safetyrelief valve from any other design. These are the 50 degree metal-to-metal load bearing seats and the slotted O-Ring retainer.

There are three essentials to a tighter and more secure seal:

1. Concentric AlignmentThe nozzle bore and O-Ring retainer are both machined to anangle of 50 degrees. This ensures that as the valve disc opensand closes the O-Ring is aligned concentrically against the lip ofthe nozzle. Close tolerance between the nozzle and the bodyalso helps to ensure a tight seal when the valve is closed.

2. Maximum Sealing ForceOn the back side of the O-Ring retainer, there are two smallslots. When the valve is closed; process media enters betweenthe machined seat of the nozzle and the O-Ring retainer, andproceeds up the slots behind the O-Ring. This pressure forces theO-Ring against the lip of the nozzle and the curved recess of thedisc. As the pressure within the valve rises to set point, the O-Ring is pressed tightly against the nozzle to maintain maximumsealing force until valve set pressure is reached.

3. O-Ring RetentionWhen the valve opens, the pressure behind the O-Ring escapes fromthese same two slots on the O-Ring retainer. This prevents the O-Ringfrom being ejected. Additionally, the O-Ring encapsulating retainerprevents the O-Ring from being ejected by the high velocity, lowpressure discharge inside the upper valve body.

Cover PlateThe cover plate secures the guide and seals the main body. Each coverplate is drilled and tapped for eye bolts which are used for ease ofassembly or disassembly of the main valve and for handling theassembled valve.

Sensing TubeThe sensing tube is machined from 316 stainless hex bar stock and isthreaded into the main body at a location below the nozzle. The sensingtube picks up media pressure and feeds this pressure through the sensingline to the pilot. To ensure proper orientation, one side of the hex ismarked UP. This marking is to be oriented upward when the valve is sittingon its inlet flange. The pilot valve can also be installed in applicationswhere remote sensing of pressure is used to actuate the pilot. In this case,the sensing tube is installed at the desired sensing location and connectedby the sensing line to the pilot. The sensing tube port in the main valve isthen sealed with a pipe plug.

OtherThe remaining parts: studs, nuts, spring, nameplate, and lead sealcomplete the assembly of the main valve. A wire and lead seal are affixedto the pilot to protect the pilot valve adjustments.

3900 Materials Overview

3900 MPV™

Main Valve Materials


NOTES: 1 Disc O-Ring (10) is not required for steam service.2 Disc Seal (17) is provided for steam service and when O-Ring Seat (12) is Teflon®.3 Main base assemblies can be provided in special materials. Contact the factor for availability.* Not shown.

Main Valve Materials3

Part Standard Material Entirely Stainless (S4) NACE (SG1) - Internal ServiceOnly

BaseNozzle

Nozzle O-RingCover Plate

Cover Plate O-RingSpringGuide

Guide O-RingDisc

Disc O-Ring1

O-Ring RetainerO-Ring SeatLock Screw

Cap Screw - (Inlet sizes 1" & 2")Stud (Inlet size 3" & above)Nut (Inlet size 3" & above)

Guide Ring(s)Disc Seal or Disc Upper O-Ring2

ASME SA216 WCC Carbon Steel316 SSTeflon®

ASME SA516-70 Carbon SteelTeflon®

Inconel X750316 SSTeflon®

316 SSSelect - See Chart pg. 3900.9


304 SSSA193 B7 Alloy SteelSA193 B7 Alloy SteelSA194 2H Alloy Steel

Teflon®

Select - See Chart pg. 3900.9

ASME SA351CF8M Stainless Steel316 SSTeflon®

ASME SA240 316 Stainless SteelTeflon®




316 SSSA193 B8M Alloy SteelSA193 B8M Alloy SteelSA194 8M Alloy Steel

Teflon®


ASME SA216 WCC Carbon Steel316 SSTeflon®

ASME SA516-70 Carbon SteelTeflon®




304 SSSA193 B7 Alloy SteelSA193 B7 Alloy SteelSA194 2H Alloy Steel

Teflon®


12345678910111213

14A*14B151617

Liquid, Gas, & Air ServiceExcept when O-Ring seat (12) is Teflon® and steam service below 50 psig

Steam Service50 psig and above

Liquid, Gas and Air Servicewhen O-Ring Seat (12) is Teflon®

7

17

9

1

6

4

8

16

9

2

14

5

15

10

7

12 11

3

9

13

3900 MPV™

O-Ring Materials

3900 (SRV-1/Q2.02)3900.9

3900 Soft Goods Selection Chart

Soft Goods Selection Chart

Component Description

Service

Liquid/Gas3 Steam

15 to 3750 psig 15 to 49 psig 50 to 3750 psig

Nozzle O-Ring Teflon® Teflon® Teflon®

Cover Plate O-Ring Teflon® Teflon® Teflon®

Guide O-Ring Teflon® Teflon® Teflon®

Disc O-Ring SELECT1 Not Required Not RequiredO-Ring Seat SELECT2 ethylene/propylene 90 Teflon®

Guide Ring Teflon® Teflon® Teflon®

Disc Seal or Disc Upper O-Ring SELECT1 ethylene/propylene 90 Teflon energized sealAdjuster Bottom O-Ring SELECT ethylene/propylene 90 Teflon®

Adjuster Top O-Ring SELECT ethylene/propylene 90 Teflon®

Insert O-Ring SELECT ethylene/propylene 90 Teflon®

Base O-Ring SELECT ethylene/propylene 90 Teflon®

Piston Spring Seal Teflon® Teflon® Teflon®

Adjuster Top Spring Seal Teflon® Teflon® Teflon®

Insert Spring Seal Teflon® Teflon® Teflon®

Base O-Ring SELECT ethylene/propylene 90 Teflon®

Stop O-Ring SELECT ethylene/propylene 90 Teflon®

Seat O-Ring SELECT ethylene/propylene 90 Teflon®

Piston Bottom O-Ring SELECT ethylene/propylene 90 Teflon®

Piston Bottom Spring Seal Teflon® Teflon® Teflon®

Piston Top Spring Seal Teflon® Teflon® Teflon®

Main Valve

Pilot Valve

Modulator

Soft Goods selection for liquid and gas service is accomplished as follows:

A) Material Selection- Refer to Technical Information Section, O-Ring Selection beginningon page TI.22.

- Locate valve fluid and read the applicable O-Ring material.- For fluids not listed, the customer must specify the O-Ring material.

B) Main Valve Pressure Limits- Refer to Table 1 on page 3900.10.- Locate the valve orifice and select the durometer for the requiredset pressure.

NOTES: 1 Disc O-Ring (10) or Disc Upper O-Ring (17) shall be one of the same material and durometer as that selected for the O-Ring Seat (12).2 When Teflon® is selected for O-Ring Seat (12) the Disc Seal (17) shall be a Teflon® energized seal.3 Select soft good using charts for fluid, pressure and temperature. See selection instructions below.

C) Main Valve Temperature Limits- Refer to Table 2 on page 3900.10.- Locate the material and durometer and verify the temperature limits.- If temperature limits are exceeded, repeat Steps A & B.- If an O-Ring cannot be selected, contact the factory.

D) Pilot Valve Pressure and Temperature Limits- Refer to Table 3 on page 3900.10.- Locate the service and review the pressure and temperature ranges,then select the material and durometer.

3900 MPV™

O-Ring Materials


NOTES: 1 Disc O-Ring will be of the same material and durometer as that selected for the Seat O-Ring.2 Maximum set pressure for silicone compounds is half of the maximum value.3 When Teflon® material is selected for the Seat O-Ring a Teflon® energized seal will be provided for the Disc Seal.

Table 1 - Main Valve Pressure Limits (psig)1

Pressure and Temperature LimitsMain Valve and Pilot Valve/Modulator

Table 3 - Pilot Valve and Modulator Pressure/Temperature Limits

NOTES: 1 Consult factory concerning the use of Kalrez®.2 Other materials are on application. Consult factory for availability of other materials.3 Standard O-Ring Material

Temperature Limit (°F)Service Pressure Limit (psig)O-Ring Material2 DurometerMin. Max.Min. Max.

Liquid / Gas Nitrile (Buna-N)3 70 -40 250 15 3750Liquid / Gas Fluorocarbon (Viton) 75 -15 400 15 3750Liquid / Gas Ethylene / Propylene 70 -40 400 15 3750Liquid / Gas Kalrez®1 — -40 400 15 3750Liquid / Gas Teflon® N/A 212 505 50 3750

Steam Ethylene / Propylene 90 212 500 15 49Steam Teflon® N/A 212 505 50 750

Table 2 - Main Valve Temperature Limits (°F)

NOTES: 1 Consult factory concerning the use of Kalrez® and Chemraz®.2 Standard O-Ring Material

Nitrile (Buna-N)

Fluorocarbon (Viton)

Ethylene/Propylene

Temperature Limits

Min. Max.Material Durometer NOTES

70 2 -40 25090 -40 250

70 -65 21290 -40 500

75 -15 40090 -15 400

70 -40 300

Silicone

Kalrez®

Chemraz®

Teflon®

Temperature Limits

Min. Max.Material Durometer NOTES

70 -40 437

N/A -40 505

82 1 -40 50575 1 -40 50591 1 -35 505

75 1 -20 45090 1 -20 450Neoprene

Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.50 70 - 752 90 -40°F to +200°F +201°F to +505°F

Durometer Teflon®3

OrificeInlet Size(in.)

D, E, FD, E, FG, H

G, H, JJ, K, L

L, M, N, PQ, R

TFull BoreFull BoreFull BoreFull BoreFull Bore

11-1/21-1/2

23468346810

N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A

N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A

15151515151515151515151515

800800780780580580420200580580200200200

2002001501501507560307575303030

15001500150015001500150060030015001500300300300

10001000100010001000100060030010001000300300300

375037503750375037503750150015001500150015001500750

50505050505050505050505050

375037503750375037503750150015001500150015001500750

3900 MPV™

Pop Pilot Product Operation

3900 (SRV-1/Q2.02)3900.11

The CONSOLIDATED MPV™ (Modular Pilot Valve) Pilot Operated Safety Relief Valve is offered as both a non-flowing pop pilot and a non-flowing modulatingpilot within a single assembly. The unique modular design construction allows for an open yoke or vented bonnet and easy field conversion from oneconfiguration to the other. The pilot valve operates by sensing system pressure and using this pressure to control the closing force on the main valvedisc. Increasing inlet valve pressure results in increased closing force until the pilot valve opens. Pressure is relieved at a designated set point as processmedia is allowed to discharge through the main valve. Use of the pop pilot configuration will result in a main valve disc “pop” action from the seatedposition to 100% open. When the overpressure condition is relieved, the main valve disc will reseat due to the increased media pressure directed throughthe pilot valve to the top of the valve disc (dome).

Pilot Tightness: 98% of set pointBlowdown: 2% to 5%, or 2psi (whichever is greater) depending

upon ramp rate.Longer Blowdown Results from:

Fast ramp up increasing the set point or fast ramp downdecreasing the reseat point.

Shorter Blowdown Results from:Slow ramp up or slow ramp down.

Pilot Tightness after Main Valve Pop: 95% of set pointPilot Tightness after Pilot Reseats: 98% of set pointVent to Main Valve Outlet if:

Back Pressure is constant or no back pressure

Pressure Ranges: 15 psig - 3750 psig (liquid or gas)15 psig - 750 psig (steam)

Temperature Range: -40°F to 505°F

Compatible for liquid, gas, or steam service

Pop Pilot (PV) -Operating Principles and Performance

Pop Pilot Performance

Common Characteristics

3900 MPV™

Pop Pilot Product Operation


Pop Pilot Operation

PV Valve Open (Relieving Position)

Discharge Through Main Valve Return to Normal Position

When the discharging main valve reduces the inlet pressure to the presetblowdown pressure of the pilot, the pilot piston closes the vent seal.Simultaneously, the inlet seal is reopened in the pilot. The main valveinlet pressure is again allowed to enter the dome above the main valvedisc. As the dome pressure equalizes with the inlet pressure, thedownward force created by the differential areas of the disc closes themain valve.

The main valve disc is allowed to lift off the seat as the fluid forceovercomes the now removed pressure load above the main valve disc.The valve discharges to relieve system pressure.

As inlet pressure increases, the pilot piston strokes and seals off themain valve inlet pressure from the dome pressure. The pilotsimultaneously opens the vent seal to relieve the dome pressure toatmospheric pressure.

Domearea

System pressure from the main valve inlet is fed to the dome area bythe pilot through interconnecting tubing. This equalizes the pressure onthe top of the disc with inlet pressure on the seating surface (bottom)of the disc. Since the area of the top of the disc is larger than the areaof the seating surface, the differential area results in a net downwardforce keeping the main valve tightly closed.

PV Valve Closed (Normal Position)

3900 MPV™

Pop Pilot Materials (PV)

3900 (SRV-1/Q2.02)3900.13

3900 Series Type 39PV Pilot Pop Action, Non-FlowingFor Set Pressures 15 psig to 3750 psig

Main BaseAdjuster CapAdjuster TopAdjuster BottomAdjuster Lock NutCompression ScrewCompression Screw Lock NutSpring WasherSpring1

Insert TopInsert BottomMain PistonCompression Screw CapYoke Cap ScrewAdjuster Bottom O-RingAdjuster Top O-RingInsert O-RingMain Base O-RingYokeMain Piston Spring SealAdjuster Top Spring SealInsert Spring SealField Test Connector

- Ball- Seat O-Ring- Plug O-Ring- Base- Plug- Tube Filter

Vent Assembly/Bug Screen- Male Elbow- Screen

Vent Assembly- Male Elbow- Screen

Pipe PlugSpring CoverVent Assembly

- Male Elbow- Screen

Top PlateSet ScrewBonnet

SA351 Grade CF8M Stainless Steel316 SS316 SS316 SS316 SS316 SS316 SS316 SS

Chrome Steel (Phosphated)316 SS316 SS316 SS316 SS316 SSSelectSelectSelectSelect

SA351 Grade CF8M Stainless SteelTeflon

®

Teflon®

Teflon®

-316 SSSelectSelect

316 SS316 SS316 SS

-316 SS304 SS

- 316 SS304 SS316 SS

Peek (Polyetheretherketone)-

316 SS304 SS316 SS316 SS

SA351 Grade CF8M Stainless Steel

1234567891011121314151617181920212223

24

25

263647

484950

Part Material1

3900 with

Pop Action39PV

NOTE: 1 Pilot valves are available in materials other than those shown above. Refer to the2900 section of this catalog for alternate materials of construction.

3900 MPV™

Pop Pilot Materials (PV)


The CONSOLIDATED 39PV pop action non-flowing pilot provides excellentperformance with full lift at set pressure with minimal blowdown. BunaN o-rings and 316 stainless steel construction throughout are standard.The pilot is non-flowing at full open, improving its capabilities to handledirty conditions and reduce icing problems. There are two unique featuresof the 39PV. It has the ability to be used on liquid, gas or steam servicewithout any adjustments. The 39PV pop action pilot may be converted to

the 39MV modulating pilot by simply installing the Modulator Assembly.This simple, modular design allows for easier maintenance and fewerspare parts.Set pressures are field adjustable, and testing is easily performed usingthe standard field test connection. Manual blowdown, sensing line filter,backflow preventer, and remote sensing are available as options.

Description

BONNET OPTION

HIGH PRESSURE

47

50

9

48

26

25

49

12

20

13

6

7

19

9

12

24

20

23

8

18

5

4

14

2

10

17

3

21

1

15

11

22

16

36

3900 MPV™

Modulating Pilot Product Operation

3900 (SRV-1/Q2.02)3900.15

The CONSOLIDATED MPV (Modular Pilot Valve) Pilot Operated Safety Relief Valve is also offered as a non-flowing modulating pilot design, using a uniquemodular configuration which allows for easy field conversion from pop operation to modulating operation. The modulating pilot operation is very similar tothe pop pilot operation with the added ability to hold a percentage of system pressure above the main valve disc, producing a modulating action. Increasingsystem pressure results in reduced closing force due to venting through the pilot valve. Pressure relief begins at a designated set point as process media isdischarged through the main valve. However, the actual lift of the main valve disc is based on the specific system overpressure condition instead of “popping”instantaneously to the 100% open position as with the pop pilot. This “modulating” action results in improved operating efficiencies through reduced medialoss and lower emissions.

Pilot Tightness: 99% of set point

Blowdown: 1% to 4%, or 2 psi (whichever is greater)depending upon ramp rate.

Pilot Tightness after Pop: 96% of set point

Pilot Tightness after Reseat: 99% of set point

Note: Tightness is defined as zero bubbles per minute.

Modulating Pilot (MV) -Operating Principles and Performance

Modulating Pilot Performance

Common Characteristics

Pressure Ranges: 15 psig - 3750 psig (liquid or gas)15 psig - 750 psig (steam)

Temperature Range: -40°F to 505°F

For liquid, gas, or steam service

3900 MPV™

Modulating Pilot Product Operation


Modulating Pilot Operation

Domearea

Modulating Position

As inlet pressure increases, the pilot piston strokes and seals off themain valve inlet pressure from the dome pressure. The pilotsimultaneously opens the vent seal to relieve the dome pressure tothe bottom of the modulator piston. The modulator piston has adifferential area with the smaller area being on top. The top of thispiston always sees the main valve inlet pressure. When the domepressure is applied to the bottom of the modulator piston, there is anet upward force. This is due to both pressures being equal (at thispoint), and the lower area is larger than the upper area. Themodulator relieves pressure from the dome to the atmosphere untilforce from the inlet pressure on top of the modulator piston issufficient to move it to the closed position. A certain amount ofpressure remains in the dome. This pressure is controlled by thedifferential area in the modulator. Since the dome pressure has notbeen dropped to atmospheric pressure, the main valve only partiallyopens at the set point. The modulator piston will remain closed untilthe main valve disc is forced into higher lift by increasing inletpressure. As this occurs, the modulator piston may relieve furtherpressure from the dome as necessary to achieve the required maindisc lift within 10% overpressure.

MV Fully Open

As the inlet pressure increases further, the net upward force on the mainvalve increases, allowing the main valve to relieve more pressure. Thedisc obtains full lift (full capacity) within 10% of set pressure.

Return to Normal Position

When the discharging valve reduces the inlet pressure to the pre-setblowdown pressure of the pilot, the pilot piston closes the vent seal.Simultaneously, the inlet seal is reopened in the pilot. The main valveinlet pressure is again allowed to enter the dome above the main valvedisc. As the dome pressure equalizes with the inlet pressure, thedownward force created by the differential areas of the disc closes themain valve.

System pressure from the main valve inlet is fed to the dome area bythe pilot through interconnecting tubing. This equalizes the pressure onthe top of the disc with inlet pressure on the seating surface (bottom)of the disc. Since the area of the top of the disc is larger than the areaof the seating surface, the differential area results in a net downwardforce keeping the main valve tightly closed.

MV Valve Closed (Normal Position)

3900 MPV™

Modulating Pilot Materials (MV)

3900 (SRV-1/Q2.02)3900.17

3900 Series Type 39MV PilotModulating Action, Non-FlowingFor Set Pressures 15 psig to 3750 psig

Main BaseAdjuster CapAdjuster TopAdjuster BottomAdjuster Lock NutCompression ScrewCompression Screw Lock NutSpring WasherSpring1

Insert TopInsert BottomMain PistonCompression Screw CapYoke Cap ScrewAdjuster Bottom O-RingAdjuster Top O-RingInsert O-RingMain Base O-RingYokeMain Piston Spring SealAdjuster Top Spring SealInsert Spring SealField Test Connector

- Ball- Seat O-Ring- Plug O-Ring- Base- Plug- Tube Filter

Vent Assembly/Bug Screen- Male Elbow- Screen

Modulator BaseModulator StopModulator Piston TopModulator Piston BottomO-Ring RetainerRetainer Lock ScrewModulator Cap ScrewSocket Head Cap ScrewModulator Base O-RingModulator Stop O-RingModulator Seat O-RingModulator Piston Bottom O-RingPiston Bottom Spring SealPiston Top Spring SealSpring CoverVent Assembly

- Male Elbow- Screen

Top PlateSet ScrewBonnet

SA351 Grade CF8M Stainless Steel316 SS316 SS316 SS316 SS316 SS316 SS316 SS

Chrome Steel (Phosphated)316 SS316 SS316 SS316 SS316 SSSelectSelectSelectSelect

SA351 Grade CF8M Stainless SteelTeflon®

Teflon®

Teflon®

-316 SSSelectSelect

316 SS316 SS316 SS

316 SS304 SS

SA351 Grade CF8M Stainless SteelSA351 Grade CF8M Stainless Steel

316 SS316 SS316 SS316 SS316 SS316 SSSelectSelectSelectSelectTeflon®

Teflon®

Peek (Polyetheretherketone)-

316 SS304 SS316 SS316 SS

SA351 Grade CF8M Stainless Steel

123456789

1011121314151617181920212223

24

25262728293031323334353637384960

616263

Part Material1

Modulating Action39MV3900 with

NOTE: 1 Pilot valves are available in materials other than those shown above. Refer to the2900 section of this catalog for alternate materials of construction.

3900 MPV™

Modulating Pilot Materials (MV)


The CONSOLIDATED 39MV Pilot Operated Safety Relief Valve is a non-flowing modulating pilot valve that provides exceptional performance and stable operation.The 39MV design controls the attached main valve so as to relieve only enough system pressure to control the system upset, thereby minimizing the medialost. This patented technology is the latest advancement in pilot design within the pressure range of 15 psig to 3750 psig for vapor, liquid and steam service.The 39MV design is the only non-flowing modulating valve of its kind available with adjustable blowdown.This unique modulator is a simple addition to the 39PV pop action design. The simplicity of design allows for easier maintenance and for lower spare parts inventory.

Description

BONNET OPTION

HIGH PRESSURE

63

9

6261

60

32

20

12

2

6

7

19

12

9

24

23

20

10

11

17

22

3

16

21

15

1

8

14

18

27

36

37

28

35

29

34

30

382533

5

34

26 3133

4

49

13

3900 MPV™

Pilot Design Options

3900 (SRV-1/Q2.02)3900.19

Options and Accessories

Option Page

Backflow Preventer . . . . . . . . . . . . . . . . . . . . . . . . . .3900.19Bonnet (Vented) . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.20Dirty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.21 Dual Pilots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.20Field Test Connection . . . . . . . . . . . . . . . . . . . . . . . .3900.19Filters (Sensing Line, High Capacity & Dual) . . . . . . . . .3900.19

Option Page

Manual Blowdown . . . . . . . . . . . . . . . . . . . . . . . . . .3900.19Pressure Differential Switch . . . . . . . . . . . . . . . . . . . .3900.20Pilot Valve Tester . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.20Remote Pilot Mounting . . . . . . . . . . . . . . . . . . . . . . .3900.20Spring Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.20Remote Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.20

Manual Blowdown ValveAn optional manual blowdown valve is available for relieving the pilotoperated safety relief valve. Consult factory for applications requiring apneumatic or electrical solenoid blowdown valve which may be connectedto a distant location, such as an operator station, for remote actuation.The blowdown valve is ported directly to the main dome area, so that themedia in the dome is vented when the blowdown valve is actuated, thusallowing the main valve to open.For all applications on air, water over 140°F, or steam service, ASMESection VIII - Division 1 requires each pressure relief valve to have a liftingdevice such as a blowdown valve or a means of connecting or applyingpressure to the pilot to verify that the moving parts essential to goodoperation are free to move. (Reference UG 136(a)(3)).The lifting lever or blowdown valve may be omitted under Code Case 2203.All orders for pressure relief valves without levers or blowdown valves forsteam, air and water over 140°F must state specifically that the valves arebeing purchased per Code Case 2203. The purchaser is responsible forobtaining jurisdictional authorization for use of Code Case 2203.

Field Test ConnectionA 1/4” FNPT field test connection is standard on all pilot valve types.This allows the stroking of the valve with an auxiliary media, e.g. air ornitrogen. An internal check valve is present in the field test connectionisolating the inlet media from the test media and at the same time,allowing the valve to open normally in the event of a systemoverpressurization during a field test.

FiltersFilter options are available for dirty applications. These filters are installedin the pilot inlet sensing line.For the 39PV and 39MV, an optional sensing line filter is available. Thisfilter has a 316 stainless steel body, Teflon® seals, and a 40-50 micronstainless steel filter element. This filter is standard for steam service.Other high capacity filter options include: (1) a carbon steel cadmium coated filter body with a 35 micron stainless steelelement, (2) a stainless steel filter body, and (3) an entirely stainless steel filter arrangement. The O-Ring in the filters for steamservice will be Teflon®. These filters may be equipped with a manuallyoperated needle valve which allows for purging the filtered material whilethe valve is in operation.All filter elements are stainless steel, and all filters, including carbon steel, conform to NACE Standard MR0175.A dual filter arrangement is available for applications in which thecustomer is unsure of the filter maintenance requirements. In these cases,a preventive maintenance program may be developed by monitoring thefilters, without taking the valve off line.

Backflow PreventerWhen the pilot operated safety relief valve is not vented directly toatmosphere, it is possible to build up back pressure in the discharge line.This is typical in situations where several valves manifold into a commondischarge header. Should the discharge line pressure exceed the valveinlet pressure, it could cause the piston to lift and allow reverse flowthrough the main valve. This situation can be eliminated through theuse of the Backflow Preventer.

3900 MPV™



Spring CoverAn optional metal spring cover that fits over the yoke arms.

BonnetA vented Bonnet that replaces the Yoke provides protection of personnel. Thebonnet will protect the spring from external debris and weather conditions(See page 3900.14 or 3900.18).

Pressure Differential SwitchElectrical: A pressure differential switch is available which may be wiredto an operator station or some other remote location. The switch willprovide a signal that indicates when the main valve is opening. Thestandard pressure differential switch is a single pole, double throw, rate at5 amps and 30 volts DC with a NEMA 4 enclosure. (For otherconfigurations, consult the factory.)Pneumatic: For applications that do not permit an electrical differentialswitch, an option is available to provide pneumatic signal to indicate whenthe main valve opens.

Remote Pilot MountingThe 39PV and 39MV pilots can be mounted separately from the mainvalve. Remote pilot mounting will allow heating or cooling the pilot in caseambient conditions are outside the scope of the pilot. It will also enablethe user to group several pilots together for control of ambient conditionsin a smaller space. In addition, this promotes easier maintenance.

Dual PilotsA dual pilot arrangement is available for applications in which the pilotvalve O-Rings require monitoring and/or maintenance more often than themain valve. In this installation, the pilot valves may be alternated formaintenance, without bringing the system down.

NOTE: For all option and accessory material variations, contact the factory.

Remote SensingThe pilot valve inlet may be piped to a location remote from the mainvalve. In this application, the customer may pipe the inlet sensing line tosome location other than where the main valve is located and where thepressure will be relieved (for tubing size and maximum length, consultfactory for recommendations.)

Pilot Valve TesterThe pilot valve test indicator is available for the modulating and popaction pilot valves. The valve test indicator measures the set pressure ofthe pilot, while maintaining pressure on the main valve dome area;thereby, allowing only the pilot to actuate. The system shown below isavailable for remote or local testing.

Spring Cover (optional)

3900 MPV™


3900 (SRV-1/Q2.02)3900.21

Dirty Service Option

Severe dirty service, precipitation and viscous fluid problems can besolved using the dirty service option offered on the 3900 POSRV. Adirty service option can be added to the standard pilot valve. The kitcontains a 316 SS chamber, an isolation seal and an extended pilotpiston. The module is positioned at the top of the pilot valve body andbelow the pilot valve yoke. Crucial valve components such as themodulator, dome assembly, vent, and inlet seals never come in contactwith the dirty system media. The process media pressure still controlsthe set pressure and blowdown of the POSRV.For applications requiring the main valve to relieve the dirty fluid, analternate clean media supply is piped to the pilot. The alternate cleanmedia must be set at the same pressure as the set pressure of the pilotvalve, but cannot exceed 3750 psig, which is the design limit of the pilotvalve. In the event that the alternate clean media supply is lost, the mainvalve will fail in the open position.For applications requiring the main valve to relieve clean fluid upstreamof the dirty process in order to maintain the dirty process pressure atsafe levels, the dirty process pressure is supplied to the dirty servicemodule. The sensing line from the main valve and the connection tothe main valve dome is connected to the pilot in the normal manner.The pilot is set to operate at the design pressure of the dirty process.When the dirty process pressure reaches the set to open pressure of the

pilot, the pilot is stroked by the increase in the dirty process pressureand the pilot performs the block and bleed operations to effect openingof the main valve. When the dirty process pressure reaches the set toclose pressure of the pilot, the pilot is stroked by the reduction in thedirty process pressure and the pilot performs the block and bleedoperations to effect the closing of the main valve.The dirty service module is a closed chamber. The flow of dirty processmedia to the pilot valve is only that volume required to stroke the pilotin response to increasing dirty process pressure. The limited volume offlowing dirty media entering the pilot makes plugging of the module anunlikely possibility. However, if plugging of the module is a concern, themodule can be filled with a compatible clean liquid and a siphon tubecan be fitted in the connection line between the pilot module and thedirty process.The dirty service option can provide some cost savings in materialselection for corrosive service. It is possible that only the material ofconstruction for the dirty service option will need to be upgraded. Theremaining parts in contact with clean media could use standard materialsof construction.

NOTE: For special material options on the dirty service option consult the factory.

MPV Dirty Service Pilot

Process media controls theset pressure & blowdown.

Clean media supplypiped to pilot.

3900 MPV™

Piping Configurations


Alternate Piping Arrangements

39PV with Pilot Valve Vented to Atmosphere Single Outlet Double OutletStandard Field Test Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.23 . . . . . . . . . . . .3900.26Manual Blowdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.23 . . . . . . . . . . . .3900.26Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.24 . . . . . . . . . . . .3900.27Backflow Preventer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.24 . . . . . . . . . . . .3900.27Manual Blowdown and Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.25 . . . . . . . . . . . .3900.28Backflow Preventer, Manual Blowdown and Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.25 . . . . . . . . . . . .3900.28

39MV with Pilot Valve Vented to AtmosphereStandard Field Test Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.29 . . . . . . . . . . . .3900.32Manual Blowdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.29 . . . . . . . . . . . .3900.32Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.30 . . . . . . . . . . . .3900.33Backflow Preventer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.30 . . . . . . . . . . . .3900.33Manual Blowdown and Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.31 . . . . . . . . . . . .3900.34Backflow Preventer, Manual Blowdown and Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.31 . . . . . . . . . . . .3900.34

39 PV with Pilot Valve Vented to Body BowlStandard Field Test Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.35 . . . . . . . . . . . .3900.38Manual Blowdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.35 . . . . . . . . . . . .3900.38Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.36 . . . . . . . . . . . .3900.39Backflow Preventer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.36 . . . . . . . . . . . .3900.39Manual Blowdown and Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.37 . . . . . . . . . . . .3900.40Backflow Preventer, Manual Blowdown and Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.37 . . . . . . . . . . . .3900.40

39 MV with Pilot Valve Vented to Body BowlStandard Field Test Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.41 . . . . . . . . . . . .3900.44Manual Blowdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.41 . . . . . . . . . . . .3900.44Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.42 . . . . . . . . . . . .3900.45Backflow Preventer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.42 . . . . . . . . . . . .3900.45Manual Blowdown and Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.43 . . . . . . . . . . . .3900.46Backflow Preventer, Manual Blowdown and Pilot Supply Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.43 . . . . . . . . . . . .3900.46

Main Valve

3900 MPV™


3900 (SRV-1/Q2.02)3900.23

Alternate Piping Arrangements3900 Series Type 39PV Pilot with Single Outlet[ Pilot Vented to Atmosphere ]

Pilot Valve w/ Manual Blowdown(Optional For All Media Applications)

29 41

33

Pilot Valve w/ Standard Field Test Connection(Standard For All Media Applications)

MaterialPart

Field Test ConnectionSensing TubeSensing LineDome Line

BracketBracket Cap Screw

Plug FilterPipe Plug

2327282930313233

316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel

Carbon Steel316 Stainless Steel316 Stainless Steel

Carbon Steel

MaterialPart




Needle Valve (Manual Blowdown)

232728293031323341



Carbon Steel316 Stainless Steel

29

33

23

28

27

33

31

30

29

23

28

27

33

31

30

4129

32 32

3900 MPV™



29

33

4645

28

29

30

23

27

46

31

45

39MPV Series Type 39PV Pilot with Single Outlet[ Pilot Vented to Atmosphere ]

Pilot Valve w/ Backflow Preventer(Optional For Liquid & Gas Applications)

Pilot Valve w/ Pilot Supply Filter(Optional For All Media Applications)

MaterialPart



Pipe PlugPilot Supply Filter

2327282930313342




MaterialPart



Plug FilterBackflow Preventer

Backflow Preventer Line

232728293031324546


Carbon Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel

42

28

27

33

31

23

29

30

29

32

3900 MPV™


3900 (SRV-1/Q2.02)3900.25

45

29 29

33

41

45

41

23

28

42

29 29

30

27

23

28

4230

27

33 46

4131

41

31

39MPV Series Type 39PV Pilot with Single Outlet[ Pilot Vented to Atmosphere ]

Pilot Valve w/ Manual Blowdown &Pilot Supply Filter & Backflow Preventer

(Optional For Steam Applications)

Pilot Valve w/ Manual Blowdown & Pilot Supply Filter(Standard for Steam Applications)

(Optional for Liquid & Gas Applications)

MaterialPart



Needle Valve (Manual Blowdown)Pilot Supply Filter

Backflow PreventerBackflow Preventer Line

23272829303141424546


Carbon Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel

MaterialPart



Pipe PlugNeedle Valve (Manual Blowdown)

Pilot Supply Filter

232728293031334142




46

3900 MPV™



33 33

41

39MPV Series Type 39PV Pilot with Double Outlet[ Pilot Vented to Atmosphere ]

23

29 41

30

32 27

31

28

23

29

30

27

31

28

32

2929

Pilot Valve w/ Manual Blowdown(Optional For Liquid & Gas Applications)

Pilot Valve w/ Field Test Connection(Standard For All Media Applications)

MaterialPart




2327282930313233



Carbon Steel

MaterialPart





232728293031323341




3900 MPV™


3900 (SRV-1/Q2.02)3900.27

23

29

30

27

31

28

42

33

45

46

23

29

30

32 27

31

28

45

46


29

29



MaterialPart



Pipe PlugPilot Supply Filter

2327282930313342




MaterialPart



Plug FilterBackflow Preventer


232728293031324546



3900 MPV™



41

33

41

45

46


23

29

30

27

31

28

41

42

23

29

30

27

31

28

45

46

41

42

29

29





MaterialPart





23272829303141424546



MaterialPart



Pipe PlugNeedle Valve (Manual Blowdown)

Pilot Supply Filter

232728293031334142




3900 MPV™


3900 (SRV-1/Q2.02)3900.29

39MPV Series Type 39MV Pilot with Single Outlet[ Pilot Vented to Atmosphere ]

28 28 53

23

37

2729

25 26

38

30

33

28 23

37

27

25 26

29 33

38

30

2853

Pilot Valve w/ Standard Field Test Connection(Standard for All Media Applications)

MaterialPart

Field Test ConnectionPlug Filter

Sensing TubeSensing LineDome Line


Pipe PlugMod. Cap Screw

Soc. Head Cap Screw

23252627282930333738

316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel



Pilot Valve w/ Manual Blowdown(Optional for All Media Applications)

MaterialPart





Soc. Head Cap ScrewNeedle Valve (Manual Blowdown)

2325262728293033373853



Carbon Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel

3900 MPV™



28


28 57

23

54

37

27

29

26

38

30

33

2823

37

27

29

25 26

33

38

3028

58

57

Pilot Valve w/ Pilot Supply Filter(Optional for All Media Applications)

MaterialPart




Soc. Head Cap ScrewPilot Supply Filter

23262728293033373854




Pilot Valve w/ Backflow Preventer(Optional for Liquid & Gas Applications)

MaterialPart





Soc. Head Cap ScrewBackflow Preventer


232526272829303337385758




3900 MPV™


3900 (SRV-1/Q2.02)3900.31


28 5328 57

58

53

23

54

37

27

29

26

38

30

33

5328

23

54

37

27

29

26

33

53

3830

5857



MaterialPart





Pilot Supply Filter

2326272829303337385354






MaterialPart





Pilot Supply FilterBackflow Preventer


23262728293033373853545758



Carbon Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel

28

3900 MPV™



39MPV Series Type 39MV Pilot with Double Outlet[ Pilot Vented to Atmosphere ]

28

53

28

23

37

27

29

25 26

38

28

3023

37

27

29

25 26

38

30

5328

Pilot Valve w/ Field Test Connection(Standard for All Media Applications)

MaterialPart





Soc. Head Cap Screw

23252627282930333738





MaterialPart






2325262728293033373853




33 33

3900 MPV™


3900 (SRV-1/Q2.02)3900.33


28

33

57

58

23

37

27

54

29

26

38

28

3023

37

27

29

25 26

383028

5857

28


MaterialPart




Soc. Head Cap ScrewPilot Supply Filter

23262728293033373854





MaterialPart





Soc. Head Cap ScrewBackflow Preventer


232526272829303337385758




33

3900 MPV™



53

28

3357

58

53

28

23

37

27

54

29

26

38

28

30

53

23

37

27

54

29

26

38 3028

58 57

53




MaterialPart





Pilot Supply Filter

2326272829303337385354





(Optional for Steam Applications)

MaterialPart







23262728293033373853545758




33

3900 MPV™


3900 (SRV-1/Q2.02)3900.35

Alternate Piping Arrangements3900 Series Type 39PV Pilot with Single Outlet[ Pilot Vented to Body Bowl ]

Pilot Valve w/ Manual Blowdown(Optional For All Media Applications)

29

39

29 41

39

23

28

29

30

32 27

39

3123

28

29

30

32 27

39

31

41

Pilot Valve w/ Standard Field Test Connection(Standard For All Media Applications)

MaterialPart



Plug FilterDischarge Line

2327282930313239



MaterialPart





232728293031323941



3900 MPV™



29

39 39

29

46

42

28 28

29 29

30 30

27

39

31

23 23

32 27

4639

31

45

39MPV Series Type 39PV Pilot with Single Outlet[ Pilot Vented to Body Bowl ]



MaterialPart



Discharge LinePilot Supply Filter

2327282930313942



MaterialPart







45

23272829303132394546

3900 MPV™


3900 (SRV-1/Q2.02)3900.37

45

29 2941 41

46

23

28

42

29 29

30

27

23

28

42 30

27

39 4639

4131

41

31

39MPV Series Type 39PV Pilot with Single Outlet[ Pilot Vented to Body Bowl ]





MaterialPart



Discharge LineNeedle Valve (Manual Blowdown)



2327282930313941424546



MaterialPart




Pilot Supply Filter

232728293031394142



39

45

39

3900 MPV™



39 39

41

39MPV Series Type 39PV Pilot with Double Outlet[ Pilot Vented to Body Bowl ]

23

29 41

32 27

31

28

23

29

30

27

31

28

32

2929

Pilot Valve w/ Manual Blowdown(Optional For Liquid & Gas Applications)

Pilot Valve w/ Field Test Connection(Standard For All Media Applications)

MaterialPart




2327282930313239



MaterialPart





232728293031323941



39

30

39

3900 MPV™


3900 (SRV-1/Q2.02)3900.39

23

29

30

27

31

28

42

3939

45

46

23

29

32 27

31

28

45

46


29

29



MaterialPart



Discharge LinePilot Supply Filter

2327282930313942



MaterialPart





23272829303132394546



39

30

39

3900 MPV™



41 41

45


23

29

27

31

28

41

42

23

29

27

31

28

45

46

41

42

29

29

Pilot Valve w/ Manual Blowdown &Pilot Supply Filter &Backflow Preventer




MaterialPart






2327282930313941424546



MaterialPart




Pilot Supply Filter

232728293031394142



3939

30

39

30

39

46

3900 MPV™


3900 (SRV-1/Q2.02)3900.41

39MPV Series Type 39MV Pilot with Single Outlet[ Pilot Vented to Body Bowl ]

28

39

28 53

39

23

37

2729

25 26

38

30

39

28 23

37

27

25 26

29 39

38

30

2853

Pilot Valve w/ Standard Field Test Connection(Standard for All Media Applications)

MaterialPart



BracketBracket Cap ScrewMod. Cap Screw

Soc. Head Cap ScrewDischarge Line

23252627282930373839




MaterialPart






2325262728293037383953



3900 MPV™



28

39


28 57

39

23

54

37

27

29

26

30

39

2823

37

27

29

25 26

39

38

3028

58

57


MaterialPart




Pilot Supply Filter

23262728293037383954




MaterialPart






232526272829303738395758



38

3900 MPV™


3900 (SRV-1/Q2.02)3900.43


28 53

39

28 57

3958

53

23

54

37

27

29

26

38

30

39

53 23

54

37

27

29

26

39

53

38 3028 58 57



MaterialPart





2326272829303738395354





MaterialPart






23262728293037383953545758


Carbon Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel

28

3900 MPV™



39MPV Series Type 39MV Pilot with Double Outlet[ Pilot Vented to Body Bowl ]

28

39

53

28

23

37

39

27

29

25 26

38

28 28

3023

37

39

27

29

25 26

38

30

53

Pilot Valve w/ Field Test Connection(Standard for All Media Applications)

MaterialPart





23252627282930373839




MaterialPart






2325262728293037383953



39

3900 MPV™


3900 (SRV-1/Q2.02)3900.45


28

57

58

23

37

39

27

54

29

26

38

28

3023

37

39

27

29

25 26

28


MaterialPart




Pilot Supply Filter

23262728293037383954




Part






232526272829303738395758



38 3028 58 57

39 39

Material

3900 MPV™



53

28

57

58

53

28

23

37

39

27

54

29

26

38

28

30

53

23

37

39

27

54

29

26

38 3028 58 57

53




MaterialPart





2326272829303738395354





Part






23262728293037383953545758


Carbon Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel316 Stainless Steel

39 39

Material

3900 MPV™


3900 (SRV-1/Q2.02)3900.47

39MPV Series Type 39PV PilotSingle Outlet, Standard Bore & Full Bore*

C ± 1/4± 6.4 mm

D ± 1/2± 12.7 mm

B ± 1/16± 1.6 mm

A ± 1/16± 1.6 mm

3900 Dimensions & Weights Index

39MPV Series with Type 39PV (Pop) PilotSingle Outlet - Standard Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.47Single Outlet - Full Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.49Double Outlet - Full Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.49

39MPV Series with Type 39MV (Modulating) PilotSingle Outlet - Standard Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.51Single Outlet - Full Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.53Double Outlet - Full Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3900.53

39PV w/ Single Outlet - Standard Bore*See page 3900.49 for full bore single outlet dimensions and weights.

NOTE: All weights listed in this document are approximations.

3900 MPV™



39MPV Series Type 39PV - Dimensions & WeightsSingle Outlet, Standard Bore

Bin.

(mm)

Cin.

(mm)

Din.

(mm)

WEIGHTlb.

(kg)D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

G,H

G,H

G,H

G,H

G,H

G,H,J

G,H,J

G,H,J

G,H,J

G,H,J

J,K,L

J,K,L

J,K,L

J,K,L

J,K,L

L,M,N,P

L,M,N,P

L,M,N,P

L,M,N,P

L,M,N,P

Q,R

Q,R

Q,R

T

T

T

Ain.

(mm)1 - 3905

1 - 3910

1 - 3912

1 - 3914

1 - 3916

1-1/2 - 3905

1-1/2 - 3910

1-1/2 - 3912

1-1/2 - 3914

1-1/2 - 3916

1-1/2 - 3905

1-1/2 - 3910

1-1/2 - 3912

1-1/2 - 3914

1-1/2 - 3916

2 - 3905

2 - 3910

2 - 3912

2 - 3914

2 - 3916

3 - 3905

3 - 3910

3 - 3912

3 - 3914

3 - 3916

4 - 3905

4 - 3910

4 - 3912

4 - 3914

4 - 3916

6 - 3905

6 - 3910

6 - 3912

8 - 3905

8 - 3910

8 - 3912

2 - 150

2 - 150

2 - 150

2 - 300

2 - 300

2 - 150

2 - 150

2 - 150

2 - 300

2 - 300

3 - 150

3 - 150

3 - 150

3 - 300

3 - 300

3 - 150

3 - 150

3 - 150

3 - 300

3 - 300

4 - 150

4 - 150

4 - 150

4 - 300

4 - 300

6 - 150

6 - 150

6 - 150

6 - 300

6 - 300

8 - 150

8 - 150

8 - 150

10 - 150

10 - 150

10 - 150

4-1/2(114.3)4-1/2

(114.3)4-1/2

(114.3)4-3/4

(120.7)4-3/4

(120.7)4-3/4

(120.7)4-3/4

(120.7)4-3/4

(120.7)5-1/2

(139.7)5-1/2

(139.7)4-7/8

(123.8)4-7/8

(123.8)4-7/8

(123.8)6-3/4

(171.5)6-3/4

(171.5)4-7/8

(123.8)4-7/8

(123.8)4-7/8

(123.8)6-3/4

(171.5)6-3/4

(171.5)6-3/8

(161.9)6-3/8

(161.9)6-3/8

(161.9)7-1/8

(181.0)7-1/8

(181.0)8-1/4

(209.6)8-1/4

(209.6)8-1/4

(209.6)9-3/16(233.4)9-3/16(233.4)9-1/2

(241.3)9-1/2

(241.3)9-1/2

(241.3)11

(279.4)11

(279.4)11

(279.4)

1 - 150

1 - 300

1 - 600

1 - 900

1 - 1500

1-1/2 - 150

1-1/2 - 300

1-1/2 - 600

1-1/2 - 900

1-1/2 - 1500

1-1/2 - 150

1-1/2 - 300

1-1/2 - 600

1-1/2 - 900

1-1/2 - 1500

2 - 150

2 - 300

2 - 600

2 - 900

2 - 1500

3 - 150

3 - 300

3 - 600

3 - 900

3 - 1500

4 - 150

4 - 300

4 - 600

4 - 900

4 - 1500

6 - 150

6 - 300

6 - 600

8 - 150

8 - 300

8 - 600

4-1/8(104.8)4-3/8

(111.1)4-3/8

(111.1)4-15/16(125.4)4-15/16(125.4)4-7/8

(123.8)4-7/8

(123.8)4-7/8

(123.8)5-7/8

(149.2)5-7/8

(149.2)5-1/8

(130.2)5-1/8

(130.2)5-1/8

(130.2)6-3/8

(161.9)6-3/8

(161.9)5-3/8

(136.5)5-3/8

(136.5)5-3/8

(136.5)6-9/16(166.7)6-9/16(166.7)6-1/8

(155.6)6-1/8

(155.6)6-3/8

(161.9)7-1/2

(190.5)7-1/2

(190.5)7-3/4

(196.9)7-3/4

(196.9)7-3/4

(196.9)9-13/16(249.2)9-13/16(249.2)9-7/16(239.7)9-7/16(239.7)9-11/16(246.1)10-7/8(276.2)10-7/8(276.2)

11-11/16(296.9)

8-1/2(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-3/4

(247.7)9-3/4

(247.7)9-3/4

(247.7)9-13/16(249.2)9-13/16(249.2)11-7/16(290.5)11-7/16(290.5)11-7/16(290.5)11-3/8(288.9)11-3/8(288.9)12-5/16(312.7)12-5/16(312.7)12-5/16(312.7)13-1/4(336.6)13-1/4(336.6)13-1/4(336.6)

21-3/16(538.2)21-7/16(544.5)21-7/16(544.5)

22(558.8)

22(558.8)

21-15/16(557.2)

21-15/16(557.2)

21-15/16(557.2)

22-15/16(582.6)

22-15/16(582.6)23-5/16(592.1)23-5/16(592.1)23-5/16(592.1)24-9/16(623.9)24-9/16(623.9)23-9/16(598.5)23-9/16(598.5)23-9/16(598.5)24-3/4(628.7)24-3/4(628.7)25-1/8(638.2)25-1/8(638.2)25-3/8(644.5)

26-13/16(681.0)

26-13/16(681.0)28-1/2(723.9)28-1/2(723.9)28-1/2(723.9)31-1/16(789.0)31-1/16(789.0)

31-15/16(811.2)

31-15/16(811.2)32-3/16(817.6)35-7/16(900.1)35-7/16(900.1)36-1/4(920.8)

39(17.7)

40(18.1)

43(19.5)

49(22.2)

49(22.2)

46(20.9)

47(21.3)

48(21.8)

61(27.7)

61(27.7)

53(24.0)

55(24.9)

57(25.9)

66(29.9)

66(29.9)

53(24.0)

55(24.9)

57(25.9)

80(36.3)

80(36.3)

80(36.3)

83(37.6)

87(39.5)140

(63.5)157

(71.2)191

(86.6)199

(90.3)206

(93.4)240

(108.9)259

(117.5)348

(157.9)367

(166.5)415.7

(188.6)516.7

(234.4)544.7

(247.1)601

(272.6)

OUTLET FLANGESize (in.) &

Class

INLET FLANGESize (in.) &

ClassORIFICES


3900 MPV™


3900 (SRV-1/Q2.02)3900.49

39MPV Series Type 39PV PilotFull Bore

C ± 1/4± 6.4 mm

D ± 1/2± 12.7 mm

C ± 1/4± 6.4 mm

D ± 1/2± 12.7 mm

B ± 1/16± 1.6 mm

A ± 1/16± 1.6 mm

A ± 1/16± 1.6 mm

39PV w/ Single Outlet - Full Bore


39PV w/ Double Outlet - Full Bore


B ± 1/16± 1.6 mm

B ± 1/16± 1.6 mm

3900 MPV™



OUTLETTYPE

Ain.

(mm)

Bin.

(mm)

Cin.

(mm)

Din.

(mm)

WEIGHTlb.

(kg)

39MPV Series Type 39PV - Dimensions & WeightsSingle Outlet, Full Bore

39MPV Series Type 39PV - Dimensions & WeightsDouble Outlet, Full Bore

NOTE: For Dimensions For 1-1/2" & 2" Full Bore Valves, Contact Factory.

6" Full Bore

6" Full Bore

6" Full Bore

8" Full Bore

8" Full Bore

8" Full Bore

10" Full Bore

10" Full Bore

6 - 3905B

6 - 3910B

6 - 3912B

8 - 3905B

8 - 3910B

8 - 3912B

10 - 3905B

10 - 3910B

6 - 150

6 - 300

6 - 600

8 - 150

8 - 300

8 - 600

10 - 150

10 - 300

Double

Double

Double

Double

Double

Double

Double

Double

8 - 150

8 - 150

8 - 150

10 - 150

10 - 150

10 - 150

10 - 150

10 - 150

8-7/8(225.4)9-5/16(236.5)

10(254.0)

10-1/4(260.4)

10-15/16(277.8)11-3/4(298.5)

10-1/4(260.4)

10-15/16(277.8)

8-1/4(209.6)8-1/4

(209.6)8-1/4

(209.6)

11-1/16(281.0)11-1/16(281.0)11-1/16(281.0)

12-3/4(323.9)12-3/4(323.9)

34-7/16(874.7)34-7/8(885.8)35-9/16(903.3)

37-5/8(955.7)38-5/16(973.1)39-1/8(993.8)

40-1/2(1028.7)41-3/16(1046.2)

13-1/4(336.6)13-1/4(336.6)13-1/4(336.6)

14-5/8(371.5)14-5/8(371.5)14-5/8(371.5)

16-1/16(408.0)16-1/16(408.0)

516.7(234.4)544.7

(247.1)601.0

(272.6)

975.2(442.4)985.2

(446.9)1005.2(456.0)

1282.2(581.6)1292.2(586.1)


Class


ClassORIFICES


4 - 150

4 - 150

4 - 150

6 - 150

6 - 150

6 - 150

3" Full Bore

3" Full Bore

3" Full Bore

4" Full Bore

4" Full Bore

4" Full Bore

OUTLETTYPE

Ain.

(mm)

Bin.

(mm)

Cin.

(mm)

Din.

(mm)

WEIGHTlb.

(kg)Single

Single

Single

Single

Single

Single

3 - 150

3 - 300

3 - 600

4 - 150

4 - 300

4 - 600

3 - 3905B

3 - 3910B

3 - 3912B

4 - 3905B

4 - 3910B

4 - 3912B

5-9/16(141.3)5-13/16(147.6)6-1/8

(155.6)

6-15/16(176.2)7-7/16(188.9)7-15/16(201.6)

28-3/8(720.7)28-5/8(727.1)

28-15/16(735.0)

28-11/16(728.7)29-3/16(741.4)

29-11/16(754.1)

7(177.8)

7(177.8)

7(177.8)

7-3/8(187.3)7-3/8

(187.3)7-3/8

(187.3)

11-7/16(290.5)11-7/16(290.5)11-7/16(290.5)

11-7/16(290.5)11-7/16(290.5)11-7/16(290.5)

191(86.6)199

(90.3)206

(93.4)

191(86.6)199

(90.3)206

(93.4)


Class


ClassORIFICES


3900 MPV™


3900 (SRV-1/Q2.02)3900.51

39MPV Series Type 39MV PilotSingle Outlet, Standard Bore and Full Bore

39MV w/ Single Outlet - Standard Bore*See page 3900.53 for full bore single outlet dimensions and weights.


C ± 1/4± 6.4 mm

D ± 1/2± 12.7 mm

B ± 1/16± 1.6 mm

A ± 1/16± 1.6 mm

3900 MPV™



39MPV Series Type 39MV - Dimensions & WeightsSingle Outlet, Standard Bore

Bin.

(mm)

Cin.

(mm)

Din.

(mm)

WEIGHTlb.

(kg)D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

D,E,F

G,H

G,H

G,H

G,H

G,H

G,H,J

G,H,J

G,H,J

G,H,J

G,H,J

J,K,L

J,K,L

J,K,L

J,K,L

J,K,L

L,M,N,P

L,M,N,P

L,M,N,P

L,M,N,P

L,M,N,P

Q,R

Q,R

Q,R

T

T

T

Ain.

(mm)1 - 3905

1 - 3910

1 - 3912

1 - 3914

1 - 3916

1-1/2 - 3905

1-1/2 - 3910

1-1/2 - 3912

1-1/2 - 3914

1-1/2 - 3916

1-1/2 - 3905

1-1/2 - 3910

1-1/2 - 3912

1-1/2 - 3914

1-1/2 - 3916

2 - 3905

2 - 3910

2 - 3912

2 - 3914

2 - 3916

3 - 3905

3 - 3910

3 - 3912

3 - 3914

3 - 3916

4 - 3905

4 - 3910

4 - 3912

4 - 3914

4 - 3916

6 - 3905

6 - 3910

6 - 3912

8 - 3905

8 - 3910

8 - 3912

2 - 150

2 - 150

2 - 150

2 - 300

2 - 300

2 - 150

2 - 150

2 - 150

2 - 300

2 - 300

3 - 150

3 - 150

3 - 150

3 - 300

3 - 300

3 - 150

3 - 150

3 - 150

3 - 300

3 - 300

4 - 150

4 - 150

4 - 150

4 - 300

4 - 300

6 - 150

6 - 150

6 - 150

6 - 300

6 - 300

8 - 150

8 - 150

8 - 150

10 - 150

10 - 150

10 - 150

4-1/2(114.3)4-1/2

(114.3)4-1/2

(114.3)4-3/4

(120.7)4-3/4

(120.7)4-3/4

(120.7)4-3/4

(120.7)4-3/4

(120.7)5-1/2

(139.7)5-1/2

(139.7)4-7/8

(123.8)4-7/8

(123.8)4-7/8

(123.8)6-3/4

(171.5)6-3/4

(171.5)4-7/8

(123.8)4-7/8

(123.8)4-7/8

(123.8)6-3/4

(171.5)6-3/4

(171.5)6-3/8

(161.9)6-3/8

(161.9)6-3/8

(161.9)7-1/8

(181.0)7-1/8

(181.0)8-1/4

(209.6)8-1/4

(209.6)8-1/4

(209.6)9-3/16(233.4)9-3/16(233.4)9-1/2

(241.3)9-1/2

(241.3)9-1/2

(241.3)11

(279.4)11

(279.4)11

(279.4)

8-1/2(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)8-1/2

(215.9)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-5/16(236.5)9-3/4

(247.7)9-3/4

(247.7)9-3/4

(247.7)9-13/16(249.2)9-13/16(249.2)11-7/16(290.5)11-7/16(290.5)11-7/16(290.5)11-3/8(288.9)11-3/8(288.9)12-5/16(312.7)12-5/16(312.7)12-5/16(312.7)13-1/4(336.6)13-1/4(336.6)13-1/4(336.6)

1 - 150

1 - 300

1 - 600

1 - 900

1 - 1500

1-1/2 - 150

1-1/2 - 300

1-1/2 - 600

1-1/2 - 900

1-1/2 - 1500

1-1/2 - 150

1-1/2 - 300

1-1/2 - 600

1-1/2 - 900

1-1/2 - 1500

2 - 150

2 - 300

2 - 600

2 - 900

2 - 1500

3 - 150

3 - 300

3 - 600

3 - 900

3 - 1500

4 - 150

4 - 300

4 - 600

4 - 900

4 - 1500

6 - 150

6 - 300

6 - 600

8 - 150

8 - 300

8 - 600

4-1/8(104.8)4-3/8

(111.1)4-3/8

(111.1)4-15/16(125.4)4-15/16(125.4)4-7/8

(123.8)4-7/8

(123.8)4-7/8

(123.8)5-7/8

(149.2)5-7/8

(149.2)5-1/8

(130.2)5-1/8

(130.2)5-1/8

(130.2)6-3/8

(161.9)6-3/8

(161.9)5-3/8

(136.5)5-3/8

(136.5)5-3/8

(136.5)6-9/16(166.7)6-9/16(166.7)6-1/8

(155.6)6-1/8

(155.6)6-3/8

(161.9)7-1/2

(190.5)7-1/2

(190.5)7-3/4

(196.9)7-3/4

(196.9)7-3/4

(196.9)9-13/16(249.2)9-13/16(249.2)9-7/16(239.7)9-7/16(239.7)9-11/16(246.1)10-7/8(276.2)10-7/8(276.2)

11-11/16(296.9)

21-3/16(538.2)21-7/16(544.5)21-7/16(544.5)

22(558.8)

22(558.8)

21-15/16(557.2)

21-15/16(557.2)

21-15/16(557.2)

22-15/16(582.6)

22-15/16(582.6)23-5/16(592.1)23-5/16(592.1)23-5/16(592.1)24-9/16(623.9)24-9/16(623.9)23-9/16(598.5)23-9/16(598.5)23-9/16(598.5)24-3/4(628.7)24-3/4(628.7)25-1/8(638.2)25-1/8(638.2)25-3/8(644.5)

26-13/16(681.0)

26-13/16(681.0)28-1/2(723.9)28-1/2(723.9)28-1/2(723.9)31-1/16(789.0)31-1/16(789.0)

31-15/16(811.2)

31-15/16(811.2)32-3/16(817.6)35-7/16(900.1)35-7/16(900.1)36-1/4(920.8)

42(19.1)

43(19.5)

46(20.9)

52(23.6)

52(23.6)48.4

(22.0)50.0

(22.7)50.2

(22.8)63.2

(28.7)63.2

(28.7)56

(25.4)58

(26.3)60

(27.2)69

(31.3)69

(31.3)56

(25.4)58

(26.3)60

(27.2)83

(37.6)83

(37.6)83

(37.6)86

(39.0)90

(40.8)143

(64.9)160

(72.6)194

(88.0)202

(91.6)209

(94.8)243

(110.2)262

(118.8)351

(159.2)370

(167.8)418.7

(189.9)519.7

(235.7)547.7

(248.4)604

(274.0)


Class


ClassORIFICES


3900 MPV™


3900 (SRV-1/Q2.02)3900.53

39MPV Series Type 39MV PilotFull Bore

39MV w/ Double Outlet - Full Bore


39MV w/ Single Outlet - Full Bore


C ± 1/4± 6.4 mm

D ± 1/2± 12.7 mm

B ± 1/16± 1.6 mm

A ± 1/16± 1.6 mm

C ± 1/4± 6.4 mm

D ± 1/2± 12.7 mm

A ± 1/16± 1.6 mm

B ± 1/16± 1.6 mm

B ± 1/16± 1.6 mm

3900 MPV™



39MPV Series Type 39MV - Dimensions & WeightsSingle Outlet, Full Bore

39MPV Series Type 39MV - Dimensions & WeightsDouble Outlet, Full Bore

Note: For Dimensions For 1-1/2" & 2" Full Bore Valves, Contact Factory.

4 - 150

4 - 150

4 - 150

6 - 150

6 - 150

6 - 150

3" Full Bore

3" Full Bore

3" Full Bore

4" Full Bore

4" Full Bore

4" Full Bore

OUTLETTYPE

Ain.

(mm)

Bin.

(mm)

Cin.

(mm)

Din.

(mm)

WEIGHTlb.

(kg)Single

Single

Single

Single

Single

Single

3 - 150

3 - 300

3 - 600

4 - 150

4 - 300

4 - 600

3 - 3905B

3 - 3910B

3 - 3912B

4 - 3905B

4 - 3910B

4 - 3912B

5-9/16(141.3)5-13/16(147.6)6-1/8

(155.6)

6-15/16(176.2)7-7/16(188.9)7-15/16(201.6)

28-3/8(720.7)28-5/8(727.1)

28-15/16(735.0)

28-11/16(728.7)29-3/16(741.4)

29-11/16(754.1)

7(177.8)

7(177.8)

7(177.8)

7-3/8(187.3)7-3/8

(187.3)7-3/8

(187.3)

11-7/16(290.5)11-7/16(290.5)11-7/16(290.5)

11-7/16(290.5)11-7/16(290.5)11-7/16(290.5)

194(88.0)202

(91.6)209

(94.8)

194(88.0)202

(91.6)209

(94.8)


Class


ClassORIFICES


OUTLETTYPE

Ain.

(mm)

Bin.

(mm)

Cin.

(mm)

Din.

(mm)

WEIGHTlb.

(kg)6" Full Bore

6" Full Bore

6" Full Bore

8" Full Bore

8" Full Bore

8" Full Bore

10" Full Bore

10" Full Bore

6 - 3905B

6 - 3910B

6 - 3912B

8 - 3905B

8 - 3910B

8 - 3912B

10 - 3905B

10 - 3910B

6 - 150

6 - 300

6 - 600

8 - 150

8 - 300

8 - 600

10 - 150

10 - 300

Double

Double

Double

Double

Double

Double

Double

Double

8 - 150

8 - 150

8 - 150

10 - 150

10 - 150

10 - 150

10 - 150

10 - 150

8-7/8(225.4)9-5/16(236.5)

10(254.0)

10-1/4(260.4)

10-15/16(277.8)11-3/4(298.5)

10-1/4(260.4)

10-15/16(277.8)

8-1/4(209.6)8-1/4

(209.6)8-1/4

(209.6)

11-1/16(281.0)11-1/16(281.0)11-1/16(281.0)

12-3/4(323.9)12-3/4(323.9)

34-7/16(874.7)34-7/8(885.8)35-9/16(903.3)

37-5/8(955.7)38-5/16(973.1)39-1/8(993.8)

40-1/2(1028.7)41-3/16(1046.2)

13-1/4(336.6)13-1/4(336.6)13-1/4(336.6)

14-5/8(371.5)14-5/8(371.5)14-5/8(371.5)

16-1/16(408.0)16-1/16(408.0)

519.7(235.7)547.7

(248.4)604

(274.0)

978.2(443.7)988.2

(448.2)1008.2(457.3)

1285.2(583.0)1295.2(587.5)


Class


ClassORIFICES


3900 MPV™

Pressure / Temperature

3900 (SRV-1/Q2.02)3900.55

3910 3914 3905 3912 39163905 3912 3916 3910 3914TypePressure Class

From-20°F to:

100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400505

300

750750750750750750750750750750750748746744742740738736734732730728725723720718715713710708705662

150

290287284281278275272269266263260257254251248245242239236233230227224221218215212209206203200168

1500

37503750375037503750375037503750375037503750373937283717370636953684367336623651364036293618360735963585357435633552354135303310

600

15001500150015001500150015001500150015001500149614911487148214781473146914641460145514511446144214371433142814241419141514101324

900

22502250225022502250225022502250225022502250224422372231222422182211220521982192218521782171216421572150214321362129212221151986

150

275272268265261258254251247244240238235233230228225223220218215213211209207205203201199197195168

300

720710700690680670660650640630620614608602596590584578572566560556551547542538533529524520515478

900

21602130210020702040201019801950192018901860184218241806178817701752173517161698168016661652163816241610159615821568155415401431

600

1440142014001380136013401320130012801260124012281216120411921180116811561144113211201111110210931084107510661058104810391030952

1500

36003550349934493398334832973247319631463095306530353005297529452915288528552825279527732750272827052683266026382615259325702383

SA216 WCC Carbon Steel SA351 CF8M Stainless Steel

USCS Pressure -Temperature Rating Charts

3900 MPV™

Capacities (USCS)


67779812114316618921123425730234739343848352957461966571075580184689193798210271073111811631390161717301844207022972524275129773204343136583884411143384564569868328532

Series 3905 - 3916 Type PV & MV PilotsSTANDARD BORE - ORIFICE CAPACITIES - AIR

(USCS Units)

Capacities based on set pressure plus 10%or 3 psi overpressure, whichever is greater.

Capacities in standard cubic feet per minute @ 60°F.

188216274337400464527590653717843970109612231349147616021729185519822108223523612488261427412867299431203247387945124828514457776409704276748307893995721020410837114691210212734158971905923803

481554701863102511871348151016721834215724812804312834523775409944224746507053935717604063646688701173357658798283069923115411235013159147771639518013196312124922867244852610327721293393095732575406644875460889

11261299164320222401278031593538391742965054581265707328808688449602103601111811876126341339214150149081566616424171821794018698194562324627036289313082634616384074219745987497775356757357611476493768727725177630795257114207142633

2205254332173959470154446186692876708412989611380128641434815832173161880120285217692325324737262212770529189306733215833642351263661038094455155293556645603566777675197826179003897458104879112299119720127141134561141982149402186505223608279262

3908450657017016833196461096012275135901490517534201642279425423280533068333312359423857141201438314646049090517205434956979596096223864868674978064693794100368106942120090133238146386159535172683185831198979212127225275238424251572264720330461396202494813

9801113001429817595208922418927486307843408137378439735056757162637567035176945835399013496728103323109917116512123106129701136295142890149484156079162673169268202240235212251698268185301157334129367102400074433046466019498991

————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279


Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750800900

10001100120013001400150016001700180019002000250030003750

120138175215256296336377417458538619700781862942102311041185126613461427150815891670175018311912199320742478288230843286369040944498490253065710611465186922732677308134101541217415204

3083554495536577608649681071117513821590179720042212241926272834304132493456366338714078428644934700490851155322635973967915843394701050711544125801361714654156911672817765188021983820875260603124439020

7889081150141516801945221024762741300635364067459751275658618867197249777983108840937199011043110962114921202312553130831361416266189182024421570242222687429526321783483037482401334278545437480895074153393666537991399803

174820152549313737254313490154896077666578419017101931136912545137211489816074172501842619602207782195423130243062548226658278342901030186360664194644886478265370659586654667134677226831068898694866100746106627112507118387147787177187221288

26593066387947745669656374588353924710142119311372115510173001908920878226682445726246280362982531614334043519336983387724056142351441404592954876638236829772770817179066499611108557117504126451135398144345153292162238171185180132224866269601336702

6771780798771215514433167111898921267235452582330379349353949144046486025315857714622706682671382759378049385049896059416198717103273107828112384116940139719162499173888185278208057230836253616276395299174321954344733

————————

15920183542322228578339333928844644499995535460710714208213192842103552114263124974135685146395157106167817178527189238199949210659221370232081242791253502264213274924328477382031408807435584489137542691596244649798703351756905810458

————————

APPROVED: ASME Boiler & Pressure Vessel Code, Section VIII (for set pressure 15 psig and above).CERTIFIED: National Board of Boiler and Pressure Vessel Inspectors.

Air

3900 MPV™

Capacities (USCS)

3900 (SRV-1/Q2.02)3900.57


Series 3905 - 3916 Type PV & MV PilotsFULL BORE - ORIFICE CAPACITIES - AIR

(USCS Units)


Capacities in standard cubic feet per minute @ 60°F.


8549851246153418212109239726842972325938344409498455596134671072857860843590109585101601073511310118851246013035136101418514760176362051121949233862626229137320123488837763406384351446389492645214055015578907226786644108209

131481515819179236022802532448368704129345716501395898567831766778552294368103214112060120906129751138597147443156289165135173980182826191672200518209364218209227055271284315513337628359742403971448200492429536659580888625117669346

————————

368564249253763661617856090958103356115755128153140551165348190145214941239738264534289331314128338924363721388517413314438111462907487704512501537297562094586890611687636484760467884450946441

————————————————

3331384048595979710082209341104611158212702149431718419425216662390826149283903063132872351133735439595418364407746318485595080053041552825752368729799348553791139102344113550124755135960147166158371169576180781191987203192214397225603281629337655421695

1.5" FB1.622

2" FB2.764

3" FB6.321

4" FB10.76

6" FB24.95

8" FB44.18

10" FB69.94

Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750800900

10001100120013001400150016001700180019002000250030003750

145616792124261431043594408445745064555465347514849494741045411434124141339414374153541633417314182931927320253212332221323193241732515330053349533740339852447524965254552594516435169251741517905183950888509375098650123148147647184395

567065378271101781208613993159011780819715216232543829253330673688240697445124832752142559575977263586674017121675031788468266186476902909410597920116995136069145606155143174217193292212366231440250515269589288663307738326812345886364961384035479407574778717836

23281268413396141793496255745765288731208095288784104448120111135775151438167102182766198429214093229757245420261084276748292411308075323738339402355066370729386393402057480375558693597852637011715329793647871966950284102860211069201185238

————————

Air

3900 MPV™

Capacities (USCS)


15172024262931333537414447505356586163656769717375777981838492100103107113119125131136141146151156160165169189207231

Series 3905 - 3916 Type PV & MV PilotsSTANDARD BORE - ORIFICE CAPACITIES - WATER

(USCS Units)


Capacities in gallons of water per minute @ 70°F,and 0 psig back pressure.

4248576674818894100105115125133141149156163170176183189194200206211216221226231236258279289298317334350366380395409422435448460472528578647

1091231481701912092262412562702963193413623824004184354524684834985125265405535665795926046627157407648108548969369741011104610811114114611781208135114801655

25628934640044749052956660063369374980084989593998010201059109611321167120112341266129713281357138714151550167517331790189920022099219322822368245225322610268627592831316534673877

5015666787848769601037110811761239135714661567166317531838192019982074214722172285235124162479254026002658271527713036327933943506371839194111429444694638480049585110525954035543619767897590

888100412031389155317011837196420832196240625982778294631063257340235413675380439284049416742814392450146074710481149115379581060146212658969457284760879198217850687859055931895739822109811202913449

2228251830163483389442664608492652255507603365176966738977898169853288819216953998521015610450107361101511287115531181312067123151349114572150831557816523174171826719079198582060821331

————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279


Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750800900

10001100120013001400150016001700180019002000250030003750

273037424752566064677379859095100104108112116120124128131135138141144147150165178184190202213223233243252261269278286294301337369413

7079941091221341441541641731892042192322442562682792893003093193283373463553633713793874244584744895195475746006246486706927147347557748669481060

1792022422803133433703964204434855245605946266576867147417677928168408638869079299509709901085117212131253132914001469153415971657171517721826187919311981221524262712

397449538621694760821878931982107611621242131713891456152115831643170117571811186319141964201320602106215221962406259826902778294631063257340235413675380439284049416742814392491153796014

604683818945105611571250133614171494163717681890200521132216231524092500258826732755283529132989306231343205327433413660395440924227448347264956517753885592578859786162634065146683747281859152

153917402084240626902947318334033609380541684502481351055381564458946135636765906806701672197417761077987981816183368508932010067104201076211415120321262013181137191423714737

————————

36184090489956576325692974848001848689459799105841131512002126511326813858144241496915494160021649516973174381789118333187641918619599200032191223668244992530226837282892966930989322543347234647

————————


Water

3900 MPV™

Capacities (USCS)

3900 (SRV-1/Q2.02)3900.59

Series 3905 - 3916 Type PV & MV PilotsFULL BORE - ORIFICE CAPACITIES - WATER

(USCS Units)


Capacities in gallons of water per minute @ 70° F,and 0 psig back pressure.


19421926330333937240142945548052656860764467971274477480383185988591193696098410071030105210741176127013151358144015181593166317311797186019211980203720932148240126302941

29883378404646725224572261816608700973888093874193459912104481095811445119131236212796132161362614018144021477615141154971584516186165201809719547202332089722164233632450325593266382764428614

————————

8377947011343130981464416042173271852419647207102268724505261972778629289307183208433395346553587237048381883929540372414214244443443444194537446310507305479556718

————————————————

7578551025118313231449156616741775187120502214236725112647277628993018313232423348345135513648374338363926401441004185458449525126529456155919620864846748700372497487771779418158837093581025211462

1.5" FB1.622

2" FB2.764

3" FB6.321

4" FB10.76

6" FB24.95

8" FB44.18

10" FB69.94

Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750800900

10001100120013001400150016001700180019002000250030003750

3313744485175786346847327768188969681035109811571214126813191369141714641509155315951637167717161755179318302004216522412315245525882714283529513062317032733374347235673660409244835012

128814571745201522532468266528493022318634903770403042744506472649365137533155185699587560456211637265296683683369807124780484308725901295581007510567110371148811921123401274513137135181388814249159311745119511

52925982716582749250101331094511701124111308214331154791654817552185011940420267210952189122659234022412324822255022616526811274422805928662292533204534613358283700339247413704339045319471704895050668

————————


Water

3900 MPV™

Capacities (USCS)


189218275339403466530593657721848975110212301357148416111739186619932120224823752502262927562884301131383265390245384856

Series 3905 - 3916 Type PV & MV PilotsSTANDARD BORE - ORIFICE CAPACITIES - STEAM

(USCS Units)


Capacities in pounds per hour saturated steam.

52760876994711241302147916561834201123662721307634313786414144964851520655615916627166266980733576908045840087559110108851265913547

134915551968242228763330378442384692514660546962787087789686105931150112409133171422515133160411694917857187651967320581214892239723304278443238434654

3161364446115674673878018865992810991120551418216308184352056222689248162694329069311963332335450375773970441830439574608448211503385246554591652257586081177

61897135902811110131921527417356194382152023603277673193136095402594442348587527515691661080652446940873572777368190086064902299439398557102721106885127706148526158937

1096612643159971968623375270643075334443381324182149199565776395571334787128609093468100847108225115603122981130360137738145116152494159873167251174629182007189386226277263168281614

275013170740117493685862067871771238637495625104877123380141882160385178888197391215894234396252899271402289905308408326910345413363916382419400922419424437927456430474933567447659961706218

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279


Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750

33738849160471883194510581171128515111738196521912418264528723098332535523778400542324459468549125139536555925819695280868653

8649971261155218432134242527163007329838794461504356256207678973707952853491169698102801086211443120251260713189137711435314934178442075322207

2212255032263970471454586203694776918435992311411128991438815876173641885220340218282331724805262932778129269307583224633734352223671038198456395308056801

49045654715488041045312103137531540317053187032200225302286023190135201385014180045100484005169954999582996159864898681987149774797780978139684696101194117693125942

7462860310885133951590618416209262343725947284573347838499435194854053560585816360268622736437866483684887059372598746103767108787113808118829123849128870153973179076191628

190002190527715341074049846889532815967266064724558523898021110804123586136369149152161935174718187501200284213066225849238632251415264198276981289763302546315329328112392026455940487898

446685149865158801849521011023612526214028815531417034020039323044526049729054932060135065338070541075744081047086250091453096656101859107062112265117468122771127974133177138392164410719041147034


Steam

3900 MPV™

Capacities (USCS)

3900 (SRV-1/Q2.02)3900.61

Series 3905 - 3916 Type PV & MV PilotsFULL BORE - ORIFICE CAPACITIES - STEAM

(USCS Units)


Capacities in pounds per hour saturated steam.


23982765349843055111591867257532833991451075912372139861559917213188262044022053236672528126894285083012131735333483496236575381893980241416494835755161585

368914253153813662237863391042103452115862128272140682165501190321215140239960264780289599314419339239364058388878413697438517463337488156512976537795562615587435612254637074761172885270947319

103413119225150850185637220424255211289999324786359573394360463935533509603084672658742233811807881382950956102053110901051159680122925412988291368403143797815075521577127164670117162761785850213372324815952655531

934610775136331677719921230652620929353324973564141929482175450560793670817336979657859459223398521104809111096117384123672129960136248142536148824155112161400192840224280240000

1.5" FB1.622

2" FB2.764

3" FB6.321

4" FB10.76

6" FB24.95

8" FB44.18

10" FB69.94

Set Press.(psig)

152030405060708090

100120140160180200220240260280300320340360380400420440460480500600700750

653247531295289117264139238161213183187205162227137249111293060337009380958424908468857512806556755600704644653688602732551776501820450864399908348952297996246104019510841441128093134783915675851677457

15909183422320728559339113926344615499675531960670713748207892782103486114189124893135597146301157004167708178412189116199819210523221227231931242635253338264042274746328265381784408543

40864711596173368711100851146012835142101558518334210842383326583293323208234831375814033143080458304857951329540785682859577623276507767826705768432398071104945


Steam

3900 MPV™

Valve Installation


Valve ConnectionsThe CONSOLIDATED 39MPV Series flanged valves are equipped withANSI B16.5 flanges. For other standards, contact the factory foryour needs.The facing on raised flanges is a spiral finish, 125 to 250 micro inchroughness (Ra).All flange drilling straddles the centerlines of the valve.

Handling and StorageSafety relief valves should be handled carefully. The internal parts of apilot operated safety relief valve are precision machined and fittedtogether to maintain perfect alignment. Rough handling may damage theexternal tubing, pilot, and main valve seats or may cause misalignmentsufficient to incur leakage or erratic operation. Safety relief valves areshipped with a protective covering over the inlet and the outlet. This is toprevent damage to the flanged surfaces and to prevent entry of foreignmaterial into the valve. If the valves are to be stored before installation,the protective covering should be left intact until installation. A clean, drystorage area is recommended. Valves should always be protected with asuitable covering to prevent entry of foreign material.

Inlet PipingPilot operated safety relief valves must be installed in a vertical uprightposition. The inlet piping to the valve should be short and direct from thevessel or equipment being protected. The connection to the vessel shouldbe provided with a radius to permit smooth flow to the valve. Sharpcorners should be avoided. Should this not be practical, then the inletshould be swaged out at least one additional pipe diameter.In any event, the pressure drop from the vessel to the valve should notexceed 3% of set pressure when the valve is flowing full capacity. In noevent should the inlet piping be smaller in diameter than the inletconnection of the valve.

Outlet PipingAlignment of the internal parts of a pilot operated safety relief valve isimportant to ensure proper operation. Although the valve body willwithstand a considerable mechanical load, unsupported discharge pipingshould not impose loads any higher than that stated in the TechnicalInformation section of this catalog, consisting of more than a companionflange, long radius elbow and a short vertical pipe. Care should be takento ensure thermal expansion of piping and supports does not producestrains on the valve. Spring supports are recommended where necessaryto avoid this condition. The discharge piping should be designed to allowfor vessel expansion as well as expansion of the discharge pipe itself. Thisis particularly important on long discharge lines.Consideration should be given to discharge pipe movement resulting fromwind loads. Any oscillation of the discharge piping introduces stressdistortion in the valve body, and the resultant movement of the internalparts may cause leakage.

Valve Installation

In-House Review

13900Features & Benefits

13900 (SRV-1/Q2.02)13900.1

IntroductionThe CONSOLIDATED 13900 pilot operated safety relief valve seriesis designed to contribute to the overall efficiency and profitabilityof plant operations.For system applications that require the releasing of large dischargecapacities, the CONSOLIDATED 13900 valve series provides maximumreliable working economy and a simple efficient valve design. It alsofeatures a valve configuration that facilitates valve installation and in-line valve maintenance.

Greater Total System EfficiencyThe main valve can handle extremely large relieving capacities, in excessof 3,000,000 lbs of steam per hour. It has a seven to one dischargecapacity over “T” type orifice, and a two to one discharge capacity over“W” type orifice.

Improved DesignThe total valve external configuration is considerably smaller in size, andthe valve is lighter in weight than a comparable spring loaded valve.Because of these features, less space is required for valve installation. A simple, efficient, and reliable direct acting valve design with fewcomponents, eliminates the need for excessive spare parts inventory andreduces maintenance time.

Easy Installation and MaintenanceValve configuration is considerably smaller in size and lighter in weightthan a comparable spring loaded valve. This facilitates ease ofinstallation, field handling, testing, and valve maintenance.Valve maintenance is relatively simple and straight forward. The simplevalve design means fewer parts and a reduction in required partsinventory. Fewer valve parts mean that less can go wrong, malfunctionscan be readily diagnosed, and maintenance cost and process downtimecan be kept to a minimum.To facilitate valve maintenance, all main valve components areremovable through the top bonnet of the valve. The pilot valve can befield tested and repaired without breaking inlet and outlet pipingconnections on the main valve. The pilot valve opening and closing iseasily adjusted on a small test facility.

DescriptionThe 13900 pilot operated safety valve is an ASME Section VIIIapproved valve intended for use on compressible fluids. The valvedesign is simple. It consists of a small conventional, fail-safe pilotsafety valve and main valve.Overcompression of the main valve seat O -Ring, located between thedisc and bushing, is eliminated by the metal-to-metal contact bearingsurfaces between the disc and bushing. O -Ring seal blowout is eliminatedby removing the pressure from behind the O -Ring via two small slotswhen the valve is open and flowing. A condensate drain hole in the discfacilitates drainage of any accumulated moisture in the upper disc cavity. The spring loaded U - shaped Teflon® guide seal provides increased seattightness as system pressure increases. The teflon material minimizesfriction on the main disc and allows for reliable, dependable, andrepeatable disc action. The seal spring load insures sealing at all times.Teflon® guide rings eliminate metal-to-metal contact between thedisc and guide, and eliminates friction. Main valve disc action isrepeatable and reliable.The pilot valve action directly controls the pressure forces on the mainvalve disc and eliminates the need for a transfer valve. System pressurewhich actuates the pilot valve is transmitted through a simple, full flowdesign sensing tube. The sensing tube eliminates small orifice controlparts and their possible clogging characteristics and is enclosed within thevalve body which protects it from damage and freezing.Pilot valve blowdown adjustment can be set independently of the mainvalve. Adjustment and setting can be made prior to installing on themain valve.The pilot valve disc is a metal seated design that is easily serviced andprovides a seat tightness to 95% of set pressure.The main unloading valve has a large orifice up to 200 sq. inches,which reduces the number of valves required for overpressureprotection. Installation costs for additional header nozzles and exhaustlines are eliminated.The O -Ring seat seal design and the spring loaded Teflon® rings assuretightness, valve integrity, and facilitates valve maintenance.

Table of Contents

Features & Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13900.1Scope of Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13900.2Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13900.3Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13900.5Dimensions & Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13900.6Capacities (USCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13900.7


13900.2Consolidated Pilot Operated Safety Relief Valves 13900 (SRV-1/Q2.02)

The 13900 pilot operated safety relief valve is designed for steamapplications where pressures range from 50 psig to 300 psig andtemperature ranges from 250°F (121°C) to 550°F (288°C). Thetemperature limit is applied to the valve to insure that the Teflon® sealrings will maintain sealing integrity.The 13900 valve can be used on any compressible fluid within thepressure and temperature limits of the valve provided the fluid mediaexhibits characteristics similar to saturated steam. For applications otherthan steam, the open lift lever cap should be reviewed for adequacy. Ifanother cap design is required, it should be so stated.The 13900 series of valves are available in four sizes, 114, 143, 176,and 200 sq. in. For all sizes except the 200 the largest possible relievingcapacity is supplied for the valve inlet size specified.

For those applications where discharge pressures at the valve outletexceeds 10% of the pilot valve set pressure, or where economics dictatethat higher discharge pressures be required, the pilot valve can beexhausted separately and the discharge pressure of the main valve can beallowed to increase above the limit of 10% of the pilot valve set pressure.Typical valve applications include, boiler feed pump turbines, flash tanks,steam lines and deareators.

CAUTION: These valves are not to be used on power boilers.

1 22" 150# flange is not covered by ANSI B16.5. Drilling is (20) 1-3/8 dia. holes on a 27-1/4dia. bolt circle.

2 Two holes on outlet drilling are tapped and threaded 1-1/8 - 7UNC - 2B TH’D, 1-1/2 deep.

Application

13900 Scope of Design

Valve Type Orifice Area InletANSI B16.5

OutletANSI B16.5

Inlet Pressure /Temperature Limits

50 psig - 300 psig250°F - 550°F

50 psig - 300 psig250°F - 550°F

50 psig - 300 psig250°F - 550°F

50 psig - 300 psig250°F - 550°F

16" 300# R.F.

18" 300# R.F.

20" 300# R.F.

20" 300# R.F.

114.0 sq. in.

143.1 sq. in.

176.7 sq. in.

201.0 sq. in.

18" 150# R.F.2

22" 150# R.F.1

24" 150# R.F.

24" 150# R.F.

13906-114

13906-143

13906-176

13906-200

13900Materials

13900 (SRV-1/Q2.02)13900.3

1

10

52

212624

22

23

19

18

56

8

9

7

116

24

49

3

138

4544

12

20

5

57

15

14

16

46

12

PartPart Material

1 Main Base SA216 Grade WCC Carbon Steel2 Seat Bushing CPF8M Stainless Steel3 Seat Bushing Screw Jam Nut Carbon Steel (Cadmium Plated)4 Retainer Lock Ring Carbon Steel (Nickel Plated)5 O-Ring Retainer 410 Cond. A Stainless Steel6 Disc Drain Plug 316 SS7 Main Disc CA6NM Stainless Steel8 Main Guide CA15 Stainless Steel9 Back-up Ring Teflon (Glass Filled)10 Seat Bushing Retainer Screw 416 Cond. A Stainless Steel11 O-Ring Seat Seal Teflon12 Discharge Fitting Seal Teflon13 Guide Seal Virgin Teflon Cover Elgiloy Spring14 Floating Washer 410 Cond. T Stainless Steel15 Floating Washer Retainer 410 Cond. T Stainless Steel16 Floating Washer Retainer Lock Ring PH15-7MO Stainless Steel

Sensing Tube Assembly17A Upper Tube 304 SS17B Lower Tube TP304 Stainless Steel17C Tube Flange 1020 Carbon Steel

Material

18 Bonnet Gasket 304SS Nobestos Filled19 Bonnet SA216 Grade WCC Carbon Steel20 Pilot Base 304 SS21 Pilot Base Flange SA105 Carbon Steel22 Base Stud B7 Alloy Steel23 Base Stud Nut 2H Steel24 Eye Bolt Lock Nut Carbon Steel25 Pilot Bonnet Gasket Soft Iron26 Eye Bolt Carbon Steel27 Adjusting Ring Pin 416 Cond. A Stainless Steel28 Adjusting Ring CA15 Stainless Steel

Pilot Bonnet Assembly29A Bonnet SA216 Grade WCC Carbon Steel29B Guide 316L SS29C Pin 304 SS30 Bottom Spring Washer Carbon Steel (Zinc Plated)

Spindle Assembly31A Spindle 1213 Carbon Steel31B Spindle Collar 410 Cond. T Stainless Steel32 Top Spring Washer 1213 Carbon Steel

17C

17A

43A

43B

43A

17B

13900Materials


37

36

35

33

32

27

2553

34

38

39

30

28

40

Part MaterialPart Material

33 Lever Malleable Iron34 Compression Screw Locknut 1213 Carbon Steel35 Release Nut 410 Cond. T Stainless Steel36 Release Locknut Carbon Steel37 Cap Malleable Iron38 Lever Pin Steel (Zinc Plated)39 Cap Lock Screw Carbon Steel40 Compression Screw 416 SS41 Spring: 250°F - 400°F Chrome Alloy

Spring: 401°F - 550°F Inconel42 Pilot Disc Assembly42A Disc 410 Cond. T Stainless Steel42B Disc Holder 304 SS42C Disc Collar 304 SS42D Retainer Ring PH15-7MO Stainless Steel

Discharge Tube Assembly43A Fitting SA105 Carbon Steel43B Discharge Tube SA105 Carbon Steel44 Bonnet Stud B7 Alloy Steel45 Bonnet Stud Nut 2H Steel46 Main Bonnet Plug 304 SS49 Main Base Plug 304 SS52 Sensing Tube Flange Gasket 304SS Nobestos Filled53 Adjusting Ring Pin Gasket Soft Iron56 Disc Spring EHW Tungsten57 Disc Spring Ring 410 Cond. A Stainless Steel

42A42B

29B

29C

29A

41

31A

31B

42D

42C

13900Options

13900 (SRV-1/Q2.02)13900.5

Standard OptionsThe CONSOLIDATED 13900 Series Valves are available with the following options:

Omit Pilot Discharge PipingPilot Valve Vent to area other than main valve outlet.

Dump Valve DesignRather than having a spring loaded safety valve as its pilot valve, which opens automatically at the pre-determined set pressure, the dump valve has apilot which is operated by an electrical signal so that the valve may be opened at any time independently of the steam pressure.



Size Type A B C D Weight

13900 Series - Dimensions & Weights - (USCS Units)Dimensions (Inches) and Weights (pounds)

16 x 18

18 x 22

20 x 24

20 x 24

17

18

20

20

21

22

25

25

13906-114

13906-143

13906-176

13906-200

48

49-1/2

54

54

2-1/4

2-3/8

2-1/2

2-1/2

1900

2500

3850

3850

Size Type A B C D Weight

13900 Series - Dimensions & Weights - (Metric Units)Dimensions (Millimeters) and Weights (Kilograms)

16 x 18

18 x 22

20 x 24

20 x 24

431.8

457.2

508.0

508.0

533.4

558.8

635.0

635.0

13906-114

13906-143

13906-176

13906-200

1219.2

1257.3

1371.6

1371.6

57.2

60.3

63.5

63.5

861.8

1134.0

1746.0

1746.0

C

A

DB


13900 (SRV-1/Q2.02)13900.7

Series 13900 Pilot Operated Safety Relief ValvesORIFICE CAPACITIES - STEAM

(USCS Units)

Capacities based on Set Pressure Plus 10% or3 psi overpressure, whichever is greater.

Capacities in Pounds per Hour saturated steam.

Set Press. - psig 114.0 sq. in. 143.1 sq. in. 176.7 sq. in. 201.0 sq. in.

50

60

70

80

90

100

120

140

160

180

200

220

240

260

280

300

358876

415513

472151

528788

585426

642063

755338

868613

981888

1095164

1208439

1321714

1434989

1548264

1661539

1774814

450483

521578

592673

663768

734863

805958

948149

1090339

1232529

1374719

1516909

1659099

1801289

1943479

2085669

2227859

556257

644046

731834

819622

907410

995198

1170775

1346351

1521927

1697504

1873080

2048656

2224233

2399809

2575386

2750962

613274

710061

806847

903634

1000420

1097207

1290780

1484353

1677926

1871499

2065072

2258645

2452218

2645791

2839364

3032937

Steam



Series 13900 Pilot Operated Safety Relief ValvesORIFICE CAPACITIES - AIR

(USCS Units)

Capacities based on Set Pressure Plus 10% or3 psi overpressure, whichever is greater.

Capacities in standard Cubic Feet per Minute Air @ 60°F.

Set Press. - psig 114.0 sq. in. 143.1 sq. in. 176.7 sq. in. 201.0 sq. in.

50

60

70

80

90

100

120

140

160

180

200

220

240

260

280

300

127904

148090

168276

188462

208648

228834

269205

309577

349949

390320

430692

471064

511435

551807

592179

632550

160554

185892

211231

236569

261908

287246

337924

388601

439278

489955

540632

591309

641986

692663

743340

794017

198252

229540

260828

292116

323404

354692

417268

479844

542421

604997

667573

730149

792725

855301

917877

980453

218573

253068

287563

322058

356553

391048

460039

529029

598019

667009

735999

804990

873980

942970

1011960

1080950

Air

Codes and Standards

Codes & Standards (SRV-1/Q2.02)CS.1

The following codes and standards that are applicable to the design, selection and use of pressure relief valves. Some of these are applicable to specificindustries, such as those set up by the American Petroleum Institute (API), American Gas Association (AGA), American National Standards Institute (ANSI),American Society of Mechanical Engineers (ASME) and Manufacturers Standardization Society of the Valve and Fittings Industry (MSS). Other codes andstandards may apply depending on the country in which pressure relief valves will be installed. When specifying pressure relief valves consideration mustbe given to local codes that apply to a specific industry and the application in question.

Product intended for installation within the United States and those countries that recognize these standards the following is listing organizations that supplystandards that are applicable to pressure relief valves:

American National Standards Institute11 West 42nd Street, New York, NY 10036(212) 642-4900(212) 764-3274http://www.ansi.org

American Gas Association1515 Wilson Boulevard Suite 100, Arlington, VA 22209(703) 841-8400http://www.aga.org

American Petroleum Institute1220 L Street Northwest Suite 900, Washington, DC 20005(202) 682-8000 http://api-ec.api.org

American Society of Mechanical Engineers3 Park Avenue Fl 21, New York, NY 10016(212) 591-7000 http://www.asme.org

Manufacturers Standardization Society of Valveand Fittings Industry127 Park Street Northeast, Vienna, VA 22180(703) 281-6613http://www.mss-hq.com

Codes and Standards

Consolidated Safety Relief Valves Codes & Standards (SRV-1/Q2.02)CS.2

NACE International - The Corrosion Society1440 South Creek DriveHouston, Texas 77084-4906281-228-6200http://nace.org

National Board of Boiler and Pressure Vessel Inspectors1055 Crupper AvenueColumbus, OH 43229614-888-8320http://www.nationalboard.org

NFPA (National Fire Protection Association)1 Batterymarch Park Quincy, MA 02269-9101 Telephone: (617) 770-3000 http://www.nfpa.org

U.S. Department of Transportation Library400 7th St. SW, Room 2200Washington, DC 20590202-366-0746 http://www.dot.gov

Final Revision 4

Technical Information (SRV-1/Q2.02)TI.1

Technical InformationConversion

Pressure (psi = pounds per square inch)

kPa x 0.145 = psibar x 14.504 = psiAtmosphere x 14.7 = psiInches of mercury x 0.4912 = psiKilograms per square centimeter x 14.22 = psiAtmosphere x 1.033 = kilograms per square centimeterInches of mercury x 0.0345 = kilograms per square centimeter

Dimensions

Centimeters x 0.3937 = inchesCentimeters x 0.01 = metersCubic inches x 16.39 = cubic centimetersFeet x 0.3048 = metersInches x 25.4 = millimetersFeet x 12 = inchesMeters x 100 = centimetersMeters x 39.37 = inchesYards x 0.9144 = metersSquare inches x 6.4516 = square centimetersSquare inches x 645.16 = square millimeters

Weights

Pound x 0.4536 = kilogramKilograms x 35.27 = ouncesPounds x 0.0005 = short tons (2000 lbs)Pounds x 0.000454 = metric tonsPounds x 16 = ouncesTons (metric) x 1.102 = short tons (2000 lbs)Short tons x 907.2 = kilograms

Temperature

Equivalents and Conversion Factors

Table of Contents

Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.1Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.3Reaction Forces and Valve Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.5Rupture Disks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.6Seat Tightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.7Piping Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.10Temperature Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.13Flange Finishes and Natural Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.14Valve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.15API RP 520, Part II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.16O-Ring Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TI.22

Consolidated Safety Relief Valves Technical Information (SRV-1/Q2.02)TI.2

Technical InformationConversion

Flowrate (All gallons are U.S. unless otherwise noted)

Pounds per hour x 0.4536 = kilogram per hourKilograms per minute x 132.3 = pounds per hourBarrels per day x 0.0292 = gallons per minuteCubic feet per second x 448.833 = gallons per minuteCubic meters per hour x 4.4 = gallons per minute

Gallons of liquid per minute x 500 x specific gravity = pounds per hourof liquid (70˚F)

Liters per hour x 0.0044 = gallons per minutePounds per hour x 6.32 / molecular weight = cubic feet per minute

Pounds per hour liquid x 0.002 / specific gravity = gallons per minute ofliquid (70˚F)

Tons (metric) per day x 91.8 = pounds per hourGallons per minute x 0.06309 = liters per secondGallons per minute x 3.7854 = liters per minuteGallons per minute x 0.2271 = cubic meters per hourGallons per minute x 500 = pounds per hour

SCFM (Standard Cubic Feet Per Minute) x 1.608 = normal cubic meterper hour (760 mmHG and 0˚C)

SCFM x 0.02679 = normal cubic meter per minute (760 mmHG and 0˚C)

SCFM x 1.699 = cubic meters per hour (101 kPa and 16˚C)

SCFM x 1.725 = cubic meters per hour (1 ATM and 20˚C)

Volumes (All gallons are U.S. unless otherwise noted)

Cubic centimeters x 0.06102 = cubic inchesCubic feet x 7.48055 = gallonsCubic meters x 264.17 = gallonsGallons x 231 = cubic inchesGallons (Imperial) x 277.4 = cubic inchesGallons x 3785 = cubic centimetersGallons x 0.833 = gallons (Imperial)Gallons x 3.785 = litersLiters x 1000 = cubic centimetersLiters x 0.2642 = gallonsBarrels (petroleum) x 42 = gallons

Other

Foot pounds x 0.001286 = BTUGallons of water x 8.345 = pounds (70˚F)Horsepower (boiler) x 34.5 = pounds water per hour evaporationSpecific Gravity (gas or vapor) x 28.97 = molecular weight

Use of SI Units

The ASME Code has adopted the following practice for the use of“English” and Metric Units. A reprint of that statement is given below:

It is the policy of ASME Council that SI units of measurement beincluded in all papers, publications, and revisions of ASME Codes andStandards. In accordance with this policy, each ASME Policy Board,Technical Division, or Committee has the option of giving preference toU.S. customary or SI Units.

When U.S. customary units are given preference, the SI equivalentshall be given in parentheses or in a supplementary table. Whenpreference is given to SI units, the U.S. customary units may beomitted or given in parentheses. Each Transactions Journal has specificinstructions as to which of these options to use. This manual illustratesuse of the second option: SI (U.S. customary).

For complete details regarding SI usage, consult ASME Guide SI-1,“ASME Orientation and Guide for Use of SI (Metric) Units”, availablefrom the ASME Order Department.


Technical InformationTerminology

AccumulationAccumulation is the pressure increase over the maximum allowable working pressure of the vessel during discharge through the pressure relief valve,expressed as a percentage of that pressure, or actual pressure units.

Back PressureBack pressure is the pressure on the discharge side of a safety relief valve. (Also see “Built-Up Back Pressure” and “Superimposed Back Pressure”, below).

BlowdownBlowdown is the difference between set pressure and reseating pressure of a pressure relief valve, expressed as a percentage of the set pressure, or actualpressure units.

Built-Up Back PressureBuilt-up back pressure is pressure which develops at the valve outlet as a result of flow, after the safety relief valve has been opened.

ChatterChatter is the abnormal, rapid reciprocating motion of the movable parts of a valve in which the disc contacts the seat.

Closing PressureClosing pressure is the point at which the valve re-closes. Closing pressure on a test stand may differ from the blowdown, which is the closing pressureunder actual service conditions.

Cold Differential Test Pressure (CDTP)Cold differential test pressure is the set pressure at which the valve is adjusted to open on the test stand. This pressure includes the corrections for backpressure and/or temperature service conditions. (CDPT replaces former term CDS. For Consolidated series 1900 setting instructions, refer to maintenancemanual CON-2).

Differential Between Operating and Set PressuresValves in process service will generally give best results if the operating pressure does not exceed 90% of the set pressure. However, on pump andcompressor discharge lines, the differential required between the operating and set pressures may be greater because of pressure pulsations coming froma reciprocating piston. It is recommended that the valve be set as high above the operating pressure as possible.

FlutterFlutter is the abnormal, rapid reciprocating motion of the movable parts of a valve in which the disc does not contact the seat.

LiftLift is the actual travel of the disc away from the closed position when a valve is relieving.

Maximum Allowable Working PressureMaximum allowable working pressure is the maximum gauge pressure permissible in a vessel at a designated temperature. A vessel may not be operatedabove this pressure, or its equivalent, at any metal temperature other than that used in its design. Consequently, for that metal temperature, it is thehighest pressure at which the primary safety relief valve is set to open.

Operating PressureThe operating pressure is the gauge pressure to which the vessel is normally subjected in service.

Terminology For Safety Relief Valves


Technical InformationTerminology

OverpressureOverpressure is a pressure increase over the set pressure of the primary relieving device. Overpressure is similar to accumulation when the relieving deviceis set at the maximum allowable working pressure of the vessel. Normally, overpressure is expressed as a percentage of set pressure.

Rated CapacityRated capacity is the percentage of measured flow at an authorized percent overpressure permitted by the applicable code. Rated capacity is generallyexpressed in pounds per hour (lb/hr), kilograms per hour (kg/hr) for vapors; standard cubic feet per minute (SCFM), normal cubic meters per minute(LNCM/min) or m3/min for gasses; and in gallons per minute (GPM), or liters per minute (L/min) for liquids.

Relief ValveA relief valve is an automatic pressure-relieving device, actuated by static pressure upstream from the valve. This type of valve is used primarily forliquid service.

Safety Relief ValveA safety relief valve is an automatic pressure-relieving device which may be used as either a safety or relief valve, depending upon application.

Safety ValveA safety valve is an automatic pressure-relieving device actuated by the static pressure upstream of the valve, and characterized by rapid opening or popaction. This type of valve is used for steam, gas or vapor service.

Seat Tightness PressureSeat tightness pressure is the specified inlet static pressure at which a quantitative seat leakage test is performed in accordance with a standard procedure.

Set PressureSet pressure is the gauge pressure at the valve inlet, for which the safety relief valve has been adjusted to open under service conditions. In liquid service,set pressure is determined by the inlet pressure at which the valve starts to discharge. In gas or vapor service, the set pressure is determined by the inletpressure at which the valve pops.

SimmerSimmer is characterized by the audible passage of a gas or vapor across the seating surfaces just prior to “pop”. The difference between this “start toopen pressure” and the set pressure is simmer, and is generally expressed as a percentage of set pressure.

Superimposed Back PressureSuperimposed back pressure is the pressure in the discharge header before the safety relief valve opens. This can be further defined as follows:

Constant SuperimposedThis type of back pressure remains essentially at a fixed value (constant) and exists (superimposed) continuously prior to and during opening of thevalve. (e.g., 20 psig/1.38 bar).

Variable SuperimposedThis type of back pressure varies or changes over a range from a minimum to a maximum, or vice versa. (e.g., 0 to 20 psig/1.38 bar). The actualback pressure at any specific time depends on conditions in the piping system to which the outlet of the valve is connected.

Valve TrimValve trim includes the nozzle and disc.


Technical InformationReaction Forces and Valve Lift

For various reasons, information is needed concerning the response of the valve lift with respect to pressure beneath the valve. The following informationsupplies general data.

Chart 6, below, applies to 1900, 1982, 1990, 19000 and 820000 series valves on compressible fluids. These valves achieve approximately 65% oftheir total rated lift at opening pressure and achieve full rated lift at 10% overpressure.

Lift and Closing Curvesfor Safety Relief Valves

% Lif

t or C

apac

ity

90

80

70

60

50

40

30

10

0

0 0.93P 0.98P P 1.1P Pressure

20

OverpressureBlowdown

100

SRV Compressible Fluid Lift CurveP = Set Pressure

Rate of increase or decreasedepends on the rate of

pressure increase or decrease.

65%

A thrust is exerted on a pressure relief valve when it is discharging. Thisthrust is equal to the mass flow rate times exit velocity, plus outlet flangearea, times the difference between exit pressure and atmosphericpressure. This thrust, acting opposite to the direction of flow, may besignificant, particularly when relieving gases or vapors. AlthoughCONSOLIDATED safety relief valves are designed to withstand this thrust,stresses developed in piping or equipment should be investigated. It isespecially important when the valve is discharging to atmosphere throughan unsupported stack.

CONSOLIDATED’s sizing program SRVS provides valve specific calculation ofreaction forces.Determination of outlet reaction forces is the resposnsibility of thedesigner of vessel and/or piping.Reaction force information obtained from SRVS is for technical advice andassistance only. No obligation or liability for this advice and assistance isassumed. Use of the valve specific information is at the buyer’s risk.

Reaction Forces Due to Valve Discharge(Gases & Vapors )


Technical InformationRupture Disks

Pressure Relief Valves Used in Combination withRupture Disks

In all pressurized systems, the overpressure relief can be handled with avariety of mechanisms which include pressure relief valves, rupture disksor combinations of the two devices.

The following guidelines apply when pressure relief valves are used incombination with rupture disks.

ASME B & PVC, Section VIII Rules:

Paragraph UG -132 of the ASME Code does permit the use of rupturedisks. The use of rupture disks at the valve inlet, in combination withpressure relief valves, will fall into one of the two following categories:

(1) The rupture disk is not capacity certified in combination withthe pressure relief valve.

(a) In that case, the ASME stamped rated capacity of thepressure relief valve must be multiplied by 0.9 (reducing thevalve’s rated capacity). Therefore, only 90% of the valvecapacity can be used as credit in determining availablerelieving capacity for the system.

(2) The rupture disk is capacity certified in combination with thepressure relief valve.

(a) It is permitted to use a combination capacity factordetermined by tests conducted under ASME rules. The ASMEstamped rated capacity of the pressure relief valve must bemultiplied by this factor when determining allowable relievingcapacity of the valve/rupture disk combination. The capacitycalculated using the combination capacity factor is to be usedin valve sizing requirements.

(b) Each rupture disk design must be tested in combinationwith each pressure relief valve design so that a combinationcapacity factor can be determined. Factors are valid for onlythe materials tested.

Other ASME B & PVC, Section VIII Guidelines:

(1) Pressure relief valves used in combination with rupture disksare to be marked with the capacity established under 2(a) above.The markings may be placed on the valve or the rupture diskdevice. The markings shall include the following:

(a) Name of the valve Manufacturer

(b) Design or type number of the valve

(c) Name of the rupture disk Manufacturer

(d) Design or type number of the rupture disk

(e) Capacity or combination capacity factor

(f) Name of the organization responsible for this marking(this could be the valve Manufacturer, rupture diskManufacturer, vessel user, or vessel Manufacturer).

(2) The space between the rupture disk and pressure relief valveshall be provided with a pressure gauge, a try cock, free vent orsuitable telltale indicator. This arrangement permits detection ofdisk rupture or leakage.

Safety Relief Valves for Closed Water Heaters

Heat exchangers, which utilize tubes as a method of transferring heat,present unique sizing problems. The tube side (flow through the tubes)is generally not a problem area, but the shell side sizing can becomplicated by the fact that tube ruptures can occur.

The following techniques apply to valve sizing on shell sides of heatexchangers:

(1) When pressure, temperature and flow conditions are specified,valves will be sized in accordance with ASME B & PVC, Section VIIIrules. For flashing water, valves will be sized on the basis ofestimating back pressure due to flashing. That back pressure will beused in calculations for required orifice area calculations.

(2) When it is stated that valves are to be sized in accordancewith the Heat Exchanger Institute Standard for Closed FeedwaterHeaters, Section 6, specifications must supply all appropriateinformation to allow verification of sizing. If valve sizing under HEIguidelines results in valves smaller than that stated in (1), thesizing must be resolved before an ASME Code stamp is allowed onthe valve nameplate.

(3) The following information is necessary to ensure proper sizing:

(a) Set pressure or shell design pressure

(b) Normal operating temperature

(c) Relieving temperature at the valve inlet in event oftube rupture

(d) Shell design temperature

(e) Relieving capacity required at relieving temperature (GPMor lb/hr)

(f) Back pressure condition- at normal conditions- at relieving conditions

(g) Specify percentage of flashing occurring

(h) Specify the valves to have “UV” symbols stamped on thenameplate and the capacity indicated in “GPM” at 70˚F

(i) Liquid trim components to be installed in the valve

Valves Used in Combination with RuptureDisks Valves for Closed Water Heaters


Technical InformationSeat Tightness

Seat Tightness of Pressure Relief Valves(Reprint of API RP 527)Section 1 - Scope

This standard describes methods of determining the seat tightness ofmetal and soft seated pressure relief valves, including those ofconventional, bellows, and pilot operating designs.

The maximum acceptable leakage rates are defined for pressure reliefvalves with set pressures from 15 pounds per square inch gauge (103kilopascals gauge) to 6,000 pounds per square inch gauge (41,379kilopascals gauge). If greater seat tightness is required, the purchasershall specify it in the purchase order.

The test medium for determining the seat tightness - air, steam, or watershall be the same as that used for determining the set pressure of the valve.

For dual service valves, the test medium - air, steam, or water - shall bethe same as the primary relieving medium.

To ensure safety, the procedures outlined in this standard shall beperformed by persons experienced in the use and functions of pressurerelief valves.

Section 2 - Testing with Air

2.1 Test Apparatus

A test arrangement for determining seat tightness with air is shown inFigure 1. Leakage shall be measured using a tube with an outsidediameter inch (7.9 millimeters) and a wall thickness of 0.035 inch(0.89 millimeter). The tube end shall be cut square and smooth. Thetube opening shall be inch (12.7 millimeters) below the surface of thewater. The tube shall be perpendicular to the surface of the water.

Arrangement shall be made to safely relieve or contain body pressure incase the valve accidentally pops (see Figure 2).

2.2 Procedure2.2.1 Test MediumThe test medium shall be air (or nitrogen) near ambient temperature.2.2.2 Test ConfigurationThe valve shall be vertically mounted on the test stand, and the testapparatus shall be attached to the valve outlet, as shown in Figure 1.All openings - including but not limited to caps, drain holes, vents,and outlets shall be closed.2.2.3 Test PressureFor a valve whose set pressure is greater than 50 pounds persquare inch gauge (345 kilopascals gauge), the leakage rate inbubbles per minute shall be determined with the test pressure atthe valve inlet held at 90% of the set pressure. For a valve set at

50 pounds per square inch gauge (345 kilopascals gauge) or less,the test pressure shall be held at 5 pounds per square inch (34.5kilopascals) less than the set pressure.2.2.4 Leakage TestBefore the leakage test, the set pressure shall be demonstrated,and all valve body joints and fittings should be checked with asuitable solution to ensure that all joints are tight.

Before the bubble count, the test pressure shall be applied for atleast one minute for a valve whose nominal pipe size is two inches(50 millimeters) or smaller; two minutes for a valve whosenominal pipe size is 2 , 3 or 4 inches (65, 80, or 100millimeters); and five minutes for a valve whose nominal pipe sizeis six inches (150 millimeters) or larger. The valve shall then beobserved for leakage for at least one minute.

2.3 Acceptance CriteriaFor a valve with a metal seat, the leakage rate in bubbles per minuteshall not exceed the appropriate value in Table 1. For a soft seated valve,there shall be no leakage for one minute (zero bubbles per minute).

Flanged or threaded outlet adapterfor pressure relief valve

Tube with outside diameter of 5/16 inch (7.9 mm)and wall thickness of 0.035 inch (0.89 mm)

NOTE: See Figure 2 for an example of a device to relieve body pressure in case thevalve accidentally pops.

Fig. 1 - Apparatus to Test Seat Tightness with Air

Water

1/2 inch(12.7 mm)



Table 1 - Air Test - Maximum Seat Leakage Rates for Metal-Seated Pressure Relief Valves

15 - 1000 0.103 - 6.896 40 0.60 0.017 20 0.30 0.00851500 10.3 60 0.90 0.026 30 0.45 0.0132000 13.0 80 1.20 0.034 40 0.60 0.0172500 17.2 100 1.50 0.043 50 0.75 0.0213000 20.7 100 1.50 0.043 60 0.90 0.0264000 27.6 100 1.50 0.043 80 1.20 0.0345000 38.5 100 1.50 0.043 100 1.50 0.0436000 41.4 100 1.50 0.043 100 1.50 0.043

1/2 inch (12.7 mm)

Water Level Control Hole - maintain1/2 inch (12.7 mm) from bottom

of tube to bottom of hole

Safety ValveOutlet Tube - cut endsmooth and square

Membrane - seals during test andbursts if valve accidentally opens

Cup - weld to detector

Air Pressure

C Clamp

Fig. 2 - Air Test - Device to Relieve Body Pressure Caused by Accidental Popping of the Valve

Soft Rubber Gasket - attach to faceof detector to prevent leakage

Approximate Leakageper 24 Hours

Approximate Leakageper 24 Hours

Set Pressureat 60˚F (15.6˚C)

Pounds perSquare Inch Gauge Megapascals Standard

Cubic FeetStandard

Cubic MetersLeakage Rate

(bubbles per minute)StandardCubic Feet

StandardCubic Meters

Leakage Rate(bubbles per minute)

Effective Orifice Sizes0.307 Inch and Smaller

Effective Orifice SizesLarger than 0.307 Inch



Section 3 - Testing with Steam3.1 Procedure

3.1.1 Test MediumThe test medium shall be saturated steam.3.1.2 Test ConfigurationThe valve shall be vertically mounted on the steam test stand.3.1.3 Test PressureFor a valve whose set pressure is greater than 50 pounds per squareinch gauge (345 kilopascals gauge), the seat tightness shall bedetermined with the test pressure at the valve inlet held at 90percent of the set pressure. For a valve set at 50 pounds per squareinch gauge (345 kilopascals gauge) or less, the test pressure shallbe held at five pounds per square inch (34.5 kilopascals) less thanset pressure.3.1.4 Leakage TestBefore starting the seat tightness test, the set pressure shall bedemonstrated, and the set pressure shall be held for at least threeminutes. Any condensate in the body bowl shall be removed before theseat tightness test. Air (or nitrogen) may be used to dry condensate.After any condensate has been removed, the inlet pressure shall beincreased to the test pressure. Tightness shall then be checkedvisually using a black background. The valve shall then be observedfor leakage for at least one minute.

3.2 Acceptance CriteriaFor both metal and soft seated valves, there shall be no audible or visibleleakage for one minute.

Section 4 - Testing with Water4.1 Procedure

4.1.1 Test MediumThe test medium shall be water near ambient temperature.4.1.2 Test ConfigurationThe valve shall be vertically mounted on the water test stand.4.1.3 Test PressureFor a valve whose set pressure is greater than 50 pounds per squareinch gauge (345 kilopascals gauge), the seat tightness shall bedetermined with the test pressure at the valve inlet held at 90percent of the set pressure. For a valve set at 50 pounds per squareinch gauge (345 kilopascals gauge) or less, the test pressure shallbe held at 5 pounds per square inch (34.5 kilopascals) less thanthe set pressure.4.1.4 Leakage Test Before starting the seat tightness test, the set pressure shall bedemonstrated, and the outlet body bowl shall be filled with water,which shall be allowed to stabilize with no visible flow from the valveoutlet. The inlet pressure shall then be increased to the test pressure.The valve shall then be observed for one minute at the test pressure.

4.2 Acceptance CriteriaFor a metal seated valve whose inlet has a nominal pipe size of one inchor larger, the leakage rate shall not exceed 10 cubic centimeters per hourper inch of nominal inlet size. For a metal seated valve whose inlet hasa nominal pipe size of less than one inch, the leakage rate shall notexceed 10 cubic centimeters per hour. For soft seated valves, there shallbe no leakage for one minute.

Section 5 - Testing with Air - Another Method5.1 Type of Valve to be TestedValves with open bonnets - bonnets that cannot be readily sealed, asspecified in 2.2.2 - may be tested in accordance with this section insteadof Section 2.This alternative method shall not be used to test valves in which airbubbles can travel to the open bonnet through any passageway inside thevalve guide without being observed at the valve outlet.5.2 Procedure

5.2.1 Test MediumThe test medium shall be air (or nitrogen)near ambient temperature.5.2.2 Test ConfigurationThe valve shall be vertically mounted on the air test stand. Thevalve outlet shall be partially sealed with water to about inch(12.7 millimeters) above the nozzle’s seating surface.5.2.3 Test PressureFor a valve whose set pressure is greater than 50 pounds per squareinch gauge (345 kilopascals gauge), the leakage rate in bubblesper minute shall be determined with the test pressure at the valveinlet held at 90 percent of the set pressure. For a valve set at 50pounds per square inch gauge (345 kilopascals gauge) or less, thetest pressure shall be held at five pounds per square inch (34.5kilopascals) less than the set pressure.5.2.4 Leakage TestBefore starting the seat tightness test, the set pressure shall bedemonstrated, and the outlet body bowl shall be filled with waterto the level of the partial seal. The inlet pressure shall then beincreased to the test pressure and held at this pressure for oneminute before the bubble count. The valve shall then be observedfor leakage for at least one minute.Caution: When looking for leakage, the observer shall use a mirroror some other indirect means of observation so that the observer’sface is not in line with the outlet of the valve, in case the valveaccidentally pops.

5.3 Acceptance CriteriaFor a valve with a metal seat, the leakage rate in bubbles per minute shallnot exceed 50% of the appropriate value in Table 1. For a soft - seatedvalve, there shall be no leakage for one minute (zero bubbles per minute).


Technical InformationPiping Loads

Allowable Piping Loads for1900 Flanged Safety Relief Valves

1.00

Temperature (˚F)

Dera

ting

Facto

r

400 500 600 700 800 900 1000

Fig. 4 - Temperature Derating Factor

Exhaust piping loads on the valve outlet should be minimized andpreferably be a value of zero.

Since most installations will include exhaust piping, we have tabulatedallowable piping loads on our 1900 flanged safety relief valves in Table 2(page TI.11). It is the user’s responsibility to ensure that inlet piping tothe valve and the attachment to a pressure vessel can adequately supportthe load (Fv) plus other effects of pressure and temperature.

The allowable load (Fv) is the vertical force shown in Figure 3. It isassumed that (Fv ) acts through the centerline of the valve outlet andbody. The limiting value of (Fv ) is not based on the maximum allowablestresses of material in the valve body. (Fv ) is based on the structuralrigidity of the body which could cause the valve to leak if a given amountof strain is exceeded.

The allowable load (Fv) applies up to the limit of set pressure for eachvalve type.

The allowable load (Fv) is based on the valve maintaining API -527tightness, i.e., leakage point is 90% of set pressure. If the leak tightnesspressure required is higher than 90%, then allowable piping loads must bederated in accordance with the following:

Leak Tightness Pressureas a % of Set Pressure

90%91%92%93%94%95%

In addition to the above, the valve allowable load (Fv) must also bederated as a result of high temperature effects. The allowable piping loadsmust be derated in accordance with Figure 4.

The effects of required valve tightness and temperature are additive andmust be included. Example:

(1)1905K, set pressure 200 psig, 92% seat tightness, relievingtemperature 500˚F.

(2) Allowable load (Fv) = 500Derating for tightness = 500 (0.8) = 400 lb.Derating for temperature = 400 (.98) = 392 lb.

(3) That valve should not be subject to a force exceeding 392 lb. wheninstalled under the stated conditions.

Fv

CONSOLIDATED

Fig. 3 - Vertical Force Fv

.90

.80

.70

.60

.50

Derating Factor forValue Given in Table 2

1.00.90.80.70.60.5



500500600600800800

250250500500800800

150150260260330330

150150150150158158230

150150150150158158230

85858585158158230

Allowable Piping Loads for:1900 Flanged Safety Relief Valves

Allowable Piping Loads for:19000 and 820000 Threaded Safety Relief Valves

85858585158158230

5005008008001000

OrificeD

ValveType

Fv (lb)Max. Load

1905190619101912191419161918

EValveType

Fv (lb)Max. Load

1905190619101912191419161918

FValveType

Fv (lb)Max. Load

1905190619101912191419161918

GValveType

Fv (lb)Max. Load

190519061910191219141916

HValveType

Fv (lb)Max. Load

190519061910191219141916

JValveType

Fv (lb)Max. Load

190519061910191219141916

KValveType

Fv (lb)Max. Load

19051906191019121914

LValveType

Fv (lb)Max. Load

Table 2

1905190619101912191419161918

330033003300

240024002400

1200120015002000

1200120015002000

1000100012001500

1000100012001500

1000100012001500

530053005300

OrificeM

ValveType

Fv (lb)Max. Load

1905190619101912

NValveType

Fv (lb)Max. Load

1905190619101912

PValveType

Fv (lb)Max. Load

1905190619101912

QValveType

Fv (lb)Max. Load

1905190619101912

RValveType

Fv (lb)Max. Load

190519061910

TValveType

Fv (lb)Max. Load

190519061910

VValveType

Fv (lb)Max. Load

190519061910

WValveType

Fv (lb)Max. Load

1905190619101912

Valves with threaded base - to -bonnet joints should not have dischargepiping installed that would induce a torsional load when the valve relieves.All discharge piping should be parallel to the vertical axis of the valve.

The maximum allowable vetical piping loads that can be applied at theoutlet face and not adversely affect the performance of the 19000 and820000 series valves are as follows:

Valve Type

19096L, M19126L, M19110L, M19226L, M

19096H - 19110H19126H - 19226H

19357L, M19567L, M

1/2" or 3/4" 8201213/4" or 1" or 8202161" or 1-1/4" 82033321-1/2" or 2" 820857

Maximum Load (lb)

411

427427423210721072261405440782



Allowable Piping Loads for:Pilot Operated 3900 Flanged Safety Relief Valves

Exhaust piping loads on the valve outlet should be minimized, andpreferably be a value of zero. This will be the total allowed load on thesingle outlet valves and the total allowable differential load between thetwo outlets on the dual outlet valves.

Since most installations will include exhaust piping, allowable pipingloads are tabulated for the 3900 flanged safety relief valves in Table 3and Table 4. It is the user’s responsibility to ensure that inlet piping tothe valve and the attachment to a pressure vessel can adequately supportthe load Fv

The allowable load (Fv) is the vertical force at the valve outlet. It isassumed that Fv acts through the centerline of the valve outlet andbody. The limiting value of Fv is not based on the maximum allowablestresses of material in the valve body. Fv is based on the structuralrigidity of the body.

The allowable load (Fv) applies up to the limit of set pressure for eachvalve type.

39053910391239143916

150150150158158

39053910391239143916

150150150158158

39053910391239143916

150150150158158

39053910391239143916

150260260330330

39053910391239143916

150260260330330

39053910391239143916

250500500800800

39053910391239143916

250500500800800

OrificeD E F G H J K

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

39053910391239143916

50080080011001100

39053910391239143916

10001200150018001800

39053910391239143916

150150150158158

39053910391239143916

150260260330330

390539103912

120015002000

390539103912

120015002000

390539103912

240024003000

OrificeL M N P Q R T

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

Table 3 - Standard Bore Piping Loads

390539103912

500800800

390539103912

100012001500

390539103912

240024003000

390539103912

240024003000

39053910

36003600

Orifice3 x 4 4 x 6 6 x 8 x 8 8 x 10 x 10 10 x 10 x 10

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

ValveType

Fv (lb)Max. Load

Table 4 - Full Bore Piping Loads


Technical InformationTemperature Selections

Temperatures Used inSelecting Pressure Relief Valves

In all safety relief valve protected pressurized systems, the possibilityexists to have elevated temperatures present. Generally, temperatures insuch situations can be categorized as stated below:

(1) Operating TemperatureThis is the temperature normally found in the system and exists byvirtue of the processes in the system. It is normally fairly constantwhen averaged over a period of time.

(2) Relieving TemperatureThis is the temperature that exists in the system at the time thatthe pressure relief valve opens in response to a system pressureincrease. It generally results from some type of system upsetcondition. This temperature is usually higher than operatingtemperature, but may be higher or lower than design temperature.

(3) Design TemperatureThis is the specified temperature for which the structuralcomponents of the system must be designed. The value of thistemperature level is based on several factors including the length oftime at which various temperature levels are expected to occur. Itmay be higher or lower than relieving temperature.

In determining proper valve selection, temperature is one of the variablesused both for structural considerations and valve sizing. The followingguidelines are provided for use in temperature considerations anddetermining a valve selection.

(A) Capacities should be based upon the relieving temperatureand flowing pressures.

If the relieving temperature is not given, the maximum of thetemperatures given should be used.

(B) The CDTP (cold differential test pressure) should be basedupon the operating temperature.

If the operating temperature is not given, the CDTP should be basedon the lower of the temperatures given.

The nameplate should be stamped with the temperature used tocalculate the CDTP.

(C) For the selection of springs, bellows and O -Ring materials,the most critical of the operating or relieving temperature is used,except in the case of fire - sizing. If only the design temperature isgiven, it should be used.

For fire - sizing, the operating temperature is used to select thematerials for the bellows, springs and O - Rings. If the operatingtemperature is not given, the minimum of the temperatures givenshould be used.

This is the temperature which is used to select the “t” or “c”design valve.

(D) The flange rating should be based upon the designtemperature (reference ASME Section VIII, UG -20, UG -21). If thedesign temperature is not given, the most critical of thetemperatures given should be used.

When conditions are not clear about which temperatures are to be used,additional guidance should be requested.


Technical InformationFlange Finishes/Natural Frequency

Flange Finishes and Natural Frequency

Flange FinishesStandard Raised Face Flange Finish

(a) CONSOLIDATED’s standard flange face finish is 125 to 250micro inch roughness (Ra). A spiral finish having 24 to 40 groovesper inch is machined using a cutting tool with a minimum radius of.062". The resultant finish is 125 to 250 Ra with a minimum oftorn surface when compared with the visual comparison standard.(b) Acceptance of finish is based on use (visual and tactile) of theRubert 119 comparator. In accordance with ASME/ANSI B16.5,the finish of contact faces of valves will be judged by visualcomparison with Ra standards (see ANSI B46.1) and not byinstruments having stylus tracers and electronic amplification.

NOTE: Ra, AARH, AA and CLA are the same.

Nonstandard Designations(a) When a finish other than CONSOLIDATED’s standard is desired,the customer should supply the following information:

(1) Finish: serrated or smooth(2) Serrations: spiral or concentric(3) For smooth finish specify roughness, e.g., 63 Ra(4) Acceptance standard, e.g., Rubert 119 comparator

References(a) ASME/ANSI B16.5 - 1996, Pipe Flanges and Flanged Fittings(b) ASME/ANSI B16.34 - 1996, Valves - Flanged, Threaded, and

Buttwelding End(c) ASME/ANSI B46.1 - 1985, Surface Texture

Natural Frequency of Pressure Relief ValvesAll piping and mechanical systems exhibit a characteristic known as anatural frequency. This natural frequency is determined in many ways,but actually subjecting the valve to a test on a vibrating table is themost reliable.In general, valves with lower natural frequencies indicate a relativelyflexible product in its structural design. Valves which have a high naturalfrequency are indicative of valves with a stiff structural design.It is not advisable to install a valve on a system header where the valveand the piping system both have the same natural frequency. This wouldeventually lead to major vibration problems causing the valve to open ata very low set pressure and leak continuously. Usually, valve naturalfrequencies are much higher than the natural frequency of the pipingsystem on which they are installed, so problems related to naturalfrequency of the valve are not common.


Technical InformationValve Installation

GeneralValve Connections1900 flanged valves are equipped with ANSI B16.5 flanges and complywith ANSI/API STD 526. For other standards, contact CONSOLIDATED foryour needs.The facing on raised flanges is a spiral finish, 125 to 250 micro inchroughness (Ra).All flange drillings straddle the centerlines of the valve.19000 valves are supplied with threaded, socket weld or flangedconnections. 820000 valves are supplied with threaded or flangedconnections. Centerline to face dimensions are consistent with goodinstallation practices. These flanges also comply with B16.5

Handling and StorageThe internal parts of safety relief valves are precision machined and fittedtogether to maintain perfect alignment. Rough handling may damage theseats or cause misalignment sufficient to incur leakage or erraticoperation. Safety relief valves should be handled carefully. Safety reliefvalves are shipped with a protective covering over the inlet and the outletto prevent damage to the flanged surfaces and to prevent entry of foreignmaterial into the valve. If the valves are to be stored before installation,the protective covering should be left intact until installation.Furthermore, clean, dry covered storage is recommended. If this is notpractical, valves should at least be protected with a suitable covering toprevent entry of foreign material.

Inlet PipingThe safety relief valve should be installed in a vertical upright position.The inlet piping to the valve should be short and direct from the vessel orequipment being protected. The connection to the vessel should beprovided with a radius to permit smooth flow to the valve. Sharp cornersshould be avoided. Should this not be practical, then the inlet should bewedged out at least one additional pipe diameter.In any event, the pressure drop from the vessel to the valve should notexceed 3% when the valve is flowing full capacity. In no event should theinlet piping be smaller in diameter than the inlet connection of the valve.

Outlet PipingAlignment of the internal parts of a safety relief valve is important toensure proper operation. Although the valve body will withstand aconsiderable mechanical load, unsupported discharge piping should notinvolve loads any higher than that stated in the Piping Loads section ofthis catalog. They should also avoid loads consisting of more than acompanion flange, long radius elbow and a short vertical pipe. Careshould be taken to ensure thermal expansion of piping and support doesnot produce strains in a valve. Spring supports are recommended wherethis may be the case. The discharge piping should be designed to allowfor vessel expansion as well as expansion of the discharge pipe itself.This is particularly important on long discharge lines.Consideration should be given to discharge pipe movement resulting fromwind loads. A continual oscillation of the discharge piping introducesstress distortion in the valve body. The resultant movement of theinternal parts may cause leakage.Where possible, drains should be piped away to prevent the collection ofwater or corrosive liquid in the valve body. Attention should be given tothe support of the drainage piping.When two or more valves are piped to discharge into a common header,the built - up back pressure resulting from the opening of one (or more)valve(s) may cause a superimposed back pressure in the remainingvalves connected to the header. This back pressure will increase the setpressure of the remaining valves by the amount of the back pressure,unless the bonnet is vented. Under these conditions, use of bellowsvalves is recommended. Bellows valves may also permit use of a smallersize manifold.It is recommended that the smaller orifice valve be set at the lower setpressure and that it be installed upstream of other valves.

Valve Installation


Technical InformationAPI RP 520, Part II

Support to resist weightand reaction forces

Support to resist weight and reaction forces

Long - radius elbow

Body drain

Vessel

Vessel

Pressure relief valve Purge or vent valve maybe required at stop valve

or in spool piece

See note

Pressure drop notmore than 3% of

set pressure

Pressure dropnot more than 3%

of set pressure

Optional low -point drain

Nominal pipediameter no less than

valve inlet size

Weather cap(may be required)

If pressure relief valve isconnected to a closed system,care should be taken to keeppiping strains away from thevalve under all conditions of

process operation.

NOTE: The stop valve must have a full port area greater than or equal to the inletsize of the pressure relief valve. The stop valve should be used only aspermitted by the applicable codes.

Pressure relief valve

Fig.5 - Typical Pressure Relief Valve Without a Stop Valve Fig. 6 - Typical Pressure Relief Valve With a Stop Valve

API Recommended Practice for the Design and Installation of

Pressure Relieving Systems in Refineries(Excerpts from API RP 520 Part II)

1. General

1.1 ScopeThis recommended practice is intended to cover methods ofinstallation for pressure relieving devices. Pressure relief valves orrupture disks may be used independently or in combination witheach other to provide the required protection against excessiveoverpressure. As used in this recommended practice, the termpressure relief valve includes safety relief valves used incompressible fluid service and relief valves used in liquid service.This recommended practice covers gas, vapor, and liquid service;it does not cover special applications that require unusualinstallation considerations.

2. Inlet Piping

2.1 General RequirementsFor general requirements of inlet piping, see Fig. 5 and Fig. 6.

2.1.1 Flow and Stress ConsiderationsThe valve inlet piping should be designed to provide for propervalve performance. This requires design consideration of the

flow induced pressure drop in the inlet piping. Excessivepressure losses in the piping system between the protectedvessel and the pressure relief valve will adversely affect thevalve performance. In addition, the effect of stresses derivedfrom both valve operation and externally applied loads mustbe considered. For more complete piping design guidelines,see ASME B31.1 or B31.3.2.1.2 Vibration ConsiderationsVibrations in inlet piping systems may cause leakage in theseats of pressure relief valves or fatigue failure of the piping;under certain conditions, both results may occur.Most vibrations that occur in inlet piping systems are randomand complex. These vibrations may cause the seat on thevalve disk to slide back and forth across the seat on the valvenozzle, resulting in damage to the seating surfaces; they maycause actual separation of the seating surfaces; or they maycause premature fatigue failure of certain valve parts.Regardless of the amplitude, high - frequency vibrations aremore detrimental to the tightness of the pressure relief valvethan are low - frequency movements. This effect can beminimized by providing greater pressure differentials betweenthe operating pressure and the set pressure, particularly underhigh - frequency conditions.

2.2 Pressure Drop Limitations and Piping ConfigurationsFor pressure drop limitations and piping configurations, seeFigures 5 - 8.




Fig. 7 - Typical Pressure Relief Valve Mounted on a Process Line Fig. 8 - Typical Pressure Relief Valve Mounted on a Long Inlet Pipe

Discharge Piping

Inlet piping sizedso that pressuredrop from vesselto pressure reliefvalve inlet flangedoes not exceed3% of valve set

pressure

Vessel

See 2.2.2 forpressure - loss limitation

Pressure relief valveVessel

2.2.1 Pressure Loss at the Valve InletExcessive pressure loss due to friction at the inlet of a pressurerelief valve will cause rapid opening and closing of the valve,or chattering. Chattering may result in lowered capacity anddamage to the seating surfaces. Pressure loss is caused byfriction within, or entering into, the inlet piping of the pressurerelief valve.2.2.2 Size and Length of Inlet PipingThe inlet piping between the protected equipment and theinlet flange of the pressure relief valve should be designed sothat the total pressure loss does not exceed 3% of the setpressure of the valve. The pressure loss should be calculatedusing the maximum rated capacity of the pressure reliefvalve. Pressure losses can be reduced materially by roundingthe entrance to the inlet piping or by using larger inlet piping.The nominal size of the inlet piping must be the same as orlarger than the nominal size of the valve inlet flange.When a rupture disk device is used in combination with apressure relief valve, the pressure drop calculation mustinclude the additional pressure drop developed by the disk.Pilot operated valves can tolerate higher inlet pipe pressure losseswhen the pilot senses the system’s pressure at a point that is notaffected by the inlet pipe pressure drop (see Figure 9). Thereduced capacity of the main valve, caused by the increasedpressure drop, should not be reduced below the capacityrequired to protect the equipment or system.

2.2.3 Configuration of Inlet PipingThe installation of a pressure relief valve at the end of a longhorizontal inlet pipe through which there is normally no flow

should be avoided. Foreign matter may accumulate, or liquidmay be trapped, creating interference with the valve’soperation or requiring more frequent valve maintenance.

2.3 Inlet Stresses that Originate from Discharge PipingImproper design or construction of the discharge piping from apressure relief valve can set up stresses that will be transferred tothe valve and its inlet piping. These stresses may cause the valveto leak or malfunction. The valve Manufacturer should beconsulted about permissible loads and moments.

2.3.1 Thermal StressesFluid flowing from the discharge of a pressure relieving devicemay cause a change in the temperature of the dischargepiping. A change in temperature may also be caused byprolonged exposure to the sun or to heat radiated fromnearby equipment. Any change in the temperature of thedischarge piping will cause a change in the length of thepiping and may cause stresses that will be transmitted to thepressure relieving device and its inlet piping. The pressurerelieving device should be isolated from piping stressesthrough proper support, anchoring, or flexibility of thedischarge piping. Fixed supports should not be used becausethey may cause stresses in the pressure relief valve as a resultof thermal changes.2.3.2 Mechanical StressesDischarge piping should be independently supported andcarefully aligned. Discharge piping that is supported by onlythe pressure relief valve will induce stresses in the pressurerelief valve and the inlet piping. Forced alignment of thedischarge piping will also induce such stresses.



Excess flow valve(optional)

Pressure gauge

Fig.9 - Typical Pilot Operated Pressure Relief Valve Installation Fig. 10 - Typical Rupture Disk Assembly Installed inCombination with a Pressure Relief Valve

Pilot valve

Integral pressurepickup

Optional remote pressure pick-up

Main valve

Bleed valve (may be car-sealed open)

Vessel

2.6 Rupture DisksA rupture disk device may be used as the sole pressure relievingdevice, or it may be installed between the pressure relief valveand the vessel or on the outlet side of the valve. For ASME Codeapplications, the capacity of a pressure relief valve used incombination with a rupture disk mounted as shown in Figure 10must be derated by 20% unless that particular combination has acapacity factor derived from testing and certified by ASME.

When a rupture disk device is used downstream from the valve orbetween the pressure relief valve and the protected vessel, a pressuregauge, try cock, free vent, or suitable telltale indicator should be providedto permit detection of disk rupture or leakage. Unless this requirementis complied with, the user is cautioned that any pressure buildup betweenthe rupture disk and the pressure relief valve will increase the openingpressure of the device (see Figure 10).Only rupture disks that have a non-fragmenting design may be usedbeneath a pressure relief valve.When reverse buckling disks are used in liquid service, someManufacturers recommend a vapor space that is required to provide thedynamic energy necessary to ensure complete rupture and full opening ofthe disk.

2.7 Process LateralsProcess laterals should generally not be connected to the inletpiping of pressure relief valves. Exceptions should be analyzedcarefully to ensure that the allowable pressure drop at the inlet of thepressure relief valve is not exceeded under simultaneous conditionsof rated flow through the pressure relief valve and maximumpossible flow through the process lateral (see Figure 11).2.8 Pressure Relief Valve InletsInlets of pressure relief valves should not be located whereexcessive turbulence is present (see Figure 12). The branch

entrance where the lateral outlet nozzle joins the main run shouldhave a well rounded, smooth corner that minimizes turbulenceand resistance to flow.

3. Discharge Piping

3.1 General RequirementsThe discharge piping installation must provide for proper valveperformance and adequate drainage, with consideration given tothe effect of back pressure on the particular design of the valve.Consideration should be given to the type of discharge systemused, the design of the pressure relief valve, and the set pressurerelationship of the valves in the system.Auto-refrigeration during discharge can severely cool the outlet ofthe valve and the discharge piping. Materials must be selected toavoid sensitivity to brittle fracture.3.2 Safe Disposal of Relieving FluidsFor a comprehensive source of information about the safedisposal of various relieving fluids, see API RP 521.3.3 Back Pressure Limitations and Sizing of PipeWhen discharging piping is designed, the combined effect ofsuperimposed and built - up back pressure on the operatingcharacteristics of the valves should be considered. Thedischarge piping system should be designed so that the amountof back pressure does not exceed the value established by thepressure relief valve that has the lowest back pressurelimitation in the system.



Fig. 11 - Recommended Typical Installation to Avoid ProcessLaterals Connected to Pressure Relief Valve Inlet Piping

Fig. 12 - Typical Installation Avoiding ExcessiveTurbulence at Pressure Relief Valve Inlet

BranchConnection

Not less than 10 pipe diametersfrom any device that causes turbulence

Inlet Pipe

Run Pipe

Inlet Flanges

Process laterals generallyshould not be connected topressure relief valve inlet

piping - consult text


Vessel

In every case, the nominal discharge pipe should be as large asor larger than the nominal size of the pressure relief valve outletflange; in the case of long discharge piping, the pipe size mustsometimes be much larger.Sizing of discharge piping for vapor or gas service is covered inAPI RP 521.3.4 Stresses that Originate from Discharge PipingThe effects of stresses that originate from discharge piping arediscussed in 2.3.1 and 2.3.2.

4. Bonnet or Pilot Vent Piping

4.1 Conventional ValvesFollowing are two types of conventional valves:

a) Closed Bonnet. The normal closed bonnet valve requiresno special precautions except that it should be properlychosen for the particular conditions of installation.b) Vented Bonnet. The location of the valve and the designof the discharge piping system are the main considerations inventing the valve bonnets into the atmosphere.

Considerations must be given to the qualities of the fluids that aredischarged to the atmosphere through the bonnet vents, sincesome fluids may have hazardous properties.4.2 Balanced Bellows ValvesThe bonnets of bellows seal valves should always be vented toensure proper functioning of the valve and to provide a telltale inthe event of a bellows failure. The vent must be designed toavoid plugging caused by ice, insects, or other obstructions.When the fluid is flammable, toxic, or corrosive, the bonnet ventshould be piped to a safe location.

4.3 Balanced Piston ValvesThe bonnets of balanced piston seal valves should always bevented because of the flow past the piston. Under conditions ofnormally low back pressure, the flow is small and may possiblybe safely discharged to the atmosphere; however, when the valveis operating, the flow will increase as a result of the higher bodypressure. This factor must be considered in the design of thebonnet venting.4.4 Pilot Operated ValvesThe pilot is normally vented to the atmosphere under operatingconditions, since the discharge during operation is slight. Whenvent discharge to the atmosphere is not permissible, the pilotshould be vented through a supplementary piping system to asafe location. When vent piping is designed, precautions shouldbe taken to avoid the possibility of back pressure on the pilotunless the pilot is of the balanced design.

6. Valve Location and Position

6.1 Inspection and MaintenanceFor optimum performance, pressure relief valves must be servicedand maintained regularly. Details for the care and servicing ofspecific valves are provided in the Manufacturer’s maintenancebulletins and in Chapter XVI of the API Guide for Inspection ofRefinery Equipment.Pressure relief valves should be located for easy access andremoval so that servicing can be properly handled. Sufficientworking space should be provided around the valve.



6.2 Proximity to Pressure SourceThe Pressure relieving device should normally be placed close tothe protected equipment so that the valve will be “fed” properlyunder flowing conditions. For example, where protection of apressure vessel is involved, mounting the pressure relievingdevice directly on a nozzle on top of the vessel is stronglyrecommended; however, on installations that have pressurefluctuations at the pressure source (as with valves on thecompressor discharge) that peak close to the set pressure of thevalve, the pressure relief valve should be located farther from thesource and in a more stable pressure region.6.3 Proximity to Other Valve EquipmentThe valves should be mounted downstream from any of thedevices in 6.3.1 through 6.3.3 at a distance sufficient to avoidturbulence (see Figure 12).

6.3.1 Reducing StationsPressure relief valves are often used to protect pipingdownstream from pressure reducing valves, where turbulenceusually occurs. Other valves and appurtenances in the systemmay also be effective in disturbing the flow. This conditioncannot be evaluated readily, but turbulence at valve inletstends to generate instability.6.3.2 Orifice Plate and Flow NozzleProximity to orifice plates and flow nozzles may causeadverse operation of the pressure relief valves.6.3.3 Other Valves and FittingThe use of other fittings, such as elbows, may create turbulentareas that could result in adverse performance of pressurerelief valves.

6.4 Mounting PositionPressure relief valves should be mounted in a vertical uprightposition. Installing a pressure relief valve in other than a verticalupright position will adversely affect its operation. The valveManufacturer should be consulted about any other mountingposition, since mounting a pressure relief valve in other positionsmay cause a shift in the set pressure and a reduction in thedegree of seat tightness.6.5 Test or Lifting LeversTest or lifting levers should be provided on pressure relief valves asrequired by the applicable code. Where simple levers are provided,they should hang down, and the lifting fork must not contact thelifting nuts on the valve spindle (see Figure 13, Panel A). Uploadscaused by the lifting mechanism bearing on the spindle will causethe valve to open below the set pressure.

7. Bolting and Gasketing

7.1 Care in InstallationBefore a pressure relief valve is installed, the flanges on thevalve and the mounting nozzle should be thoroughly cleaned toremove any foreign material that may cause leakage. Wherevalves are too heavy for ready lifting by hand, the use of properhandling devices will avoid damage to the flange gasket facing.Ring joint and tongue and groove facing should be handled withextreme care so that the mating sections are not damaged.7.2 Proper Gasketing and Bolting for Service RequirementsThe gasket used must be dimensionally correct for the specificflange, and must fully clear the valve’s inlet and outlet openings.Gaskets, flange facings, and bolting should meet the servicerequirements for the pressure and temperature involved. Thisinformation can be obtained by referring to other nationalstandards and to Manufacturers’ technical catalogs.When a rupture disk device is installed in the pressure relievingsystem, the flange gasket material and bolting loads may becritical. The disk Manufacturer’s instructions should be followedfor proper performance.

8. Multiple Pressure Relief Valveswith Staggered Settings

8.1 Advantages of Multiple ValvesIn many instances, valves are sized to handle the total quantityof fluid that results from a maximum emergency condition;however, during mild system upsets, only a fraction of thatamount is discharged through the valve. If the fluid volumeunder the valve is insufficient to sustain the flow, the valveoperation will be cyclic and will result in poor performance. Thevalve’s ability to reseat tightly may be affected. This type ofservice condition can exist in a pressure reducing station wherethe requirement for a pressure relief valve is based on the wideopen failure of a reducing valve, but under conditions of lesserflow, the pressure relief valve works only at partial capacity.When capacity variations of the foregoing types are frequentlyencountered in normal operation, the use of multiple smallerpressure relief devices with staggered settings is recommended.With this arrangement, the pressure relief valve with the lowestsetting will be capable of handling minor upsets, and additionalvalves will be put in operation as the capacity requirement increases.



Panel B: Counterbalanced for remote operation

Fig. 13 - Typical Positions for Pressure Relief Valve Lifting Lever

Panel A: Remote operation not required

8.2 Code Requirements for Staggered SettingsFor ASME Code applications, one pressure relief device must beset at or below the maximum allowable working pressure of theprotected vessel. Additional devices may be set to open athigher pressures, but in no case except under fire conditionsshould the setting be more than 105% of the maximumallowable working pressure.When a pressure vessel is exposed to fire or another unexpectedsource of external heat, any supplemental pressure relievingdevices may be set to open at a pressure not more than 110% ofthe maximum allowable working pressure of that vessel.

9. Preinstallation, Handling, and Inspection

9.1 Storage and Handling of Pressure Relief ValvesBecause cleanliness is essential to the satisfactory operation andtightness of a pressure relief valve, precautions should be taken tokeep out all foreign materials. Valves should be closed off properlyat both inlet and outlet flanges. Particular care should be taken tokeep the valve inlet absolutely clean. Valves should preferably bestored indoors or in a location where dirt and other forms ofcontamination are at a minimum. Valves should not be thrown ona pile or placed on the bare ground while they await installation.Valves should be handled carefully and should not be subjected toshocks. If attention is not paid to this point, considerable internaldamage or misalignment can result, and seat tightness may beadversely affected.9.2 Inspection and Testing of Pressure Relief ValvesThe conditions of all pressure relief valves should be visuallyinspected before installation. The Manufacturer’s instructionmanuals should be consulted for details relating to the specificvalve. Caution should be taken to ensure that all protectivematerial on the valve flanges and any extraneous materials insidethe valve body and nozzle are completely removed. Bonnetshipping plugs must be removed from balanced pressure reliefvalves. The inlet surface must be cleaned, since foreign materialsclinging to the inside of the nozzle will be blown across the seatswhen the valve is operated. Some of these materials may damagethe seats or get trapped between the seats in such a way that theycause leakage. Valves should be tested before installation toconfirm their opening pressure setting.

9.3 Inspection of Rupture Disk DevicesAll rupture disk devices should be thoroughly inspected beforeinstallation. The Manufacturer’s instruction manuals should befollowed with respect to the specific disk. The seating surfaces ofthe rupture disk holder must be clean, smooth, and undamaged.Rupture disks should be checked for physical damage to theseating surfaces or the prebulged disk area. Damaged ordented disks should not be used. The safety heads of boltedconstruction should be checked for proper torque asrecommended by the Manufacturer.On reverse buckling disks that have knife blade assemblies, theknife blades should be checked for physical damage and sharpness.Nicked or dull blades must not be refurbished or replaced.9.4 Inspection and Cleaning of Systems Before InstallationBecause foreign materials that pass into and through pressurerelief valves are damaging, the systems on which the valves aretested and finally installed must also be inspected and cleaned.New systems in particular are prone to contain welding beads,pipe scale, and other foreign objects that inadvertently gettrapped during construction and will destroy the seating surfacewhen the valve opens. Wherever possible, the system should bethoroughly purged before the valve is installed.The valve should be isolated during pressure testing of thesystem, either by blanking or closing a stop valve.


Technical InformationO-Ring Selection

O-Ring Selection Tables - Media

Acetaldehyde X X XAcetamide X X X X X XAcetic acid X XAcetic anhydride X X X XAcetone X XAcetophenone X XAcetyl acetone X XAcetyl chloride X XAcetylene X X X X X XAcetylene tetrabromide X X X XAir X X X X X XAlkazene X XAmines-mixed X X XAmmonia, gas X X X X XAmmonia, liquid (anhydrous) X X X X XAmmonium hydroxide X X X X XAmyl alcohol X X X X XAmyl borate X X X XAmyl chloride X XAmyl chloronaphthalene X XAmyl naphthalene X XAnhydrous ammonia X X X X XAnhydrous hydrazine X X XAnilene X XArgon X X X X X XAsphalt X X X XASTM oil X X XAutomatic transmission fluid X X X X

Beer X X X X X XBeet sugar liquors X X X X X XBenzaldehyde X X XBenzene X XBenzochloride X X XBenzoic acid X X XBenzophenone X X XBenzyl alcohol X X X X XBenzyl benzoate X XBenzyl chloride X XBleach liquor X X X X XBoric acid X X X X X XBrake fluid (non-petroleum) X X XBromine X XBromobenzene X XBromochloro trifluoroethane X X XBunker oil X X X XButadiene (monomer) X XButane X X X XButane, 2, 2-dimethyl X X X XButane, 2, 3-dimethyl X X X XButanol (butyl alcohol) X X X X X X1-Butene, 2-ethyl X X XN-butyl acetate X XButyl alcohol X X X X X X

Nitrile Ethylene

Propylene Fluorocarbon Neoprene Silicone TeflonFluid

O-Ring Selection




Butyl amine or N-butyl amine X X

N-butyl benzoate X X X

N-butyl butyrate X X X

Butylene X X X

Butyraldehyde X X

Butyric acid X X X

Calcium acetate X X X X

Calcium bisulfite X X X X X

Calcium carbonate X X X X X X

Calcium chloride X X X X X X

Calcium cyanide X X X X X

Calcium hydroxide X X X X X X

Calcium hypochlorite X X X X X X

Calcium nitrate X X X X X X

Calcium phosphate X X X X X X

Cane sugar liquors X X X X X X

Carbolic acid phenol X X X

Carbon bisulfide X X X

Carbon dioxide X X X X X X

Carbon disulfide X X

Carbon monoxide X X X X X X

Carbon tetrachloride X X X

Carbonic acid X X X X X X

Castor oil X X X X X X

Cetane (hexadecane) X X X X

Chloracetic acid X X

Chlorinated salt brine X X

Chlorine, dry X X X

Chlorine dioxide X X

Chloroacetone X X

Chlorobenzene X X

Chlorobromo methane X X X

Chlorobutadiene X X

Chlorododecane X X

Chloroform X X

O-chloronaphthalene X X

Chlorotoluene X X

Chlorox™ X X X X X

O-chlorphenol X X

Chrome plating solutions X X X X

Citric acid X X X X X X

Corn oil X X X X

Cottonseed oil X X X X X X

Crude oil X X X

Cyclohexane X X X

Cyclohexanol X X X X

Cyclohexanone X X

Decalin X X

Decane X X X X

Denatured alcohol X X X X X X

Detergent, water solution X X X X X X

Dexron™ X X X X

Nitrile Ethylene


O-Ring Selection




Diacetone X X X

Diacetone alcohol X X X

Dibenzyl ether X X

Dibenzyl sebacate X X X

Dibromoethyl benzene X X

Dibutyl phthalate X X X

Dibutyl sebacate X X X X

O-dichlorobenzene X X

P-dichlorobenzene X X

Dichloro-butane X X X

Diesel oil X X X

Di-ester synthetic lubricants X X X

Diethylamine X X X X

Diethyl sebacate X X X X X

Diethylene glycol X X X X X X

Diisobutylene X X X

Diisopropyl ketone X X X X

Dimethyl formamide (DMF) X X X

Dimethyl phthalate X X X

Dioctyl phthalate X X X

Dioctyl sebacate X X X

Dioxane X X

Dioxolane X X

Dipentene X X X

Diphenyl X X X X X X

Diphenyl oxides X X X X X X

Dowtherm, A X X

Dowtherm, E X X

Epichlorohydrin X X

Ethane X X X X

Ethanol X X X X

Ethanol amine X X X X X

Ethyl acetate-organic ester X X X

Ethyl acetoacetate X X X

Ethyl acrylate X X X

Ethyl alcohol X X X X X

Ethyl benzene X X

Ethyl benzoate X X

Ethyl bromide X X X

Ethyl cellosolve X X

Ethyl cellulose X X X X X

Ethyl chloride X X X

Ethyl chlorocarbonate X X X

Ethyl chloroform, ATE X X

Ethycyclopentane X X X

Ethylene chloride X X

Ethylene chlorohydrin X X X X

Ethylene diamine X X X X X

Ethylene dibromide X X

Ethylene dichloride X X

Ethyl formate X X X X

Ethylene glycol X X X X X X

Nitrile Ethylene


O-Ring Selection




Ethylene trichloride X X

Ethyl hexanol X X X X X X

Ethyl mercaptan X X

Ethyl oxalate X X X

Ethyl pentachlorobenzene X X

Ethyl silicate X X X X X

Fatty acids X X X X

Ferric chloride X X X X X X

Ferric nitrate X X X X X X

Formaldehyde X X X

Freon, 11™ X X X

Freon, 12™ X X X X

Freon, 13™ X X X X X

Freon, 13B1™ X X X X X



Freon, 31™ X X

Freon, 32™ X X




Fuel oil X X X X

Fuel oil, acidic X X X X X

Fuel oil, #6 X X X X

Fumaric acid X X X X X X

Furfural X X

Furfuraldehyde X X

Furfurl alcohol X X

Furyl carbinol X X

Gallic acid X X X X X

Gasoline X X X X

Gelatin X X X X X X

Glucose X X X X X X

Glycerine-glycerol X X X X X X

Glycols X X X X X

Halothane X X

Halowax oil X X

Helium X X X X X X

N-Heptane X X X X

N-Hexaldehyde X X X X

N-Hexane X X X X

N-Hexane-1 X X X X

Hexyl alcohol X X X X

Hydraulic oil, petroleum base X X X X X

Hydrazine X X X X X

Hydrobromic acid X X X

Hydrocarbons X X X X

Hydrochloric acid to 158˚F X X X X X

Hydrocyanic acid X X X X X

Hydrofluosilicic acid X X X X X

Hydrogen gas X X X X X

Nitrile Ethylene


O-Ring Selection




Hydrogen peroxide (1) X X

Hydrogen sulfide X X X

Hydyne X X X X

Hypochlorous acid X X X X

Iodine X X X X X

Isobutyl alcohol X X X X X X

Iso-butyl N-butyrate X X X

Isododecane X X X X

Isooctane X X X X

Isophorone (ketone) X X

Isopropanol X X X X X X

Isopropyl acetate X X

Isopropyl alcohol X X X X X X

Isopropyl chloride X X

Isopropyl ether X X

JP-3 to JP-10 X X

Kerosene X X X X

Lactic acid X X

Lactones X X

Linoleic acid X X X X X

Linseed oil X X X X

Liquid petroleum gas (LPG) X X X X

Lubricating oils X X X

Lye solutions X X X X X X

Magnesium hydroxide X X X X X

Malathion™ X X X

Maleic acid X X

Maleic anhydride X X

Malic acid X X X X X X

Mesityl oxide (ketone) X X

Methane X X X X

Methanol X X X X

Methyl acetate X X X

Methyl acetoacetate X X X

Methyl acrylate X X X

Methylacrylic acid X X X

Methyl alcohol X X X X X

Methyl benzoate X X

Methyl bromide X X X

Methyl butyl ketone X X

Methyl carbonate X X

Methyl chloride X X

Methyl chloroformate X X

Methylcyclopentane X X

Methylene chloride X X

Methyl ether X X X X

Methyl ethyl ketone (MEK) X X

Methyl formate X X X

Methyl isopropyl ketone X X

Nitrile Ethylene


O-Ring Selection




Methyl mercaptan X X

N-methyl-2-pyrrolidone X X

Methyl oleate X X

Methyl salicylate X X

Milk X X X X X X

Mineral oils X X X X X

Mono bromobenzene X X X

Monochlorobenzene X X

Mono ethanolamine X X X

Monomethylaniline X X X X

Monomethyl hydrazine X X X X

Monovinyl acetylene X X X X X X

Naptha X X X

Napthalene X X

Napthenic acid X X X

Natural gas X X X X

Neon X X X X X X

Nickel acetate X X X X

Nickel chloride X X X X X X

Nickel salts X X X X X X

Nickel sulfate X X X X X X

Nitrobenzene X X X

Nitroethane X X X

Nitrogen X X X X X X

Nitromethane X X

Nitropropane X X

Nitrous oxide X X

Octadecane X X X X

N-octane X X X

Octyl alcohol X X X X X

Oleic acid X X

Olive oil X X X X X

Orthochloro ethylbenzene X X

Ortho-dichlorobenzene X X

Oxalic acid X X X X X X

Oxygen X X X X X X

Palmitic acid X X X X X

Para-dichlorobenzene X X

Peanut oil X X X X X X

Pentane X X X X

N-pentane X X X X

Perchloroethylene X X X

Petrolatum X X X X

Petroleum oil X X X

Phenol X X

Phenylbenzene X X

Phenylhydrazine X X X

Phosphoric acid to 158˚F X X X

Phosphorous trichloride X X X

Pinene X X X

Pine oil X X X

Nitrile Ethylene


O-Ring Selection




Plating solutions X X X

Potassium acetate X X X X

Potassuim chloride X X X X X X

Potassium cupro cyanide X X X X X X

Potassium cyanide X X X X X X

Potassium dichromate X X X X X X

Potassium nitrate X X X X X X

Potassium salts X X X X X X

Potassium sulphate X X X X X X

Potassium sulphite X X X X X X

Propane X X X X

Propane propionitrile X X X X

Propyl acetate X X X

N-propyl acetone X X

Propyl alcohol X X X X X X

Propylene X X

Propylene oxide X X

Propyl nitrate X X X

Rapeseed oil X X X X X

Salicylic acid X X X X X X

Sea (salt) water X X X X X X

Silicone oils X X X X X

Silver nitrate X X X X X X

Soap solutions X X X X X X

Sodium acetate X X X X

Sodium bicarbonate X X X X X X

Sodium borate X X X X X X

Sodium carbonate X X X X X X

Sodium bisulfate or bisulfite X X X X X X

Sodium chloride X X X X X X

Sodium cyanide X X X X X

Sodium hydroxide, 3 molar X X X X X X

Sodium hypochlorite X X X X X X

Sodium metaphosphate X X X X X

Sodium nitrate X X X X

Sodium perborate X X X X X X

Sodium peroxide X X X X X

Sodium phosphate X X X X X

Sodium silicate X X X X X

Sodium sulphate X X X X X X

Sodium sulphide and sulfite X X X X X X

Sodium thiosulfate X X X X X X

Soybean oil X X X X X X

Stannic chloride X X X X X

Steam X X

Stearic acid X X X X X

Stoddard solvent X X X X

Styrene X X

Sucrose solutions X X X X X X

Nitrile Ethylene


O-Ring Selection




Sulfur X X X

Sulfur chloride X X

Sulfur dioxide X X X

Sulfuric acid to 158˚F X X X X X X

Sulfurous acid X X X X X

Sulfur trioxide, dry X X X X X

Tar, bituminous X X X X X X

Tartaric acid X X X X X X

Terpineol X X X

Tertiary butyl alcohol X X X X X X

P-tertiary butyl catechol X X X X

Tertiary butyl mercaptan X X

Tetrabromoethane X X

Tetrabutyl titaniate X X X X X

Tetrachoroethane X X

Tetrachloroethylene X X

Tetrahydrofuran X X

Tetralin X X

Therminol VP-1, 44, 55, 60, 66 X X

Toluene X X

Toluene diisocyanate X X

Triacetin X X X X

Triaryl phosphate X X X

Tributoxyethyl phosphate X X X

Tributyl mercaptan X X

Tributyl phosphate X X

Trichloroacetic acid X X X

Trichloroethane X X

Trichloroethylene X X

Tricresyl phosphate X X X

Triethanol amine X X X

Trifluoroethane X X

Trioctyl phosphate X X X

Tripoly phosphate X X X

Tung oil, china wood oil X X X X

Turpentine X X X

Varnish X X X

Vegetable oil X X X

Vinegar X X X X

Water X X X X X X

Whiskey and wines X X X X X X

Xylene X X

Xylol X X

Xenon X X X X X X

Zinc acetate X X X X

Zinc chloride X X X X X

Zinc salts X X X X X X

Zinc sulfate X X X X X X

Nitrile Ethylene


O-Ring Selection

In-house Review

VI.1VS.1Valve Sizing (SRV-1/Q2.02)

Valve Sizing

IntroductionAPI SizingAPI establishes rules for sizing of pressure relief devices in the standardAPI RP 520. This recommended practice addresses only flanged springloaded and pilot operated safety relief valves with a D - T orifice. Valvessmaller or larger than those with a D - T orifice are not addressed by APIRP 520. The API rules are generic for pressure relief devices, and API recognizesthat Manufacturers of pressure relief devices may have criteria such asdischarge coefficients and correction factors that differ from those listedin API RP 520. The API RP 520 equations and rules are intended for theestimation of pressure relief device requirements only. Final selection ofthe pressure relief device is accomplished by using the Manufacturer'sspecific parameters, which are based on actual testing. The data given inthis catalog is specific for Consolidated valves.It is traditional to size and select pressure relief valves specified per APIRP 526 for gas, vapor and steam applications using the API RP 520 Kdvalue of 0.975 and the effective areas of API RP 526. Although the APIKd values exceed the ASME certified K values, the ASME certified areasexceed the effective areas of API RP 526 with the product of the ASMEcertified K and area exceeding the product of the API RP 520 Kd and APIRP 526 effective areas. This allows selection of a Consolidated valveseries using the API Kd and area while still maintaining compliance withASME flow certification.The Consolidated 2900 series is a hybrid of the 1900 and 3900 series.The 2900 series meets the dimension requirements for spring loadedvalves and the effective areas for both spring loaded and pilot actuatedvalves per API RP 526. Although the 2900 is not a true API RP 526pressure relief valve, it may be used as a replacement for API RP 526spring loaded pressure relief valves.

Flow Coefficient K (Coefficient of Discharge)The K value has been established at the time valves are certified by ASMEand are published for all ASME certified valves in “Pressure Relief DeviceCertifications” by the National Board of Boiler and Pressure VesselInspectors, 1055 Crupper Ave., Columbus, Ohio 43229.Relating to sizing, API RP 526 details an effective discharge area. Thesizing formulas listed on page VS.5 are in agreement with thosepublished in API RP 520 for determining the required Consolidated valveseries. On page VS.7, the equations of page VS.6 are modified to metricunits with a units conversion factor Ku. The information listed in Tables 6-8 describing “API Standard Orifice Area” is in accordance with those listedin API RP 526.Consolidated has elected to use its actual bellows back pressurecorrection factor for sizing and selection of the appropriate Consolidatedvalve series per API recommendations for using the Manufacturer’s actualparameters. Consolidated has elected to use the ASME certified liquid Kdof 0.744 for types 1900 and 2900; and 0.825 is used for type 3900instead of the API recommended Kd of 0.65, as the ASME certifiedcoefficient pre-dates the API recommended value.ASME Capacity CalculationASME codes establish the certified relieving capacities and correspondingmedia, which must be stamped on the valve name plates.

Computer Sizing Program InformationDresser Measurement has a computer sizing program which performssizing and selection functions. Additionally, it will select materials,configure the complete value and provide a data sheet with a certifieddrawing including dimensions, weights, and materials.

NOTE: “USCS” indicates the U.S. Customary System Designation, which is similar toEnglish Units.

Table of ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.1Formula Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.2Set Pressure and Overpressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.3API Sizing Formulas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.5Correction Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.8Fluid Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.11API Standard Orifice Areas

1900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.132900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.143900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.1519000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.161982, 820000, and 13900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.17

Superheat Correction Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.18ASME Saturated Water Valve Sizing / Rupture Disk Combination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.20Thermal Expansion / API Fire Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.21Sizing for Multiple Fluids Per API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.26Organic Fluid Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VS.27

VS.2Consolidated Safety Relief Valves Valve Sizing (SRV-1/Q2.02)

Valve Sizing

The safety relief valve area required to prevent the vessel or systempressure from exceeding prescribed limits above the vessel orsystem MAWP. The units used are USCS (in2) and metric (mm2).

Dimensionless, whole number value determined from anexpression of the ratio of specific heats of the gas or vapor (seeTables 4 and 5).

Flow Coefficient (Kd x 0.9). Dimensionless ratio of the constantpressure specific heat Cp to the constant volume specific heat Cv.Select the value based on valve type and type of media (refer tosizing formulas for proper values.

Dimensionless value used to correct for the reduction in the safetyrelief valve capacity due to the effects of back pressure onconventional and balanced bellows valves. See Figure 3 forbalanced bellows valve corrections and Figure 2 for non-bellowsvalves. Types 1900-30D-1 and E-1 are unbalanced bellows valvesand should not be used for any back pressure applications.

Pressure relief valve - rupture disk combination capacity factor.

Dimensionless value relating the actual vs. theoretical safety reliefvalve flow rate.

Dimensionless value to correct for superheated system. Forsaturated steam Ksh = 1.0 (refer to Table 12.)

Dimensionless value used to correct for the reduction in the safetyrelief valve capacity due to viscosity effects for liquid applications(see Figure 4.)

Dimensionless factor used to adjust for the type of units used inthe sizing equation.

Dimensionless value used to correct for the reduction in the safetyrelief valve capacity due to back pressure for balanced bellowsvalves (only when used on liquid applications, see Figure 3.)Types 1900-30D-1 and E-1 are unbalanced bellows valves andshould not be used for any back pressure applications (nocorrection for liquid conventional valves.)

Molecular Weight of the gas or vapor. This value should beobtained from process data (refer to Table 5.)

Maximum Allowable Working Pressure

The set pressure of the safety relief valve in gauge pressure units.

The pressure at the outlet of the valve in gauge pressure units. Thisvalue is coincident with the rated flowing pressure value.The rated flowing pressure at the inlet of the safety relief valve inabsolute pressure units (psia). This value is the stamped setpressure of the safety relief valve plus the overpressure plus theatmospheric pressure. Refer to the section “Set Pressure andOverpressure Relationships for Sizing”.

The pressure at the outlet of the valve in absolute pressure units(psia). This value is coincident with the rated flowing pressure value.

Capacity in volume per time units.

Reynolds number. A dimensionless number used in obtaining theviscosity correction factor Kv.

Density of gas or vapor:

�, for vapors = (SG) x (Density of Air)

�, for liquids = (SG) x (Density of Water)

Density of Air = 0.0763 lb/ft3 at 14.7 psia, and 60°F (USCS)

Density of Air = 1.2932 kg/m3 at 760 mm Hg and 0°C (metric)

Density of Water = 62.305 lb/ft3 at 70°F (USCS)

Density of Water = 998 kg/m3 at 20°C (metric)

Specific Gravity. A dimensionless number that relates the densitiesof a fluid to that of a standard fluid. The value of SG is 1.0 forthe following standard conditions:

Liquid Standard: Water at 70°F (USCS)Water at 20°C (metric)

Gas Standard: Air at 14.696 psia and 60°F (USCS)Air at 760 mm Hg and 0°C (metric)

The temperature at the inlet of the valve in absolute temperatureunits. This value is coincident with the rated flowing pressurevalue, for example °F + 460.

Capacity in Mass Per Time Units.

Compressibility factor for gas or vapor. If unknown, use Z=1.

Napier Factor. A dimensionless correction factor to the Napiersteam flow equation used only for steam and only in the range ofP1 = 1580 to 3208 psia flowing pressure. Calculate Kn from theequation:

If P is 1423 psig or less, Kn = 1.0. If P is more than 1423 psig,up to and including 3223 psig, Kn is calculated. Note that P1 isthe flowing pressure and is in absolute pressure units.

Prior to sizing Safety Relief Valves, the user should understand the symbols used in the sizing and capacity calculation formulas.

Formula Symbols

P2

Q

R

SG

T

W

Z

Kn

C

Ac

K

Kb

Kc

Kd

Ksh

Kv

Ku

Kw

MW

MAWP

PPb

VS.3Valve Sizing (SRV-1/Q2.02)

Valve Sizing

Set Pressure and OverpressureRelationships for Sizing

Set pressure and overpressure requirements vary with the installation andapplication of the pressure relief valve(s). The installation may requireone or more pressure relief valves per ASME Section VIII and API RP 520.The application will require the pressure relief valve(s) to provideoverpressure protection caused by non-fire or fire-related events.In all cases the overpressure of the pressure relief valve will be thedifference between the accumulation of the system and the pressurerelief valve’s set pressure. In determining the required pressure reliefvalve orifice area, the flowing pressure value (P1) will be set equal to thesystem accumulation value.

Single Valve InstallationsUsed when only one pressure relief valve is required for systemoverpressure protection.1) If the overpressure is not due to a fire exposure event:

a) The set pressure may be equal to or less than the MAWP ofthe protected system.

b) The accumulation of the system must not exceed the larger of3 psi or 10% above the MAWP (see Table 1.)

2) If the overpressure is due to a fire exposure event on a vessel:a) The set pressure may be equal to or less than the MAWP of

the protected system.b) The accumulation of the system must not exceed 21% above

MAWP (see Table 2.)

Multiple Valve InstallationsApplies when more than one pressure relief valve is required for systemoverpressure protection.1) If the overpressure is not due to a fire exposure event:

a) The set pressure of at least one valve must be equal to or lessthan the MAWP of the protected system. The set pressure ofany of the remaining valve(s) must not exceed 1.05 times theMAWP.

b) The accumulation of the system must not exceed the larger of4 psi or 16% above the MAWP (see Table 3.)

2) If the overpressure is due to a fire exposure event on a vessel:a) The set pressure of at least one valve must be equal to or less

than the MAWP of the protected system. The set pressure ofany of the remaining valve(s) must not exceed 1.10 times theMAWP.

b) The accumulation of the system must not exceed 21% aboveMAWP (see Table 2.)

Table 3 - Flowing Pressure for Multiple Valve Installations


Valve Sizing

MAWP of 15 psig to 30 psig

MAWP of 1.02 barg up to and including 2.06 barg

MAWP of 1.05 kg/cm2g up to and including 2.11 kg/cm2g

MAWP higher than 30 psig

MAWP higher than 2.06 barg

MAWP higher than 2.11 kg/cm2g

P1 = MAWP + 3 + 14.7

P1 = MAWP + 0.206 + 1.01

P1 = MAWP + 0.211 + 1.03

P1 = 1.1(MAWP) + 14.7

P1 = 1.1(MAWP) + 1.01

P1 = 1.1(MAWP) + 1.03

Set Pressure and OverpressureRelationships for Sizing

MAWP of 15 psig to 25 psig

MAWP of 1.02 barg up to and including 1.72 barg

MAWP of 1.05 kg/cm2g up to and including 1.75 kg/cm2g




P1 = MAWP + 4 + 14.7

P1 = MAWP + 0.275 + 1.01

P1 = MAWP + 0.281 + 1.03

P1 = 1.16(MAWP) + 14.7

P1 = 1.16(MAWP) + 1.01

P1 = 1.16(MAWP) + 1.03




P1 = 1.21(MAWP) + 14.7

P1 = 1.21(MAWP) + 1.01

P1 = 1.21(MAWP) + 1.03

Table 1 - Flowing Pressure for Single Valve Installations

Table 2 - Flowing Pressure for FireSizing

NOTE: Fire Sizing Situations do not apply to the 820000 Series valve.

Valve Sizing (SRV-1/Q2.02)

Valve Sizing

API Sizing Formulas - USCS

API RP 520 Sizing FormulasUSCS Units

VAPORS OR GASESMass Flow Rate Sizing

(W = lb/hr)

STEAMMass Flow Rate Sizing

(W = lb/hr)

(Q = Standard ft3/Min Flow Rate at 14.7 psia & 60°F)

VAPORS OR GASESVolumetric Flow Rate Sizing

(If Q = U.S. Gallons per minute, Ku = 38)(If Q = Cubic feet per hour, Ku = 5.2143)

LIQUIDSCertified Volumetric Flow Rate Sizing

(Q = Standard ft3/min Flow Rate at 14.7 psia & 60°F)

AIRVolumetric Flow Rate Sizing

Refer to Tables 6 - 8 and select the next larger size above the Ac value calculated.

1/2

3/4

1

1900

2900

3900

Steam, Gas or VaporKd

LiquidKd

.744

.744

.826

.975

.975

.975

Valve Series

VS.5

Kd Factors

K Factors


ASME Sizing Formulas - USCS

ASME Section VIII Sizing FormulasUSCS Units


(W = lb/hr)


(W = lb/hr)



(If Q = U.S. Gallons per minute, Ku = 38)(If Q = Cubic feet per hour, Ku = 5.2143)




Refer to Tables 6 - 11 and select the next larger size above the Ac value calculated.

1/2

3/4

1

1900198229003900

13900 (all except 201 in2)13900 (201 in2 only)

19000820000

Steam, Gas or VaporK

LiquidK

.670

.758

.670

.743N/AN/A.673.743

.855

.855

.855

.878

.877

.850

.878N/A

Valve Series

Valve Sizing

K Factors


Valve Sizing

ASME Section VIII Sizing FormulasMetric Units

ASME Sizing Formulas - Metric


(W = kg/hr)

If P1 = bara, Ku = 131.7

If P1 = kg/cm2a, Ku = 134.26


(W = kg/hr)

If P1 = bara, Ku = 0.5245

If P1 = kg/cm2a, Ku = 0.5144


If P1 = bara, Ku = 131.7

If P1 = kg/cm2a, Ku = 134.26

(Q = Normal m3/hr Flow Rate at 760 mm Hg at 0°F)


If P1 & P2 = bara and Q = liters/min, Ku = 0.849

If P1 & P2 = kg/cm2a and Q = liters/min, Ku = 0.841

If P1 & P2 = bara and Q = m3/hr, Ku = 0.0509

If P1 & P2 = kg/cm2a and Q = m3/hr, Ku = 0.0504

If P1 = bara, Ku = 131.71

If P1 = kg/cm2a, Ku = 134.26


ASME permits metric unit stamping of name plates (ASME Code Case 2116).Refer to Tables 6 - 11 and select the next larger size above the Ac value calculated.

(Q = Normal m3/hr Flow Rate at 760 mm Hg at 0°C) 1/2

3/4

1

1900198229003900

13900 (all except 201 in2)13900 (201 in2 only)

19000820000

Steam, Gas or VaporK

LiquidK

.670

.758

.670

.743Not applicableNot applicable

.673

.743

.855

.855

.855

.878

.877

.850

.878Not applicable

Valve Series


Valve Sizing

Correction Factors

Figure 1 - 1900 Balanced Bellows ValvesVapors & Gases - Correction Factor Kb

Corr

ectio

n Fa

ctor

Kb

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0 10 20 30 40 45 50 60 70 80 90

Total Back Pressure Percentage = x 100Pb

P

Example:Set Pressure - 75 psig

Total Variable Back Pressure - 0 to 40 psigBack Pressure Percentage = 53.3%

Follow dashed example line from 53.3%Back Pressure to the 10% Over Pressure line

and find that flow will be 72% of rated capacityat 10% over pressure. Correction Kb = 0.72

21% OverPressure

16% OverPressure

10% OverPressure

Kb at Total VariableBack Pressures

4075


Valve Sizing

Corr

ectio

n Fa

ctor

Kb

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

0 10 20 30 40 50 60 70 80 90 100

Back Pressure Percentage = x 100

Capacity Curve Kb at Total VariableBack Pressures


Flowing Pressure at 10% OverPressure = 100 + 10 = 110 psig or 124.7 psiaTotal Back Pressure (Constant + Built up)

Back Pressure Percentage = 71.9%

Follow dotted line from back pressure percentage scale tocorrection factor Kb scale and find that Kb equals 0.93

Example:

89.7124.7

P2

P1

Corr

ectio

n Fa

ctor

Kw

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

0 10 20 30 40 50 60 70 80 90

Back Pressure Percentage = x 100

Capacity Curve Kw at Constant and Varying Back Pressures

Example:

Pb

P


Variable Back Pressure - 0 to 50 psigBack Pressure Percentage = 50%

Follow dotted example line from 50% Back Pressureto the Capacity Curve and find that flow will be 65.8%

of rated capacity. Correction Factor Kw = 0.658

50100

Correction Factors

Figure 2 - Non-Bellows ValvesVapor or Gas Flow Curve at All Back Pressures, Correction Factor Kb

Figure 3 - 1900 Balanced Bellows Only - Liquids - Correction Factor Kw


Valve Sizing

10 20 30 50 70 100 200 300 500 700 1000 2000 4000 6000 10000 20000 40000 60000 100000

R = Reynolds Number

1.0

.9

.8

.7

.6

.5

.4

.3

Visc

osity

Cor

rect

ion

Fact

or K

v

When using the following method, it is suggested that the safety reliefvalve be sized first with available application data in order to obtain apreliminary required discharge area (Ac). From the standard orifice sizes,the next larger orifice size should be used in determining the Reynoldsnumber (R) from either of the following relationships:

Where:Q = actual flow rate at the flowing temperature (U.S. gallons

per minute)

SG = specific gravity of the liquid at the flowing temperaturereferred to water = 1.00 at 70°F

Cp = absolute viscosity at the flowing temperature (in centipoises)

A = valve orifice discharge area (square inches)

SSU = Saybolt Seconds Universal (viscosity at the flowing temperature)

After the value of R is determined, the factor Kv is obtained from Figure 4.Factor Kv is applied to correct the “preliminary required discharge area.” Ifthe corrected area exceeds the “chosen standard orifice area”, the abovecalculations should be repeated using the next larger standard orifice size.

Correction Factors

OR

Figure 4


Valve Sizing

Fluid Properties

k

0.500.520.540.560.580.600.620.640.660.680.700.720.740.760.780.800.820.840.860.880.900.920.940.960.981.01

C

238242246250254257261264268271274277280283286289292295297300303305308310313317

k

1.021.041.061.081.101.121.141.161.181.201.221.241.261.281.301.321.341.361.381.401.421.441.461.481.50

C

318320322325327329331333335337339341343345347349351353354356358360361363365

k

1.521.541.561.581.601.621.641.661.681.701.721.741.761.781.801.821.841.861.881.901.921.941.961.982.00

C

366368369371373374376377379380382383384386387389390391393394395397398399400

The relationship of “k” and “C” are expressed by the equation:

Table 4 - Gas Constant C


Valve Sizing

Fluid Properties

* Value at 14.7 pounds per square inch, absolute.

GAS & VAPOR PHASE LIQUID PHASE

FLUID

AcetaldehydeAcetic AcidAcetoneAcetyleneAirAmmoniaArgonBenzeneButadiene 1,3Butane N-Butane ISO-Carbon DioxideCarbon DisulfideCarbon MonoxideChlorineCyclohexaneEthaneEthyl AlcoholEthyl ChlorideEthylene (Ethene)HeliumN-HexaneHydrogen ChlorideHydrogenHydrogen SulfideKeroseneMethaneMethyl AlcoholMethyl ButaneMethyl ChlorideNatural Gas (typical)Nitric Acid (HNO3)Nitric OxideNitrogenNitrous OxideOxygenN-PentanePropanePropyleneStyreneSulfur Dioxide

k*

1.141.15

-1.261.401.331.671.121.121.0941.0941.301.211.401.361.091.221.131.191.261.661.061.411.411.32

-1.311.201.081.201.27

-1.401.401.301.401.071.131.151.071.29

G*AIR = 1

1.5212.073

-0.8991.000.5881.3882.6961.8672.0062.0061.5192.6280.9662.452.9051.041.592.2270.9680.1382.9741.260.0691.176

-0.5541.112.491.7430.656

-1.00360.9671.5191.1042.491.5221.4533.602.21

MW

44.0560.05

-26.0428.9717.0339.9478.1154.0958.1258.1244.0176.1328.0070.9084.1630.0746.0764.5228.054.0086.1736.502.01634.07

-16.0432.0472.1550.4919.00

-30.0028.0044.0032.0072.1544.0942.08104.1464.06

GTEMP °F

646868--

-110-38768686868-3568

-318-2969

-1266850

-152-

68-

-423-

60-263686032-

60-239-422-128-42260-49-536832

GWATER = 1

0.7831.0490.791

--

0.8171.650.8790.6210.5790.5571.1011.2630.8141.580.7790.5460.7890.9030.566

-0.659

-0.0709

-0.8150.4150.7920.6250.952

-1.5021.2691.0261.2261.4260.6310.5850.6090.9061.434

BOILINGPOINT* °F

68245133-119

--27-301176243111

SUBL.116-314-30177-12717354

-155-452156-118-423-76-

-25814982-11-

187-240-321-131-29797-44-5429314

CRITICALTEMP °F

37061145597

-222270-18855130630727388523-2182915389046936949

-450454124-400213

--116464370290

--

-137-23398

-182386206197706315

Table 5 - Constant and Capacity Conversion Factors for Common Fluids


Valve Sizing

(Ac) APIEffectiveOrificeArea(In2)

0.1100.1960.3070.5030.7851.2871.8382.8533.6004.3406.38011.05016.00026.000

N/AN/A

OrificeLetterSize**

DEFGHJKLMNPQRTVW

API SetPressureRange(psig)

5 - 60005 - 60005 - 50004 - 37054 - 27505 - 27005 - 22005 - 15005 - 11006 - 11007 - 10007 - 6007 - 3009 - 300

N/AN/A

(Ac) ASMEand Actual

OrificeArea(In2)

0.12790.22790.35680.58490.91271.49602.13803.31704.18605.04707.417012.850018.600030.2100*

50.2678.996

AvailableSet

PressureRange(psig)

5 - 62505 - 62505 - 62504 - 50004 - 34185 - 27005 - 25405 - 22005 - 16006 - 16007 - 16007 - 9007 - 6509 - 30015 - 30015 - 300

API Standard Orifice Areas - 1900

* Prior to 1999 this area was 28.62 in2. Consult factory for clarification.

** V and W orifices should be sized using ASME formula and orifice area.

Table 6 - 1900 Series (USCS)


Valve Sizing

(Ac) APIEffectiveOrificeArea(in2)

0.1100.1960.3070.5030.7851.2871.8382.8533.6004.3406.38011.05016.00026.000

N/AN/A

OrificeLetterSize

*

DEFGHJKLMNPQRTVW


5 - 60005 - 60005 - 50004 - 37054 - 27505 - 27005 - 22005 - 15005 - 11006 - 11007 - 10007 - 6007 - 3009 - 300

N/AN/A

(Ac) ASMEand Actual

OrificeArea(in2)

0.12790.22790.35680.58490.91271.49602.13803.31704.18605.04707.417012.850018.600030.210050.2678.996

AvailableSet

PressureRange(psig)

5 - 37505 - 37505 - 37504 - 37504 - 37505 - 37505 - 37505 - 37505 - 22506 - 22507 - 22507 - 15007 - 15009 - 150015 - 67515 - 385


* V and W orifices should be sized using ASME formula and orifice area.



Valve Sizing

(Ac) APIEffectiveOrificeArea(in2)

0.1100.1960.3070.5030.7851.2871.8382.8533.6004.3406.38011.05016.00026.000

OrificeLetterSize

DEFGHJKLMNPQRT


5 - 37055 - 37055 - 37054 - 37054 - 27505 - 27005 - 22005 - 15005 - 11006 - 11007 - 10007 - 6007 - 3009 - 300

(Ac) ASMEand Actual

OrificeArea(in2)

0.12790.22790.35680.58490.91271.49602.13803.31704.18605.04707.417012.850018.600030.2100*

AvailableSet

PressureRange(psig)

5 - 37505 - 37505 - 37504 - 37504 - 34185 - 27005 - 25405 - 22005 - 16006 - 16007 - 16007 - 9007 - 6509 - 300


* Prior to 1999 this area was 28.62 in2. Consult factory for clarification.



Valve Sizing


InletSize(in)

1/2, 3/4, 11/2, 3/4, 1

3/4, 11

1-1/22

1/2, 3/4, 13/4, 1

11-1/2

23/43/4

1

ModelNumber

19096L19110L19126L19226L19357L19567L19096M19126M19226M19357M19567M19096H19126H19226H

SetPressureRange(psig)

5 - 2905 - 2905 - 2905 - 2905 - 2905 - 290

291 - 2000291 - 2000291 - 2000291 - 1500291 - 1500

2001 - 50002001 - 80002001 - 6400

(Ac)Actual (ASME)

OrificeArea(in2)

.096

.110

.126

.226

.357

.567

.096

.126

.226

.357

.567

.096

.126

.226



Valve Sizing

16182022

15 - 30015 - 30015 - 30015 - 300

114.0143.1176.7201.0

API Standard Orifice Areas1982, 820000, and 13900

Inlet Size(in)

(Ac) Actual (ASME)Orifice Area

(in2)

Set PressureRange(psig)

1/23/4

11-1/2

10 - 50010 - 50010 - 50010 - 500

0.1210.2160.3320.857

Inlet Size(in)

(Ac) Actual (ASME)Orifice Area

(in2)

Set PressureRange(psig)

Table 10 - 1982 & 820000 Series (USCS)



Valve Sizing

0.987

0.998

0.984

0.979

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.957

0.963

0.970

0.977

0.972

0.968

0.968

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.930

0.935

0.940

0.945

0.951

0.957

0.963

0.963

0.961

0.961

0.962

0.964

0.968

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.905

0.909

0.913

0.917

0.921

0.926

0.930

0.935

0.940

0.946

0.952

0.958

0.958

0.958

0.958

0.960

0.962

0.965

0.969

0.974

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.882

0.885

0.888

0.892

0.895

0.898

0.902

0.906

0.909

0.914

0.918

0.922

0.927

0.931

0.936

0.942

0.947

0.953

0.958

0.959

0.960

0.962

0.964

0.966

0.969

0.973

0.977

0.982

0.987

0.993

-

-

-

-

-

0.861

0.864

0.866

0.869

0.871

0.874

0.877

0.880

0.883

0.886

0.889

0.892

0.896

0.899

0.903

0.906

0.910

0.914

0.918

0.923

0.927

0.931

0.936

0.941

0.946

0.952

0.958

0.963

0.968

0.970

0.972

0.973

0.973

0.973

0.974

0.841

0.843

0.846

0.848

0.850

0.852

0.854

0.857

0.859

0.862

0.864

0.867

0.869

0.872

0.875

0.878

0.880

0.883

0.886

0.890

0.893

0.896

0.899

0.903

0.906

0.910

0.914

0.918

0.922

0.926

0.930

0.934

0.936

0.938

0.940

0.823

0.825

0.826

0.828

0.830

0.832

0.834

0.836

0.838

0.840

0.842

0.844

0.846

0.848

0.850

0.852

0.855

0.857

0.860

0.862

0.864

0.867

0.870

0.872

0.875

0.878

0.880

0.883

0.886

0.889

0.892

0.894

0.895

0.895

0.896

0.805

0.807

0.808

0.810

0.812

0.813

0.815

0.816

0.818

0.820

0.822

0.823

0.825

0.827

0.828

0.830

0.832

0.834

0.836

0.838

0.840

0.842

0.844

0.846

0.848

0.850

0.852

0.854

0.857

0.859

0.861

0.863

0.863

0.863

0.862

0.789

0.790

0.792

0.793

0.794

0.796

0.797

0.798

0.800

0.801

0.803

0.804

0.806

0.807

0.809

0.810

0.812

0.813

0.815

0.816

0.818

0.820

0.821

0.823

0.825

0.826

0.828

0.830

0.832

0.833

0.835

0.836

0.836

0.835

0.835

0.774

0.775

0.776

0.777

0.778

0.780

0.781

0.782

0.783

0.784

0.785

0.787

0.788

0.789

0.790

0.792

0.793

0.794

0.796

0.797

0.798

0.800

0.801

0.802

0.804

0.805

0.807

0.808

0.809

0.811

0.812

0.813

0.812

0.811

0.810

0.759

0.760

0.761

0.762

0.763

0.764

0.765

0.766

0.767

0.768

0.769

0.770

0.771

0.772

0.774

0.774

0.776

0.777

0.778

0.779

0.780

0.781

0.782

0.784

0.785

0.786

0.787

0.788

0.790

0.791

0.792

0.792

0.791

0.790

0.789

0.745

0.746

0.747

0.748

0.749

0.750

0.750

0.751

0.752

0.753

0.754

0.755

0.756

0.757

0.758

0.759

0.760

0.760

0.761

0.762

0.763

0.764

0.765

0.766

0.767

0.768

0.769

0.770

0.771

0.772

0.773

0.774

0.772

0.771

0.770

0.732

0.733

0.733

0.734

0.735

0.736

0.736

0.737

0.738

0.739

0.740

0.740

0.741

0.742

0.743

0.744

0.744

0.745

0.746

0.747

0.748

0.749

0.749

0.750

0.751

0.752

0.753

0.754

0.754

0.755

0.756

0.756

0.755

0.754

0.752

0.719

0.720

0.721

0.721

0.722

0.723

0.723

0.724

0.725

0.725

0.726

0.727

0.728

0.728

0.729

0.730

0.730

0.731

0.732

0.732

0.733

0.734

0.735

0.735

0.736

0.737

0.737

0.738

0.739

0.740

0.740

0.740

0.739

0.738

0.736

0.708

0.708

0.709

0.709

0.710

0.710

0.711

0.712

0.712

0.713

0.713

0.714

0.715

0.715

0.716

0.716

0.717

0.718

0.718

0.719

0.719

0.720

0.721

0.721

0.722

0.723

0.723

0.724

0.724

0.725

0.726

0.726

0.724

0.723

0.721

0.696

0.697

0.697

0.698

0.698

0.699

0.699

0.700

0.700

0.701

0.701

0.702

0.702

0.703

0.703

0.704

0.704

0.705

0.705

0.706

0.707

0.707

0.708

0.708

0.709

0.709

0.710

0.710

0.711

0.711

0.712

0.712

0.710

0.709

0.707

50

100

150

200

250

300

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

1050

1100

1150

1200

1250

1300

1350

1400

1450

1500

1550

1600

1650

1700

1750

Superheat Correction Factor Ksh , Total Temperature in ˚F of Superheated Steam

400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200

Flowing

Press.

(psia)

Table 12 - Superheat Correction Factor Ksh

Superheat Correction Factors


Valve Sizing

Superheat Correction Factors

1800

1850

1900

1950

2000

2050

2100

2150

2200

2250

2300

2350

2400

2450

2500

2550

2600

2650

2700

2750

2800

2850

2900

2950

3000

3050

3100

3150

3200

Superheat Correction Factor Ksh , Total Temperature in ˚F of Superheated Steam

400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200

Flowing

Press.

(psia)

Table 12 - Superheat Correction Factor Ksh

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.975

0.976

0.977

0.979

0.982

0.985

0.988

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.942

0.944

0.946

0.949

0.952

0.954

0.956

0.956

0.955

0.954

0.953

0.952

0.952

0.951

0.951

0.951

0.951

0.952

0.952

0.953

0.956

0.959

0.963

-

-

-

-

-

-

0.897

0.897

0.898

0.898

0.899

0.899

0.900

0.900

0.901

0.901

0.901

0.902

0.902

0.902

0.902

0.902

0.903

0.903

0.903

0.903

0.903

0.902

0.902

0.902

0.901

0.899

0.896

0.894

0.889

0.862

0.862

0.862

0.861

0.861

0.860

0.860

0.859

0.859

0.858

0.857

0.856

0.855

0.854

0.852

0.851

0.849

0.848

0.846

0.844

0.842

0.839

0.836

0.834

0.831

0.827

0.823

0.819

0.815

0.834

0.833

0.832

0.832

0.831

0.830

0.828

0.827

0.826

0.825

0.823

0.822

0.820

0.818

0.816

0.814

0.812

0.809

0.807

0.804

0.801

0.798

0.794

0.790

0.786

0.782

0.777

0.772

0.767

0.810

0.809

0.807

0.806

0.805

0.804

0.802

0.801

0.799

0.797

0.795

0.794

0.791

0.789

0.787

0.784

0.782

0.779

0.776

0.773

0.769

0.766

0.762

0.758

0.753

0.749

0.744

0.738

0.733

0.788

0.787

0.785

0.784

0.782

0.781

0.779

0.778

0.776

0.774

0.772

0.769

0.767

0.765

0.762

0.759

0.756

0.754

0.750

0.747

0.743

0.739

0.735

0.731

0.726

0.722

0.716

0.711

0.705

0.768

0.767

0.766

0.764

0.762

0.761

0.759

0.757

0.755

0.753

0.751

0.748

0.746

0.743

0.740

0.738

0.735

0.731

0.728

0.724

0.721

0.717

0.713

0.708

0.704

0.699

0.693

0.688

0.682

0.751

0.749

0.748

0.746

0.744

0.742

0.740

0.738

0.736

0.734

0.732

0.729

0.727

0.724

0.721

0.718

0.715

0.712

0.708

0.705

0.701

0.697

0.693

0.688

0.684

0.679

0.673

0.668

0.662

0.735

0.733

0.731

0.729

0.728

0.726

0.724

0.722

0.720

0.717

0.715

0.712

0.710

0.707

0.704

0.701

0.698

0.695

0.691

0.687

0.684

0.679

0.675

0.671

0.666

0.661

0.656

0.650

0.644

0.720

0.718

0.716

0.714

0.712

0.710

0.708

0.706

0.704

0.702

0.699

0.697

0.694

0.691

0.688

0.685

0.682

0.679

0.675

0.671

0.668

0.663

0.659

0.655

0.650

0.645

0.640

0.634

0.628

0.705

0.704

0.702

0.700

0.698

0.696

0.694

0.692

0.690

0.687

0.685

0.682

0.679

0.677

0.674

0.671

0.664

0.664

0.661

0.657

0.653

0.649

0.645

0.640

0.635

0.630

0.625

0.620

0.614


Valve Sizing

ASME Saturated Water ValveSizing / Rupture Disk Combinations

Below is a copy of Appendix 11, Para. 11-2 and Flow Capacity CurveFig. 11-2 from the ASME Code, Section VIII, which is used indetermining valve relieving orifice areas required for saturatedwater service.(a) Since it is realized that the saturated water capacity is configuration

sensitive, the following applies only to those safety valves that havea nozzle type construction (throat to inlet area ration of 0.25 to0.80 with a continuously contoured change) and have exhibited acoefficient Kd in excess of 0.90. No saturated water rating shallapply to other types of construction.

NOTE: The manufacturer, user and Inspector are all cautioned that for the following ratingto apply, the valve shall be continuously subjected to saturated water. If, afterinitial relief the flow media changes to quality steam, the valve shall be rated asper dry saturated steam. Valves installed on vessels or lines containing steam-water mixture shall be rated on dry saturated steam.

(b) To determine the saturated water capacity of a valve currently ratedunder UG-131 and meeting the requirement of (a) above, refer toFig. 5. Enter the graph at the set pressure of the valve, movevertically upward to the saturated water line and read horizontallythe relieving capacity. This capacity is the theoretical, isentropicvalue arrived at by assuming equilibrium flow and calculated valuesfor the critical pressure ratio.

Example of the method for sizing safety relief valves using this curve:

Fluid . . . . . . . . . . . . . . . .Saturated WaterRequired Capacity . . . . . . .183,795 lb/HrAllowable Overpressure . . . . . . . . . . .10%Set Pressure . . . . . . . . . . . . . . . .600 psigRelieving Temperature . . . . . . . . . .470°F

Calculations:1. Consult Saturated Water Capacity Curve (Fig. 5) for capacity of one

square inch of orifice area at given set pressure.Capacity of one square inch = 84,000 lb/hr (at 600 psig set pressure)2. Divide required capacity by the capacity of one square inch to get the

required orifice area:

3. Therefore, in this case, an “L” orifice valve is required that has arelieving orifice (ASME) area of 3.317 square inches.

Two possibilities exist for sizing safety relief valves in conjunction withrupture disks at their inlet. First, the rupture disk has not been ASMEcertified in combination with the safety relief valve; second, the rupturedisk has been ASME certified in combination with the safety relief valve.

ASME Rupture Disk Combinations KcA) Rupture Disk not Certified with the Safety Relief ValveFor those situations, the safety relief valve is sized in accordance withpreviously identified methods. However, this combination of rupture diskand pressure relief valve can only be credited with 90% of its ASMEcertified relieving capacity.B) Rupture Disk is certified with the Safety Relief Valve KcIn this case, the particular type of safety relief valve has been actuallyflow tested in combination with a unique rupture disk supplier’s designtype and a combination capacity factor established. The combinationcapacity factor is published by the National Board of Boiler & PressureVessels.The safety relief valve ASME certified relieving capacity must bemultiplied by the combination capacity factor to obtain the allowableASME relieving capacity for the combination of the safety relief valve andrupture disk.

C) In all cases ASME installation requirements must be followed.Refer to ASME Code Section VIII, paragraph UG-127.

0 200 600 1000 1400 1800 2200 2600 3000

Set Pressure (psig)

26

24

22

20

18

16

14

12

10

8

6

4

2

0

Flow

Cap

acity

x 1

0-4

(lb/h

r/in2 )

Figure 5Flow Capacity Curve for Rating NozzleType Safety Valves on Saturated Water

(Based on 10% Overpressure)


Valve Sizing

Sizing Formula forThermal Expansion of Trapped Liquids*

Flow rates for relieving devices protecting heat exchangers, condensersand coolers against thermal expansion of trapped liquids can beapproximated by use of the following:

Where:

GPM = Flow rate in U.S. gallons per minute at the flowing temperature.B = Cubical expansion coefficient per degree Fahrenheit for the liquid at

the expected temperature differential. It is best to obtain thisinformation from the process design data: however, shown here aretypical values for hydrocarbon liquids and for water:

B3° to 35° API gravity . . . . . . . . . . . 0.000435° to 51° API gravity . . . . . . . . . . 0.000551° to 64° API gravity . . . . . . . . . . 0.000664° to 79° API gravity . . . . . . . . . . 0.000779° to 89° API gravity . . . . . . . . . . 0.000889° to 94° API gravity . . . . . . . . . . 0.0008594° to 100° API gravity& lighter . . . . 0.0009Water . . . . . . . . . . . . . . . . . . . . . . 0.0001

H = Total heat transfer rate, in BTU/hr. This should be taken as themaximum exchanger duty during operation.

G = Specific gravity referred to water = 1.00 at 60˚. Compressibility ofliquid is usually ignored.

C = Specific heat in BTU/lb/˚F of the trapped fluid.

*Extracted from API RP 520 Part 1 - Design

API Fire SizingThe hazard of fire in operating plants that handle or process flammableliquids or gases must be a consideration in the sizing of safety relief valves.Any pressure vessel, or other pressure containing equipment protected bypressure relief valves under normal operating conditions, should be firesized in the event that the equipment may be exposed to fire (althoughcontents of the vessel are not flammable.)A fire may occur due to leakage of flammable material from equipmentand pipe lines, or may be caused by operational mishaps. If accidentallyignited, this burning material will immediately endanger adjacent vesselsand equipment. Burning material can become an open, free burning firequickly and carried some distance from the source of the leak by the slopeof the ground in the case of liquids and by air currents with gas or vapor.

In the event that an open fire occurs around equipment or vessels, heatwill naturally be absorbed by anything coming in contact with the flamesand/or hot gases of the fire. If this heat absorption in a vessel continuesfor a long enough time, the vessel contents will be heated and thepressure will rise until the safety relief valve opens.Therefore it is necessary, when determining the safety relief valve size,to consider the probability of fire exposure.

A. FireSizing For Liquid Hydrocarbons

1) The following information is necessary prior to fire sizing avessel containing a liquid.

Tank Size (dimensions describing shape)Mounting (horizontal or vertical; height above ground)Fluid (composition by names)Normal liquid level (NLL): % full, depth of fluid or liquid-fullF factor - See Table A1; if not known, use a factor of 1 Operating pressureSet pressureOperating temperatureSaturation temperature at P1K (ratio of specific heats)M (molecular weight)Z (compressibility factor); if not known, assume Z = 1

Thermal Expansion / API Fire Sizing

Bare vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0Insulated vesselb (These arbitrary insulation conductance values are shown asexamples and are in British Thermal Units per hour per square foot per degreeFahrenheit):

4 . . . . . . . . . . . . . . . . . . . . 0.32 . . . . . . . . . . . . . . . . . . . . 0.151 . . . . . . . . . . . . . . . . . . . . 0.0750.67 . . . . . . . . . . . . . . . . . 0.050.5 . . . . . . . . . . . . . . . . . . 0.03760.4 . . . . . . . . . . . . . . . . . . 0.030.33 . . . . . . . . . . . . . . . . . 0.026

Water application facilities, on bare vesselc . . . . . . . . . . . . . . . . . . . . 1.0Depressurizing and emptying facilitiesd . . . . . . . . . . . . . . . . . . . . . . . 1.0

a These are suggested values for the conditions assumed in A.2. When these conditions do not exist,engineering judgment should be exercised either in selecting a higher factor or in providing means ofprotecting vessels from fire exposure as suggested in API RP 520, Part 1 - Sizing and Selection, D.8.b Insulation shall resist dislodgement by fire-hose streams. For the examples, a temperature differenceof 1600°F was used. These conductance values are based on insulation having thermal conductivityof 4 BTU/hr-ft2 -˚F per inch at 1600°F and correspond to various thicknesses of insulation between1 and 12 inches.c No reduction is given due to the inherent variables present, e.g. freezing weather, high windsclogged systems, etc.d No reduction is given due to the inherent variables present, e.g. inaccessibility of manual controls,timing of depressurization, direction of automated controls, etc.

Table A1 - Type of Equipment - Factor Fa


Valve Sizing

SPHERE A = πD2

Vertical cylinder with flat ends . . . . . . . . . . . A = π(DL + D2/2)

Vertical cylinder with elliptical ends . . . . . . . A = π(DL + 2.61)D2

Vertical cylinder with hemispherical ends . . . . . . A = π(DL + D2)

Horizontal cylinder with flat ends . . . . . . . . . A = π(DL + D2/2)

Horizontal cylinder with elliptical ends . . . . . A = π(DL + 2.61)D2

Horizontal cylinder with hemispherical ends . . . . . A = π(DL+D2)

π= 3.1416

* It is recommended that the total wetted surface (“A” in the above formulas) is at least thatwetted surface included within a height of 25 feet above grade, or in the case of spheres andspheroids, at least the elevation of the maximum horizontal diameter or a height of 25 feet,whichever is greater. The term “grade” usually refers to ground grade, but may be at any levelat which a sizable fire could be sustained.

API Fire Sizing

2) Determine Heat Absorption

Q = 21,000 FA0.82

Where: Q = Total heat absorption (input) into the wetted surface in

BTU(British Thermal Units) per hourF = Environment Factor (see Table A1)A = Total wetted surface area in square feet

When adequate draining and fire fighting equipment do not exist,

Q = 34,500 FA0.82

The determination of the total wetted surface area can becomelengthy for certain vessel configurations, such as a horizontalcylindrical vessel with elliptical ends. Total surface area formulas forseveral different vessel shapes are listed in Table A2.

Total wetted surface area (A) = Fwp x Total vessel surface area(Fwp = Wetted Perimeter factor)

For horizontal vessels, use Table A2 and Figure 6. For vertical vessels,use Table A2 and Figure 7.

3) Determination of vapor discharge capacity in lb/hr

Determine Q from step (2).Determine latent heat of vaporization from the fluid properties.

4) Determination of orifice area requirementsValves are to be sized in accordance with previously definedmethods given in “Sizing Formulas” (see pages VS.5 - VS.7.)

API Fire Sizing Example(for vessels containing liquid hydrocarbons)

a) Sample Vessel Information

Tank size: 6' dia. x 12' long, seam to seam, elliptical endsMounting: Horizontal and 3' above groundFluid: PropaneNormal liquid level: 80% filledF factor: 1 (no insulation) (from Table A1) Operating Pressure: 100 psigSet Pressure: 250 psigOperating Pressure: 80°FSaturation Temperature: 142°FK: 1.13M (molecular weight): 44.09Z (compressibility factor): 1Latent Heat of vaporization: 110 BTU/lb

b) SolutionWetted surface area:Enter 80% filled on Figure 6 to determine that Fwp = .67 Select total surface area formula from Table A2 for a horizontal cylinder with elliptical ends.A = Fwp x [ π(DL + 2.61 D2)]A = .67 x (π x 6 x 12 + 2.61 x 6 x 6) = 214.5 sq. ft.

Heat absorbed:Q = 21000 FA0.82

Q = 21000 (1) 214.50.82 = 1,713,940 BTU/hr

Vapor generated:

Table A2 - Total Surface Area Formulas*


Valve Sizing

API Fire Sizing

B. Fire Sizing For Vessels Containing Gases

1) The following information is necessary prior to fire sizing avessel containing a vapor or gas.

Tank Size: Dimensions describing shapeMounting: Horizontal or vertical; height above groundFluid: Composition by names of specific heatsOperating pressure: P° (psia)Set pressure, P (psig)Operating temperature: T° (˚F + 460) Relieving temperature: If not known calculate as shown below:

P = Set pressure, psigP1 = Flowing pressure, psia = (P x 1.21) + 14.7P° = Normal Operating pressure, psiaT° = Normal operating temperature absolute (˚R)T1 = Relieving temperature = T1 - 460

NOTE: Use caution when T1 exceeds 1100°F for carbon steel.

2) Determine orifice area requirement.The required orifice area for a safety relief valve on a gas-containing vessel exposed to an open fire can be determined bythe following formula.

F' can be determined from the following relationship. Therecommended minimum value of F' is 0.01; when the minimumvalue is unknown, F' = 0.045 should be used.

Where:

P� = normal operating gas pressure, in pounds per square inchabsolute.

T� = normal operating gas temperature, in degrees Rankine.

API Fire Sizing Example(for vessels containing gases)

a) Information required

Tank size: 5' dia. x 12' long seam-to-seam, flat ends.Mounting: Horizontal and 2" above gradeFluid: ISOBUTANE VAPOR k: for isobutane = 1.094C: 327Operating pressure: 110 psigSet pressure: 150 psigOperating temperature: 160°FRelieving temperature: Not knownT: 1025°F

b) SolutionCalculate flowing pressure:P1 = 150 x 1.21 + 14.7 = 196.2 psiaP° = 110 + 14.7 = 124.7 psiaT˚= 160 + 460 = 620° R absolute

Calculate flowing temperature:

Fahrenheit flowing temperature or gas temperature at P1:

Where:A = effective discharge area of the valve, in square inches.A1 = exposed surface area of the vessel, in square feet.P1 = upstream relieving pressure, in pounds per square inchabsolute. This is the set pressure plus the allowable overpressureplus the atmospheric pressure.C = coefficient determined by the ratio of the specific heat of the gasat standard conditions. This can be obtained from Tables 4 and 5.

The recommended maximum vessel wall temperature for the usualcarbon steel plate materials is 1100°F. Where vessels arefabricated form alloy materials, the value for T� should be changedto a more appropriate recommended maximum.

T� = vessel wall temperature, in degrees Rankine.T1 = gas temperature, absolute, in degrees Rankine, at theupstream pressure, determined from the following relationship:


Valve Sizing

API Fire Sizing

Determination of Relief Valve Factor F1 :

F' = 0.012

Determination of exposed vessel surface area:Select wetted surface area formula from Table A2 for “horizontalcylinder with flat ends”:

Now put values in the formula as follows:


Valve Sizing

Wet

ted

Perim

eter

Fac

tor F

wp

1.0

0.8

0.6

0.4

0.2

0% 20% 40% 60% 80% 100%

Volume of Liquid (% of Tank Volume)

API Fire Sizing

Figure 6 - Horizontal Tank Figure 7 - Vertical Tank


Valve Sizing

Sizing for Multiple Fluids (Gas / Liquid)Per API (not a Diers Methodology)

To properly size for a mixed flow application per API guidelines, thefollowing steps are required:

1. Determine the quantity of gas flow required.

2. Determine the quantity of liquid flow required.

NOTE: Refer to Page VS.3 for definition of formula symbols.

3. Use the applicable flow equations for each media to determine theorifice area required to flow each media.

4. The orifice area of valve selected must equal or exceed the sum ofthe flow area required for the gas and the flow area required for theliquid.

5. The proper selection would be an H orifice, which has an orificearea of 0.785 sq. in.

6. Due to the calculated orifice area required in the example, additionalcalculations should be considered utilizing the 820000 or 19000 Seriesformulas. This may allow a less expensive valve selection.

Example:

Given:

Set Pressure: 100 psigOverpressure: 10%Specific Gravity: 1 for WaterRel. Temp: 68°FRequired Capacity: Air - 800 SCFM

Water - 35 GPMBack Pressure: 0 psig

A. Solve for orifice area required for air capacity

Q = 800 SCFMP1 = 100 (1.1) + 14.7 = 124.7Ta = 68 + 460 = 528Z = 1Kb = 1Kd = .95

B. Solve for orifice area required for water capacity.

Q = 35 gpmG = 1P = 100Pb = 0Kd = .62Kv = 1Kw = 1

NOTE: Formula used in ASME - Liquid Trim

C. Total orifice required = .37 sq. in. (air) + 0.132 sq. in.(water) or .502 sq. in.


Valve Sizing

Organic Fluid Systems

The use of Organic Fluid Systems falls under special rules for sizing andvalve selection. Organic fluids are known under a variety of trade namesas noted below:

TRADE NAME COMPANY

Thermia Shell Oil Co.

Dowtherm Dow Chemical Co.

Therminol Monsanto Chemical Co.

Caloria Exxon Corp.

Mobiltherm Mobil Corp.

Ucon Union Carbide Corp.

Depending on the type of system in which the fluid is used, valveselection may be affected. The following criteria should be used in valveselections:

VaporsOrganic vapor pressure relief valve requirements are specified inASME Section I PVG. See the 1900P section in this catalog.

LiquidsIn cases where the fluid is not vaporized, as would be the case whenheat transfer is involved, the valve must be sized on the basis of liquid.The LA liquid trim valves must be supplied and applicable sizingequations used.

The pressure relief valve requirements for these applications are containedin ASME Section VIII.

Documents

Consolidated Relief Valve