Folder 48X CS 09 07 2008 · 2015. 6. 18. · ASME Section VIII – National Board certified capacities (single trim for steam, gas and liquid service): UV-stamp ASME Section II –

The-Safety-Valve.com

CleanServiceCleanServiceSafety Relief ValvesSeries 48XType 481 · 483 · 488Type 484 · 485

CATALOG

LES

Contents

Series 48X

Type 483Contents 37Applications 38Features and Benefits 38Materials 39How to Order 40Article Numbers 42Available Connections 42Dimensions and Weights 43Pressure Temperature Ratings 43Available Options 44Selection Chart H8 45Spare Parts 46Surface Quality 47Capacity US / Metric Units 48Approvals 50


GeneralApplications 5Features and Benefits 5Codes and Standards 5Selection – Standard 6Selection – Superior 7HyTight Assembly 8Low dead space 9Surface Quality 10Accessories and Options

- LESER Surface Definition 11- Surface Definition acc. ASME BPE 12- LESER Surface Grade (LSG) 13- Soft seal disc 14- Soft seal selection 15- Lift indicator 16- Caps and Levers Overview 17- Cap H2, packed lifting knob H4 18- Packed lever H4, size I and size II 19- Pneumatic lifting device H8, single piston 20- Pneumatic lifting device H8, double piston 21

FAQ’s 22


Type 481Gastight cap H2


Clean Service Safety Relief ValvesContents

Type 488Packed lever H4

SERLWN 473.01


3

Type 485 Contents 85Applications 86Features and Benefits 86Materials 87How to Order 88Article Numbers 90Dimensions and Weights 91Pressure Temperature Ratings 91Available Options 92Selection Chart H8 93Spare Parts 94Surface Quality 95Capacity US / Metric Units 96Approvals 98

Type 484Contents 71Applications 72Features and Benefits 72Materials 73How to Order 74Article Numbers 76Dimensions and Weights 77Pressure Temperature Ratings 77Available Options 78Selection Chart H8 79Spare Parts 80Surface Quality 81Capacity US / Metric Units 82Approvals 84

Type 484Packed lifting device H4

Type 485Pneumatic lifting device H8

LWN 473.01

Clean Service Safety Relief ValvesGeneral

Series 48X

4

Type 483

Type 484

Type 485

LESER´ s 48X series, spring

loaded safety relief valves were devel-

oped in close cooperation with plant

engineers and service specialists to

protect sensitive processes and in-

stallations against overpressure with-

out putting hygienic requirements at

risk.

LESER´ s 48X series valves are

designed and manufactured to highest

standards and fulfill ASME (Sec. VIII,

Div. 1), FDA and BPE (Bioprocessing

Equipment – 2002) requirements, as

well as the European standard EN

1672-2 and those of many other coun-

tries.

LWN 473.01

Clean Service Safety Relief Valves Applications · Features and Benefits · Codes and Standards

5

Applications

LESER´ s Clean Service 48X seriesvalves represent the ultimate solutionfor all critical, clean service areas of

● Food industry● Breweries and beverage● Pharmaceutical industry● Cosmetic industry● Chemical industry● Special processes

Features and Benefits

LESER 48X series valves are availablein a wide variety of types, ma-terials and options to accommodateany application:

Scope of design● Six valve sizes from 1” through 4”● Nine orifice sizes from 0.5*D through P● Materials: 316L stainless steel as a

standard● Standard soft seat for superior tight-

ness● Packed lifting lever, gastight cap or

pneumatic lifting device

No bacteria traps or contaminationdue to● Minimum dead space design and

flushmounting capability● Wetted-part surfaces in compliance

with ASME BPE 2002, part SD tableSF-5 and SF-6

● Gap and crevice free design of inter-nals

● Standard elastomer bellows for pro-tection of the hard to clean parts

● Self-draining body design, avoidsresidues

● Use of FDA compliant elastomer

Automatic plant operation duringproduction and cleaning● Optional pneumatic lifting device for

cleaning in place (CIP) or sterilizingin place (SIP)

● Optional proximity switch to indicatethe operating status of the valve

● Self-draining body design andAseptic O-ring disc with bellowsassure a cleanable outlet of the valve

Ease of plant design, installation andoperation● Variety of capacities and versions to

fit any application● Multiple choice of sanitary connec-

tions● Single trim for steam, gas and liquid

for less spare parts and easier main-tenance

Codes and Standards

LESER´ s Clean Service 48X seriesvalves comply with the following codesand standards:

● ASME Section VIII – National Boardcertified capacities (single trim forsteam, gas and liquid service): UV-stamp

● ASME Section II – materials● ASME B 16.34 and ASME B16.5● ASME BPE 2002● FDA 21 CFR Part 177.2600● BN2● API 527, NACE MR 0175● CRN● EN ISO 4126-1● EN 1672-2● PED 97 / 23 / EC (CE-marking),

VdTUEV-SV 100 ● AD 2000-Merkblatt A2● Others

Type 481

Cleanability Inlet ■ ■ ■

Cleanability Outlet ■ ■ ■

Capacity ■ ■ ■

Orifice 0.5 x D

Designed for small capacity; Type 481offers protection for installations inwhich Clean Service properties arerequired only at the valve inlet, e.g. pro-tection of gas systems for the bottlingof beverages.

Type 483




Orifice D – F

Designed for small to medium capacity;Type 483 has optimized Clean Serviceproperties for applications requiring Tri-Clamp® connections. Type 483 isapplicable in all Clean Service areas(e.g. bottle filling machines, fermenters).

Type 488




Orifice G – P

Designed for high capacity; Type 488provides Clean Service properties forapplications requiring larger capacities.Type 488 is applicable in large plants,breweries and the beverage industry.

LWN 473.01

Clean Service Safety Relief Valves Selection – Standard

Series 48X

6

SelectionStandard




Type 484




Orifice D – F

Designed for small to medium capacity;Type 484 meets the highest sanitaryrequirements for high purity applica-tions, e.g. fermentors. The designincorporates a dead space free vesselconnection, which is directly weldedinto the vessel wall and allows maxi-mum cleanability of the valve inlet.

Type 485




Orifice D – F

Designed for small to medium capacity;Type 485 meets the highest sanitaryrequirements for high purity applica-tions, e.g. fermentors. The designincorporates a dead space free pipeconnection, which is directly weldedinto the pipework and allows maximumcleanability of the valve inlet. Type 485 can be used in applicationswhere a direct vessel connection usedby the Type 484 is not possible, e.g.glass vessels.

LWN 473.01

Clean Service Safety Relief Valves Selection – Superior

7

SelectionSuperior



LWN 473.01

Clean Service Safety Relief ValvesHyTight Assembly

Series 48X

8

HyTight Assembly

Cleanability first – this is the guidelinefor the design of the LESER CleanService Safety Valves. Series 48X pro-vides an optimum of cleanability. Thefollowing design features represent theultimate solution for all critical cleanservice applications.

HyTight stands for Hygienic andTightness.

HyTight AssemblyThe aseptic O-ring disc is the “heart” ofthe series 48X. This unique design provides for the firsttime a really cleanable in- and outlet ofa safety valve:

The O-ring sealing provides superiortightness.The elastomer bellows protects thehard-to-clean parts in the guidingand bonnet area against contamina-tion. Please note: An elastomer bellows isnot back pressure compensatinglike a stainless steel bellows.All fixing elements like screws andnuts are placed inside of the bel-lows. Crevice free internals, rinsed O-ringsand FDA compliant elastomersinsure there are no bacteria traps.

Availability● Standard for Types 483, 484, 485● not available for Type 481● Type 488 is scheduled for April 2007

14

234

3

HyTight Assembly

1

2

3

4

LWN 473.01 9

Clean Service Safety Relief ValvesLow dead space

Low dead space

The dead space ratio is defined by ratioof the length of the inlet (L) to the dia-meter of the inlet pipe (D). The clean-ability is improved as this ratio isreduced.

Types 481, 483 and 488 are improvedsolutions for safety valves with Tri-Clamp® connections, and have L / Dratios less than 1.5 and 2.0 (Type 488).The requirements of ASME BPE 2002Part SD - 3.11.1 (L / D < 2.0) and FDA 21CFR Part 177.2600 (L / D < 1.5) are ful-filled with these designs.

For some applications especially in thepharmaceutical industry the require-ments are even higher. The solution forthese particularly high purity require-ments is Type 484 or Type 485 withspecial connections to the vessel orthe piping, providing L / D ratios as lowas 0.3.

Dead space Type 483, L / D ~ 1.5



LWN 473.01

Clean Service Safety Relief ValvesSurface Quality

Series 48X

10

Surface Quality

Type Standard surface qualityproduct contact inlet

Ra, max. < 30 μinchRa, Average < 25 μinch

SFV3Type 481, 483, 488

Ra < 20 μinch is available on request, as well as electropolishing of the inside

and outside of the valves

Surface qualities of

Ra, max. < 25 μinch, electropolishedRa, Average < 20 μinch, electropolished

SFV6Type 484, 485

Cleanability dependent on surface roughness

Below Ra 10 μinch bacteria or particles“stick” to the surface due to adhesiveeffects.

Bacteria Bacteria

Bacteria

An optimized cleanability is reachedwith a surface roughness between Ra 10 μinch and Ra 45 μinch.

Above 45 μinch the bacteria and parti-cles can “hide” in the corrugations orniches.

Diagram depicting remainingcontamination after a definedcleaning procedure.

below Ra 10 μinch

above Ra 45 μinch

The surface quality, especially areas incontact with product, greatly influen-ces the cleanability of the safety valve.

The ASME BPE-2002, -a- 2003, -a- 2004(Bioprocessing Equipment) states forcleanability:SD-3.1.1: ● All surfaces shall be cleanable.● Surface imperfections (e.g., crevices,

gouges, abvious pits, etc.) shall beeliminated whenever feasible.

To ensure that ASME BPE-2002,-a- 2003, -a- 2004 requirements arefulfilled, no castings are used in theLESER Clean Service series.High surface quality is achieved bymachining most valve bodies and allinternal parts from high quality barmaterial.

Outer surface· No. 5 Outside surface of

body and bonnet· This surface has no contact to the product,

but a shiny surface is expected

Shielded surface· No. 6 · Surface never in contact with the product

because it is shielded by the bellows

LWN 473.01

Clean Service Safety Relief ValvesLESER Surface Definition

11

· Surface permanently in contact with the product

· Surface not permanently in contact with theproduct

· During blow off surface is wetted with the product

· This product cannot flow back to the process, if the outlet is not connected with the production process.

Product contact surface· No. 1 Inlet area· No. 2 Bottom side of disc

Surface definition acc. to ASME BPE 2002Description

· Design acc. to Part SD· Surface finish in compliance table SF-5· Different surface designation level

acc. to table SF-6 is available

Blow off surface· No. 3 Inside surface of

outlet area· No. 4 Welding seam

· Surface finish preponderant in compliance table SF-5

· Weldings are not grinded· Surface designation level acc. to

LESER specification

· ASME BPE is not applicable· Design acc. to Part SD· Surface finish preponderant in compliance

table SF-5· Weldings are not grinded

· ASME BPE is not applicable

LESER Surface DefinitionLESER Clean Service Safety Valves

3

6

2

1

4

5

LWN 473.01

Clean Service Safety Relief Valves Surface Definition

Series 48X

12

Anomaly or Indication

Table SF-5 Acceptance criteria for interior surface finishes of valve bodies

Acceptance Criteria

Cluster of pits No more than 4 pits per each 1/2 in. x 1/2 in. inspection window.The cumulative total of all relevant pits shall not exceed 0.040 in.

Demarcation

Grit linesNicks

Pits

PorosityScratchesSurface racksSurface inclusionsSurface residualsSurface roughness (Ra)Weld slag

If < 5 % of the total area when visually inspected and Ra max. is met

If Ra max. is metDents None accepted

If depth < 0.010 in.

If diameter < 0.020 in. and bottom is shiny. Pits < 0.003 in. diameter are irrelevant and acceptable

If diameter < 0.010 in. and bottom is shinyIf length < 0.25 in., depth < 0.003 in., and Ra max. is met

None acceptedIf Ra max. is met and there is no liquid penetrant indication

None accepted, visual inspectionSee table SF-6None accepted

Surface designation

SFV1

Ra, Average1

Mechanically Polished

[μinch]

15

[μm]

0.375

Ra, max.

[μinch]

20

[μm]

0.500

SFV2

SFV3

20

25

0.500

0.625

25

30

0.625

0.750

Table SF-6 Ra Readings for valves

Surface designation

SFV4

Ra, Average1

Mechanically Polished and Electropolished

[μinch]

10

[μm]

0.250

Ra, max.

[μinch]

15

[μm]

0.375

SFV5

SFV6

15

20

0.375

0.500

20

25

0.500

0.625

General note: All Ra readings are taken across the lay, wherever possible.Note: 1 The average Ra is derived from four readings taken at different locations.

Other Ra readings are available if agreed upon between vendor and owner / user. No single reading exceeding Ra, max.

Surface DefinitionAccording to ASME BPE 2002, -a- 2003, -a- 2004

LWN 473.01

Clean Service Safety Relief Valves LESER Surface Grade (LSG)

13

Mechanically Polished

LESER Surface Grade (LSG)The LESER Surface Grade (LSG) based on the requirements of ASME BPE as well as theEuropean Hygienic Pipes Standard DIN 11866.

LSG

M1

Ra, Average Ra, max.

10 0.250 0.37515

[μinch] [μm] [μm][μinch]

ASME BPESurface

designation

–

M2 15 0.375 0.50020SFV1

M3 20 0.500 0.62525SFV2

M4 25 0.625 0.75030SFV3

M5 50 1.250 1.50060–

M6 100 2.500 3.000120–

Mechanically Polished and Electropolished

LSG

ME1

Ra, Average Ra, max.

10 0.250 0.37515

[μinch] [μm] [μm][μinch]

ASME BPESurface

designation

SFV4

ME2 15 0.375 0.50020SFV5

ME3 20 0.500 0.62525SFV6

ME4 25 0.625 0.75030–

ME5 50 1.250 1.50060–

ME6 100 2.500 3.000120–

Please refer to individual catalog sections related to the valve types for available LESER Surface Grade.LSG M1, M5, M6, ME4, ME5 and ME6 fulfill requirements of DIN 11866. If the customer specifies only one Ra value then LESER takes it as Ra Average.

O-ring disc

Material

LWN 473.01

Clean Service Safety Relief Valves Soft Seal Disc

Series 48X

14

Applications

The series 48X is equipped with a softseal disc for● superior tightness● maintained tightness at operating

pressures close to the set pressure

Type 488 is equipped with a metal discas a standard. Availability of theHyTight Assembly is scheduled forApril 2007.


● minimized leakage and product lossfor cost effective operation

● large selection of soft seal materialsfor a wide range of applications

● simple replacement of soft seal forreduced maintenance cost

For temperature limits and medium re-sistance refer to the soft seal selectiontable.

Materials – subassembly Item 7

7.2

7.1

7.47.1

7.2

7.57.2

7.5

7.1

7.4

Type 481O-ring disc233 – 986 psig

Type 481 Vulcanized soft seal disc1.5 – 232 psig

Type 483, 484, 485, 4882

HyTight Assembly

Type 483, 484, 485, 4882Type 481

Item Part Name

7.1 Disc 316L1 316L 316L

7.2 Lifting aid 316L 316L 316L

7.4 O-ring – Refer to table soft seal selection

7.5 Nut 3161 – 316L

HyTight AssemblyVulcanized soft seal disc

Soft Seal Disc

Note: 1 Vulcanized elastomer material refer to table soft seal selection2 Type 488: Available as of April 2007

LWN 473.01

Clean Service Safety Relief Valves Soft Seal Selection

15

Soft Seal Selection

Abbre-vationASTM1418

DesignationTrade name

Code-letter1

OptionCode

[°F] [°F]Application2

CR Neoprene®

(Chloroprene) K J21 -40 212 Paraffin oil, silicone oil and grease, water and waterbased solvents, refrigerants, ozone

NBR Buna - N®

(Nitrile-Butadiene) N J30 -13 230 Hydraulic oil, vegetable and animal grease and oil

EPDMFDA

Buna - EP®

(Ethylene-Propylene -Diene)

D J22 -49 302Hot water and superheated steam up to 302°F, several organic and inorganic acids, silicone oil and grease, FDA compliant

FPM(FKM)

Viton®

(Fluorocarbon) L J23 -4 356

High temperature service (no superheated steam), mineral oil and grease, silicone oil and grease, vege-table and animal grease and oil, ozone, FDA compliantcompound available on request

FFKM-FDA

Kalrez®, ISOLAST®

Other Please contact LESER LLC

C

X

J20 32

[°C]

-40

-25

-45

-20

0 482

[°C]

100

110

150

180

250 Nearly all chemicals, standard compound is theFDA compliant Kalrez® 6230 or ISOLAST® J9515

Soft Seal Selection

Notes: 1 The code letters will be stamped on the disc.2 Pressure and temperature service must be considered in any case.

Chemical resistance depends on O-ring manufacturer information.LESER cannot provide any warranty.

O-r

ing

and

vul

cani

zed

so

ft s

eal

TmaxTmin

Buna-N® DuPontViton® DuPontNeoprene® DuPont

DuPontKalrez®

BayerBuna EP®

Busak +ShambanISOLAST®

Registered Trademarks Company

Standard material for all elastomers isEPDM, FDA compliant. The table belowshows available options for the soft seal(o-ring as well as vulcanized soft seal).

LWN 473.01

Clean Service Safety Relief Valves Lift Indicator

Series 48X

16

Lift indicators are a useful device forautomation. They are used to monitoroperating status.To detect lifting, LESER provides twodesigns incorporating a proximity switch:one with the proximity switch in the liftingdevice and the other with the proximityswitch in the bonnet (see drawingsbelow).The lift indicator will indicate a valve lift ofmore than 0.04 inch (1mm) due to over-pressure or operation of the lifting device.

LESER provides DC proximity switchestype “N” using two-wire technology.These intrinsically safe proximity swit-ches can be used in explosion hazardarea zone 0.

Other types of proximity switches maybe used. If a technical specification issupplied along with the type of con-nection thread LESER can verify com-patibility.

Lift indicator provided by LESER:● Pepperl + Fuchs NJ 2 – 12GK – N

Option Code J93● Power supply / operation range:

5 – 25 V DC● Connection thread: M12 x 1

Lift Indicator

Adaptor for lift indicator placed in:BonnetOption code J38

Packed lever H4Option code J39

Pneumatic lifting device H8Option code J40

Type 483, 484, 485 Orifice: all Type 488 Orifice: 0.644

Type 488 Orifice: 1.667 – 10.304 Type 488 Orifice: 1.667 – 10.304

time

sign

al

valve opens

min. 0.04 in.(1mm)

low

high

Operation Chart

Closed positionThe lift indicator is positionedin front of the spindle cap orcontrol sleeve when the safetyvalve is closed.

Open positionWhen the safety valve opens or is lift-ed (in both cases at least 0.04 in.[1mm]) the lift indicator changes itssignal. The signal also changes if thelift indicator unintendedly becomesloosened or unscrewed (fail safe).

LWN 473.01

Clean Service Safety Relief Valves Caps and Levers Overview

17

Caps and Levers Overview

Pneumatic lifting device H8 Single piston

Pneumatic lifting device H8 Double piston

Cap H2 Packed lifting knob H4 Packed lever H4

Type

481

CapH2

Packed lifting knob H4

Packed lever H4

Pneumatic liftingdevice H8

size 0 size 0 size 0–

Orifice[inch2]

0.122

483

484

485

488

size 0 size 0 size 0–0.206size 1 size 1 size 1–0.761size 0 size 0 size 0–0.206size 1 size 1 size 1–0.761size 0 size 0 size 0–size 1 size 1 size 1–

0.2060.761

size 1 size 1 size 1–0.644size 2size 2size 2size 3size 3

–––––

size 2size 2size 2size 3size 3

size 2size 2size 2

size 3, boltedsize 3, bolted

1.6672.5764.3836.66610.304

LWN 473.01

Clean Service Safety Relief Valves Cap H2, Packed lifting knob H4

Series 48X

18

16

14

19

13

24

25

23

22

12

2

1

24

25

23

2

Cap H2, Packed lifting knob H4

Cap H2 Packed lifting knob H4

Item

Materials

12

Component Cap H2


Lever coverCap

316L–

316L316L

316SS316SS

Stainless SteelViton®

316LPlastic316SS

–316L

–––––––

Plastic316SS

2 Knob12 Spindle cap13 Bolt14 Support ring16 Pin19 O-ring22 Stopper23 Seal24 Seal wire

316L316L25 Sealing nose


Closed

Open

The packed lifting knob has a uniquedesign setting it apart from conven-tional lifting levers. The packed liftingknob is twisted to open the safetyvalve, and remains in the open posi-tion until it is twisted closed. This feature allows steam or cleaningsolution to flush through the valveduring a cleaning cycle.

316LStainless steel

LWN 473.01

Clean Service Safety Relief Valves Packed lever H4, size II and size III

19

Packed lever H4

Packed lever H4, size III

1.19

1.11

1.20

1.21

1.18

1.10

1.7

1.8

1.6

12

14

13

23

3

25

1.2

1.1

24

1.9

1.4

26

27

1.6

1.4

1.8

1.9

12

13

14

24

25

23

3

1

Packed lever H4, size II

Item Materials

11.1

Component

Size IIISize IILever cover

–316L316L316L316L

316SS316SS316SSViton®

316LPTFE 15% glass

Viton®

–Lever cover - baseLever cover - top1.2 –

1.4 Shaft / bolt1.6 Lever1.7 Washer1.8 Hex. nut1.91.10 Shaft / bearing1.11 Bushing1.18 O-ring

Materials

Viton®1.19 O-ring1.20 Hex. screw1.21 Retaining ring

Viton®3 –316Ti3 Spacer

O-ring–

316L12 Spindle cap316SS13 Pin316SS14 Retaining clipPlastic23 Seal316SS24 Seal wire316L25 Sealing nose316L26 Union nutPTFE27 Washer

––

O-ring

LWN 473.01

Clean Service Safety Relief Valves Pneumatic lifting device H8, single piston

Series 48X

20

13

14

18

19

18

25

21

3

23

2

5

24

6

4

12

22

Lifting device H8Single piston

Item

2

Component Materials

Cap 316L3 O-ring Viton®

316L316L

Stainless steel316L

316SS316SSViton®

Viton®

4 Piston5 Piston guide6 Spring12 Spindle cap13 Pin14 Retaining clip18 O-ring19 O-ring

31621 Clamp

Plastic22 Female elbowfitting

Plastic23 Seal316SS24 Seal wire316L25 Sealing nose


Pneumatic lifting device H8Single piston

The pneumatic lifting device H8 allowsCleaning In Place (CIP) or Sterilizing InPlace (SIP).Applying air pressure to the liftingdevice will lift the spindle, which willopen the valve and allow steam orcleaning solution to flush through thevalve.

LWN 473.01

Clean Service Safety Relief Valves Pneumatic lifting device H8, double piston

21

13

14

18

19

18

19

18

18

24

25

23

2

5

6

4

6

4

12

15

22

14

13

21

22

21

3

1

Lifting device H8Double piston

Item

2

Component Materials

Cap 316L1 Cylinder 316L

3 O-ring Viton®

316L316L

Stainless steel316L

316SS316SSViton®

Viton®

4 Piston5 Piston guide6 Spring

12 Spindle cap13 Pin14 Retaining clip18 O-ring19 O-ring

31621 Clamp

Plastic22 Female elbowfitting

Plastic23 Seal316SS24 Seal wire316L25 Sealing nose


Pneumatic lifting device H8Double piston

Depending on the set pressure and lift-ing pressure (air supply) a double pistonlifting device may be required insteadof a single piston . See H8 selection charts for applicablevalve types.

LWN 473.01

Clean Service Safety Relief ValvesFAQ’s

Series 48X

22

FAQ’s

What is the standard surface quality for all LESER clean service safety valves?The surface quality for LESER clean service safety valves depends on the valve type. Nevertheless, each Clean Servicesafety valve LESER offers complies with ASME BPE 2002, -a- 2003, -a- 2004.

Does LESER fulfil ASME BPE 2002, -a- 2003, -a- 2004 requirements?ASME BPE 2002 is a general guideline for design and construction of Clean Service Equipment. LESER follows this guide-line as well as DIN EN 1672-2 and fulfils the requirements of both.

What is FDA?FDA (Food and Drug Administration) is a federal science-based law enforcement agency in the USA mandated to protectpublic health and safety.

What does 21 CFR Part 177.2600 mean?This is a title of the Federal Food, Drug and Cosmetic Act (1938)21: title 21, Food and DrugsCFR: Code of Federal Regulations177.: Part “polymers”2600: section “elastomers”

Are the elastomer materials in a compliance with FDA?LESER certifies that the standard EPDM fitted directly into product contact parts of the Clean Service safety valves are inaccordance with the rules of the “Food and Drug Administration” (FDA) 21 CFR Part 177.2600: “Rubber articles intendedfor repeated use”. LESER is also able to supply FFKM (Kalrez®) and FKM (Viton®) in FDA compliant grades.

What does USP mean?United States Phamacopeia. Their vision is:“USP’s vision is to be a leader in promoting the public health by creating a unique knowledge base – consisting of qualitystandards and information on proper use – for medicines and related products and practices. USP will ensure that peoplethroughout the world have access to this knowledge base.”

What is the USP-NF?The United States Pharmacopeia – National Formulary (USP – NF) is a book of public pharmacopeial standards. It containsstandards for medicines, dosage forms, drug substances, excipients, medical devices, and dietary supplements. The cur-rent edition is USP29 – NF24

What is USP Class 6?In the USP “Chapter <88> Biological reactivity tests, in vivo” you can find a definition of test procedures for elastomers,which come in contact with humans and animals. There are 6 grades of test; the highest one is Class 6.Futhermore the “Chapter <87> Biological reactivity tests, in vitro” is relevant, which discribe tests about the cytotoxicity.

Which elastomer materials acc. to USP Class VI are available at LESER?LESER is able to supply EPDM, FKM (e.g. Viton®) and FFKM (e.g. ISOLAST® or Kalrez®) with manufacturer’s certificateacc. USP <87> cytotoxicity test and USP <88> Class VI.

What is 3A?3-A Sanitary Standards, Inc. (3-A SSI) is a non-profit association representing equipment manufacturers, processors, reg-ulatory sanitarians and other public health professionals. Through many decades of cooperation, these groups have estab-lished a comprehensive inventory of 3-A Sanitary Standards and 3-A Accepted Practices now known around the world fordairy and food processing equipment and systems.

What does EHEDG mean?EHEDG is the shortform for “European Hygienic Engineering & Design Group”The EHEDG provides guidance on the hygienic engineering aspects of manufacturing of safe and wholesome food.

What is EHEDG test?The EHEDG defines test methods for definition and examination of cleanability. The test methods are discribed in the following “Docs”: “Doc 2, A method for assessing the in-place cleanability of food processing equipment” or “Doc 15, A method for the assessment of in-place cleanability of moderately-sized food processing equipment“.The test can be performed at certified laboraties and is documented in an EHEDG Test certificate.Up to now there is only a low request for EHEDG tested safety valves. Nevertheless, LESER is able to perform these testsat any time.

LWN 473.01


23

Contents

● Applications 24

● Features and Benefits 24

● Materials 25

● How to Order 26

● Article Numbers 28

● Available Connections 28

● Dimensions and Weights 29

● Pressure Temperature Ratings 29

● Available Options 30

● Selection Chart H8 31

● Spare Parts 32

● Surface Quality 33

● Capacities 34

● Approvals and

Coefficient of discharge 36

Type 481

LWN 473.01

Clean Service Safety Relief Valves Applications · Features and Benefits

Type 481

24

Aseptic

Cap

acity

Standard SuperiorType481

Type484

Type483

Type485

Type488

Applications

Designed for small capacity, Type 481offers protection for installations inwhich Clean Service properties arerequired only at the valve inlet, e.g. pro-tection of gas systems for the bottlingof beverages.


● one orifice with different Tri-Clamp®

sizes at the inlet available for easyadaption to the plant

● one orifice with different FNPTthreads or Tri-Clamp® sizes at theoutlet available for easy adaption tothe plant

● product contact materials stainlesssteel (316L) for high corrosionresistance

● aseptic connections available forindividual hygienic adaption to plant

● product contact surfaces anddesign acc. to ASME BPE for easycleanability

LWN 473.01

Clean Service Safety Relief Valves Materials Type 481

25

40

18

19

16

54

2

12

17

57

7

1

Materials

Item Part Name

Type 4814Stainless steel

Set pressure1.5 – 232 psig 233 – 986 psig

1 Base / Inlet body SA 479 316L2 Outlet body SA 479 316L

7Disc with soft seal 316LSoft seal design Vulcanized

Standard soft seal EPDM-FDA12 Spindle 316L

16 Upper spring plate 316L17 Lower spring plate 316L

18 Adjusting screw with bushing

316LPTFE

54 Spring Stainless steel

40 Cap 316L19 Lock nut 316L

SA 479 316LSA 479 316L

316LO-ring

EPDM-FDA316L

316L–

316LPTFE

Stainless steel57 Pin 316L –

316L316L

Type 481Set pressure 1.5 – 232 psigSealing vulcanized soft seal

Type 481Set pressure 233 – 986 psigSealing soft seal, O-ring

7

1

LWN 473.01

Clean Service Safety Relief ValvesHow to Order – Numbering System

Type 481

26

4814.7692 100 psig

Article No. Set Pressure Connections

3Please state unit (in gauge)!

Please do not exceed pressure rangementioned in the spring charts.

Article Number Set Pressure Connections

481 4 769 2

1 2

1

2

3

4

3 4

.

How to Order Type 481Numbering System

Type 481 – Small capacity and aseptic requirementsonly at the inlet

Material Code4 – Body material 316L

Valve CodeIdentifies pressure range, orificeand design of soft seal 769: pset = 1.5 – 232 psig

Vulcanized soft seal

768: pset = 233 – 986 psigO-ring disc

Code for lifting device2 – screwed cap H24 – packed lever H48 – pneumatic lifting device H8

3Standard connection:Inlet: 1” Tri-Clamp® unless otherwise

stated.Outlet: FNPT

2211

LWN 473.01

Clean Service Safety Relief ValvesHow to Order – Numbering System

27

1.1

Options Documentation Code and Medium

J20 H01 L34

44 5 66Please select requested documentation:

Material test reportDIN EN 10204-3.1

Part Option code

Inlet body H01

Outlet body L34

Cap/ lever cover L31

Disc L23

Certificate of surface quality N04


1 1

1 2

.

1

2

Code 1. ASME Section VIII2. CE / VdTUEV3. ASME Section VIII

+ CE / VdTUEV

Medium .1 Gases.2 Liquids.3 Steam.0 Steam/Gases/Liquids

(valid only for CE / VdTUEV)

5Type 481 Option

Code

• Disc: O-ring or vulcanized soft seal

Standard: EPDM FDA compliant J22

Option: FFKM FDA compliant J20

FPM J23

NBR J30

CR J21

• Test Gag H2 J70(Available for cap H2 only)

• Pneumatic lifting device H8 J41Double piston design

Available surface options see page 33.

LWN 473.01

Clean Service Safety Relief Valves How to Order · Article Numbers · Available Connections

Type 481

28

da di

Type 481Tri-Clamp®

Type 481Tri-Clamp® outlet

Type 481Outlet FNPT

How to Order

Note: For other Clean Service connections than Tri-Clamps® please ask LESER LLC.

Article Numbers

Orifice[inch2] Inlet

Tri-Clamp®

0.122 1”Vulcanized soft seal

O-ring disc1/2”

4814.7692 4814.7694 4814.76984814.7682 4814.7684 4814.7688

OutletFNPT

CapH2


Pneumatic liftingdevice H8

Sealing

Standard connections Body Material SA 479 316L

Available Connections

Orifice[inch2]

Size

0.122

3/4”

1”

OptionCode

I75 + I78

Standard(L96 + I79)

di

[inch] [mm]da

[inch] [mm]

5/8

57/64

15.7

22.6

34

50.5

Size

1/2”

3/4”1”

OptionCode

Standard(V70)

V77V71

Size

1”

OptionCode

L97 + A79

di

[inch] [mm] [inch] [mm]da

57/64 22.6 163/64 50.5111/32

163/64

InletTri-Clamp® (CO)

OutletTri-Clamp® (CO)Female NPT

LWN 473.01

Clean Service Safety Relief Valves Dimensions and Weights · Pressure Temperature Ratings

29

Note: 1 The temperature is limited by the soft seal material. Refer to table “Soft seal selection” on page 15.

Note: Inlet and outlet connection can be selected independently from each other!

Note: Inlet and outlet connection can be selected independently from each other!

Pressure Temperature Ratings Type 481 – US Units

Orifice[inch2]

0.122

Set Pressure Range

[psig]Body Material

max. max.

Temperature Range1

[°F]

1.5

Sealing


min.Design Material

Design Material

316L + 302232

233O-ring discEPDM

986

min.

- 49

Dimensions and Weights Type 481 – US Units

Orifice[inch2]

0.122

Inlet

Type ofconnectionTri-Clamp®

–3/4”1”

Size

Outlet Height Weight

Hmax. m

[inch] [lbs]

Type ofconnection

FNPT

1/2”3/4”1”

Size

Center to Face

a

–1 37/64

1 3/16

[inch]

Center to Face

b

1 3/16

1 7/16

1 7/16

[inch]

Center to Face

b

––

2 9/16

7 3/8 3.1

[inch]


––1”

Size


Pressure Temperature Ratings Type 481 – Metric Units

Orifice[mm2]

78.5

Set Pressure Range

[bar]Body Material

max. max.

Temperature Range1

[°C]

0.1

Sealing


min.

316L + 15016

16O-ring discEPDM

68

min.

- 45

Dimensions and Weights Type 481 – Metric Units

Orifice[mm2]

78.5

Inlet


–3/4”1”

Size

Outlet Height Weight

Hmax. m

[mm] [kg]

Type ofconnection

FNPT

1/2”3/4”1”

Size

Center to Face

a

–4030

[mm]

Center to Face

b

303737

[mm]

Center to Face

b

––

65187 1.4

[mm]


––1”

Size

LWN 473.01

Clean Service Safety Relief Valves Accessories and Options · Overview

Type 481

30

Available OptionsType 481

Gastight cap H2 Pneumatic lifting device H8H8 double piston J41

Pneumatic lifting device H8H8 single piston

Gastight lifting device H4Packed lifting knob H4

Vulcanized soft sealJ22: EPDM "D" (FDA) standardJ20: FFKM "C" (FDA)J21: CR "K"J23: FPM "L"J30: NBR "N"

O-ring discJ22: EPDM "D" (FDA) standardJ20: FFKM "C" (FDA)J21: CR "K"J23: FPM "L"J30: NBR "N"

Test gagJ70 (H2)

Tri-Clamp® connection outletL97 + A79: 1”

Female NPT outletV70: 1/2”V77: 3/4”V71: 1”

LWN 473.01

Clean Service Safety Relief Valves Accessories and Options · Selection Chart H8

31

Selection Chart H8Type 481

0 50 100 150 200 232

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145

0

1

2

3

4

5

6

7

8

9

10

Valve Set Pressure [ psig ]

Lift

ing

Pre

ssur

e [

psi

g ]

Lift

ing

Pre

ssur

e [

bar

]

Valve Set Pressure [ bar ]

Single piston design

Double piston design

Consult factory

Selection Chart lifting device H8, size 0. Orifice 0.122

Depending on the set pressure and lifting pressure (air supply) a double piston lifting device may be required instead of a single piston. The chart below determines the required lifting device.

LWN 473.01

Clean Service Safety Relief Valves Spare Parts

Type 481

32

Spare Parts

Disc with vulcanized soft seal (Item 7)

Orifice[inch2]

0.122

DiscMaterial

316L

NBRNitrile

FFKMKalrez®

N C

232

max.

Set Pressure Range[psig]

1.5

min.

EPDM FDAEthylene

200.9049.9041

D

FPM (FKM)Viton®

200.9049.9071 200.9049.9081 200.9049.9091

L

CRNeoprene®

200.9049.9051

K

Inlet Body (Item 1)

Orifice[inch2]

0.122

DiscMaterial

316L232

986

max.


1.5

233

min.

Connection

Tri-Clamp®

Part-No.

-

-136.4649.9265

136.4649.9265

Size

3/4”

3/4”1”

1”

Disc – soft seal with O-ring (Item 7)

Orifice[inch2]

0.122

DiscMaterial

316L

NBRNitrile

FFKMKalrez®

N C

986

max.


233

min.

EPDM FDAEthylene

200.8349.9741

D

FPM (FKM)Viton®

200.8349.9771 200.8349.9781 200.8349.9791

L

CRNeoprene®

200.8349.9751

K

O-ring – soft seal (Item 7.3)

Orifice[inch2]

0.122

O-ring size

ARP-no.

ARP 1117/16 x 3/32

NBRNitrile

FFKMKalrez®

N C

986

max.


233

min.

EPDM FDAEthylene

502.0107.2641

D

FPM (FKM)Viton®

502.0107.2671 502.0107.2681 502.0107.2691

L

CRNeoprene®

502.0107.2651

K

LWN 473.01

Clean Service Safety Relief Valves Surface Quality

33

Surface Quality

Type 481

Type of surface

Product contact surface

M4(25 μinch)1 ME4

(25 μinch)ME3

(20 μinch)

2

2

Elastomer surface

M4(25 μinch)

ME4(25 μinch)

ME3(20 μinch)

Blow off surface

Outer surface

Area

Inlet

Bottom side of disc:

- Soft seal design: Vulcanized

- Soft seal design: O-ring

Inside surface of outlet area

Outside surface of inlet and outlet body

M6(100 μinch)3 ME6

(100 μinch)ME6

(100 μinch)

M6(100 μinch)5 ME6

(100 μinch)ME6

(100 μinch)

Standard

No.

Improved Special

LESER Surface Grade LSG1

(Ra, Average)

If required surface deviates from standard specify No. and required LESER Surface Grade.Note: 1For Ra max. and metric values please see page 13.

2

1

3

5

LWN 473.01

Clean Service Safety Relief Valves Capacity US Units · STEAM · AIR · WATER

Type 481

34

STEAMASME Section VIII[lb/ h]

AIRASME Section VIII[S.C.F.M.]

WATERASME Section VIII[US - G.P.M.]

Capacities for saturated steam accord-ing to ASME Section VIII (UV) arebased on a pressure equal to the setpressure plus 10 % overpressure. Capacities at 30 psig and bellow arebased on 3 psig overpressure. The temperature is limited by the softseal material.Above EPDM range please use the softseal selection table on page 15.

Capacities for air according to ASMESection VIII (UV) are based on a pres-sure equal to the set pressure plus10 % overpressure at 60 °F.Capacities at 30 psig and below arebased on 3 psig overpressure.

Capacities for water according to ASMESection VIII (UV) are based on a pres-sure equal to the set pressure plus10 % overpressure at 68 °F.Capacities at 30 psig and below arebased on 3 psig overpressure.

Type 481

Set pressure [psig]

Capacities US UnitsOrifice [inch2]

0.122 Set pressure

[psig]


0.122 Set pressure

[psig]


0.122 15 8320 9630 12140 14950 17760 205

max. Temp. for EPDM soft seal

70 23380 26190 289

100 317120 373140 429160 485180 541200 597220 653230 681

15 3020 3430 4340 5350 6360 7370 8380 9390 103100 113120 133140 153160 173180 193200 213220 233240 253260 273280 293300 313320 333340 353360 373380 393400 413500 513600 613700 713800 813900 913

15 6.3220 7.1530 8.5640 9.8950 11.160 12.170 13.180 14.090 14.8100 15.6120 17.1140 18.5160 19.8180 21.0200 22.1220 23.2240 24.2260 25.2280 26.2300 27.1320 28.0340 28.8360 29.7380 30.5400 31.3500 35.0600 38.3700 41.4800 44.2900 46.9

LWN 473.01

Clean Service Safety Relief Valves Capacity Metric Units · STEAM · AIR · WATER

35

Capacities for saturated steam accord-ing to ASME Section VIII (UV) are basedon a pressure equal to the set pressureplus 10 % overpressure.Capacities at 2.07 bar and below arebased on 0.207 bar overpressure. The temperature is limited by the softseal material.Above EPDM range please use the softseal selection table on page 15.

Capacities for air according to ASMESection VIII (UV) are based on a pres-sure equal to the set pressure plus10 % overpressure at 16 °C.Capacities at 2.07 bar and below arebased on 0.207 bar overpressure.

Capacities for water according to ASMESection VIII (UV) are based on a pres-sure equal to the set pressure plus10 % overpressure at 20 °C.Capacities at 2.07 bar and below arebased on 0.207 bar overpressure.

Type 481

Set pressure [bar]

Capacities Metric UnitsOrifice [mm2]

78.5Set pressure

[bar]

Capacities Metric UnitsOrifice [mm2] Set pressure

[bar]


78.5 78.51 372 543 724 91


5 1096 1287 1468 1649 18310 20112 23814 27516 312

1 502 723 974 1215 1466 1717 1958 2209 24410 26912 31814 36816 41718 46620 51622 56524 61426 66328 71330 76232 81134 86136 91038 95940 100850 125560 1501

1 1.422 1.913 2.344 2.705 3.026 3.317 3.588 3.829 4.0610 4.2812 4.6814 5.0616 5.4118 5.7420 6.0522 6.3424 6.6226 6.8928 7.1530 7.4032 7.6534 7.8836 8.1138 8.3340 8.5550 9.5660 10.5

STEAMASME Section VIII[kg / h]

AIRASME Section VIII[mn

3/ h]

WATERASME Section VIII[103 kg/ h]

LWN 473.01

Clean Service Safety Relief Valves Approvals · Rated slope

Type 481

36

Approvals Type 481

Country Code

UnitedStates

Canada

ASME Sec. VIII

CRN

Type

481

481

Fluid

S / G

S / G / L

L

Approval No.

M37190

OG0772.9C

M372020.4060.322

Refer to ASME Sec. VIII

0.4510.358

Coefficient of Dischargerated

Kderated

KD

Country Code

0.122

Europe PED 97/23/EC(CE-marking)

Germany AD 2000-Merkblatt A2

Fluid

S / GL

S / GL

Approval No. Orifice

072020111Z0008/0/21-1 0.122

TUEV-SV 980

481

481

0.40Kdr

0.33

0.40

αW

0.33

Type Certified Coefficient of Discharge

Others

China: CSBQTSRussia: DIN GOSTPoland: UDTHungary: TMB

Notes: Acc. to ASME Sec. VIII the certified coefficient of discharge K is calculated by K = 0.9 * KD

For sizing acc. to ASME Sec. VIII K, must be used in the sizing equations.

0.122

Orifice

0.122

Rated slopeWithin the capacity certification accord-ing to ASME Sec. VIII, the coefficientsof discharge for Type 481 are estab-lished as “rated slope values” insteadof K values.

Rated slope values can be convertedinto K values. The table above showsthe converted K values. The originalrated slope values are listed below.

Fluid Rated slope Type 481

S 2.55 lb / hr / PSIA

G 0.904 SCFM / PSIA

L 1.49 GPM √PSID

LWN 473.01

Clean Service Safety Relief Valves Contents

37

Type 483

Contents

● Applications 38


● Materials 39

● How to Order 40







● Spare Parts 46


● Capacities 48

● Approvals and


LWN 473.01


Type 483

38

Applications

Designed for small to medium capacity,Type 483 has optimized Clean Serviceproperties for applications requiring Tri-Clamp® connections. Type 483 is applicable in all Clean Ser-vice areas (e.g., bottle filling machines,fermenters).


● two valve sizes 1” and 1 1/2” with Tri-Clamp®

● connections as required● set pressure range 1.5 – 232 psig● HyTight Assembly● cleanable inlet and outlet● dead space ratio l / d ~1.5● standard product-wetted materials

316L (1.4435)

Starting from 15 psig the safety valve iscertified acc. ASME Code Sec. VII, Div. 1

Aseptic

Cap

acity


Type484

Type483

Type485

Type488

LWN 473.01


39

Materials

Item Part Name Type 4834Stainless steel

1 Body SA 479 316L

7Disc with soft seal1

316L

12 Spindle 316L

8 Guide 316L9 Bonnet 316L

16 / 17 Spring plate 316L14 Split ring 316L


316LPTFE


70 Bellows EPDM-FDA68 Clamp 31661 Ball 31660 O-ring EPDM-FDA

40 Cap H2 316L21 Lift stop 316L19 Lock nut 316L

40

19

18

16

54

8

9

12

14

17

60

21

68

70

61

7

1

Note: 1standard material: EPDM-FDA – Ethylene / Propyleneoptional: CR – Neoprene

NBR – NitrileFPM – FluorocarbonFFKM – Kalrez®

LWN 473.01

Clean Service Safety Relief Valves How to Order – Numbering System

Type 483

40

4834.7718 100 psig





483 4 771 8

1 2

1

2

3

4

3 4

.


Type 483 – Small to medium capacity and high aseptic requirements


Valve CodeIdentifies valve size and bodymaterial. Refer to page 42 andfollowing.


3Standard connection is Tri-Clamp®

unless otherwise stated.

2211

LWN 473.01


41

1.1


J38 J93 H01 L30



Part Option code

Body H01

Bonnet L30


Disc L23



1 1

1 2

.

1

2


+ CE / VdTUEV



5Type 483 Option

Code

• O-ring disc EPDM* = J22standard

CR J21

NBR J30

FPM J23

FFKM* J20

• Adaptor for lift indicator

Bonnet J38

• Lift indicator J93

• Double piston H8 J41

• Bellows FFKM S70


* FDA compliant

LWN 473.01


Type 483

42

da di

Type 483Tri-Clamp®

How to Order



Article Numbers

Orifice[inch2] Inlet

Tri-Clamp®

0.2060.761

1”11/2”

11/2”2”

4834.7702 4834.7704 4834.77084834.7712 4834.7714 4834.7718

OutletTri-Clamp®

CapH2

Packed lifting knobH4

Pneumatic lifting deviceH8

Standard connections Body Material SA 479 316L


Orifice[inch2]

Size

0.206

0.761

11/2”1”

2”11/2”

Option Code

Standard (L96+I79)L96 + I80

Standard (L96+I80)L96 + I81

di

[inch] [mm]da

[inch] [mm]57/64

113/32

129/32

113/32

22.6

35.635.6

48.6

Size

11/2”

2”

Option Code

Standard (L97 + A80)

Standard (L97 + A81)

di

[inch] [mm] [inch] [mm]da

113/32 35.6 163/64 50.5

129/32 48.6 233/64 64.0

163/64

233/64

50.5

163/64 50.564.0

InletTri-Clamp® (CO)

OutletTri-Clamp® (CO)

Clean Service Safety Relief Valves Dimensions and Weights · Pressure Temperature Ratings

LWN 473.01 43


Orifice[inch2] Tri-Clamp®

Size

Center to Face a

[inch]

Tri-Clamp®

Size

Center to Face b

[inch]

Hmax.

[inch]

m

[lbs]

0.2061”

1 1/2”1 1/2”1 5/32 2 3/64 8 1/8 3.5

0.7611 1/2”

2”2”1 23/32 2 23/64

11 5/8

11 29/328.2

OutletInlet Height Weight


Orifice[mm2] Tri-Clamp®

Size

Center to Face a

[mm]

Tri-Clamp®

Size

Center to Face b

[mm]

Hmax.

[mm]

m

[kg]

1331”

1 1/2”1 1/2”29 52 206 1.6

4911 1/2”

2”2”44 60

295303

3.7

OutletInlet Height Weight



Orifice[inch2]

0.206

Set Pressure Range

[psig]Body

Material

max. max.

Temperature Range1

[°F]

4.4

Sealing

HyTightAssembly

min.Design Material

316L + 302232EPDM

min.

- 490.761 1.5



Orifice[mm2]

133

Set Pressure Range

[bar]Body

Material

max. max.

Temperature Range1

[°C]

0.3

Sealing

HyTightAssembly

min.Design Material

316L + 15016EPDM

min.

- 45491 0.1

LWN 473.01


Type 483

44


Gastight cap H2H2

Pneumatic lifting device H8H8 double piston J41



O-ring-discJ22: EPDM "D" (FDA) standardJ20: FFKM "C" (FDA)J21: CR "K"J23: FPM "L"J30: NBR "N"

Bellows FFKMS70

Test gagJ70 (H2)

Multiple possibilities of asepticconnections e.g.:- dairy industry coupling- sterile screw coupling- small flange- clamp

Lift indicatorJ38 + J93

LWN 473.01


45

0 50 100 150 200 232

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

0

1

2

3

4

5

6

7

8

9

10


Lift

ing

Pre

ssur

e [

psi

g ]

Lift

ing

Pre

ssur

e [

bar

]


0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145



Consult factory

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


0 50 100 150 200 232Valve Set Pressure [ psig ]

0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar

]Single piston design


Consult factory

Lift

ing

Pre

ssur

e [

psi

g ]

Selection chart lifting device H8, size I. Orifice 0.761

Selection chart lifting device H8, size 0. Orifice 0.206



LWN 473.01


Type 483

46

Spare Parts

Discs – Soft seal, disc material: 316L (Item 7)1

Orifice[inch2]

0.2060.761

EPDM FDAEthylene

CRNeoprene

FPM (FKM)Viton®

NBRNitril

FFKMKalrez®

CD200.8169.9741200.2569.9741

200.8169.9791200.2569.9791

Assembly tool forAseptic O-ring disc

not required445.0139.0000

N200.8169.9781200.2569.9781

L200.8169.9771200.2569.9771

K200.8169.9751200.2569.9751

O-ring (Item 7.3)

Orifice[inch2]

0.206

0.761

EPDM FDAEthylene

CRNeoprene

FPM (FKM)Viton®

NBRNitril

FFKMKalrez®

CD

502.0123.2641

O-ring sizeARP-no.

1/2 x 3/32

ARP 112

1 x 3/32

ARP 120

502.0123.2691

N

502.0123.2681

L

502.0123.2671

K

502.0123.2651

502.0250.2641 502.0250.2691502.0250.2681502.0250.2671502.0250.2651

O-ring body / guide (Item 60)Orifice[inch2]

0.2060.761

EPDM EthyleneD

FFKM Kalrez®

CO-ring size

46 x 3 mm60 x 3 mm

502.0460.3041 502.0460.3021502.0600.3041 502.0600.3021

Bellows (Item 70)Orifice[inch2]

0.2060.761

EPDM Ethylene D

224.2349.9000224.2449.9000

FFKM Kalrez®

C

224.1929.9000–

Pin – Material 316SS (Item 57)Orifice[inch2]

0.2060.761

Part-No.Ø mm

3 480.0405.0000

Ball – Material 316 (Item 61)Orifice[inch2]

0.2060.761

Part-No.Ø mm

6 510.0104.0000

Split rings / Pin – Material 316L (Item 14)Orifice[inch2]

0.2060.761

Part-No.Spindle Ø mm

812

480.0405.0000251.0149.0000

Note: 1electropolished ≤ Ra 25 μinch (0.625 μm)

LWN 473.01


47

Surface Quality

2

5

6

1

3

4

Type 483

Type of surface


M4(25 μinch)1 M4

(25 μinch)ME2

(15 μinch)

M4(25 μinch)

M4(25 μinch)

ME2(15 μinch)2

Blow off surface

Outer surface

Area

Inlet

Bottom side of disc



M5(50 μinch)3 ME5

(50 μinch)ME4

(25 μinch)

M6(100 μinch)4 ME6

(100 μinch)ME6

(100 μinch)

M5(50 μinch)5 ME5

(50 μinch)ME4

(25 μinch)

Shielded surface Surface never in contact with the productbecause it is shielded by the bellows No definition6

Standard

No.

Improved Special


(Ra, Average)


LWN 473.01


Type 483

48




Capacities for saturated steam accord-ing to ASME Section VIII (UV) arebased on a pressure equal to the setpressure plus 10 % overpressure. Capacities at 30 psig and bellow arebased on 3 psig overpressure. The temperature is limited by the softseal material.Above EPDM range please use the softseal selection table on page 15.



Type 483

Set pressure [psig]


0.206 0.761 0.206 0.761 0.206 0.761Set pressure

[psig]

Capacities US UnitsOrifice [inch2] Set pressure

[psig]


15 64 16320 74 18830 94 23840 115 29250 137 34760 159 40270 180 45780 202 51290 224 566100 245 621120 289 731140 332 841160 375 950180 419 1060200 462 1170220 505 1279230 527 1334

15 12.6 31.620 14.2 35.730 17.0 42.840 19.7 49.450 22.0 55.360 24.1 60.570 26.0 65.480 27.8 69.990 29.5 74.1100 31.1 78.1120 34.0 85.6140 36.8 92.5160 39.3 98.8180 41.7 105200 43.9 111220 46.1 116230 47.1 118

15 180 45720 208 52730 263 66740 324 82150 385 97460 445 1128

max. Temp for EPDM soft seal

70 506 128280 567 143690 627 1590

100 688 1744120 810 2052140 931 2359160 1052 2667180 1174 2975200 1295 3283220 1417 3590230 1478 3744

LWN 473.01


49

133 491 133 491 133 491

Capacities for saturated steam accord-ing to ASME Section VIII (UV) are basedon a pressure equal to the set pressureplus 10 % overpressure.Capacities at 2.07 bar and below arebased on 0.207 bar overpressure.The temperature is limited by the softseal material.Above EPDM range please use the softseal selection table on page 15.



Type 483

Set pressure [bar]


[bar]


[bar]




3/ h]


1 108 2722 156 3953 209 5304 263 6655 316 8006 369 9357 423 10708 476 12069 530 134110 583 147612 690 174614 797 201716 904 2287

1 2.81 7.082 3.81 9.573 4.65 11.74 5.37 13.55 6.01 15.16 6.58 16.67 7.11 17.98 7.60 19.19 8.06 20.310 8.50 21.412 9.31 23.414 10.1 25.316 10.7 27.0

1 81 2042 117 2963 157 3974 197 498


5 237 5996 277 7017 316 8028 356 9039 396 100510 436 110612 516 130814 596 151116 676 1714

LWN 473.01


Type 483

50

Country Code

UnitedStates ASME Sec. VIII

Canada CRN

rated K

deratedKD

Type

483

483

Fluid

S / GL

S / GL

S / G / L


M37145M37156M37167M37178

OG0772.9C

0.206

0.761

0.5210.3790.3570.258


0.5790.4210.3970.287

Coefficient of Discharge

Approvals Type 483

Country Code

0.206

0.761



Fluid

S / GL

S / GL

S / GL

S / GL


0.206

0.761

TUEV-SV 1047

483

483

0.60Kdr

0.400.380.26


Others


072020111Z0008/0/20

0.400.60

αW

0.260.38

Rated slopeWithin the capacity certification accord-ing to ASME Sec. VIII, the coefficientsof discharge for Type 483 are estab-lished as “rated slope values” instead ofK values.


Fluid

Rated slope Type 483

Orifice0.206

Orifice0.761


G 1.96 SCFM / PSIA

L 2.96 GPM √PSID

13.97 lb / hr / PSIA

4.96 SCFM / PSIA

7.46 GPM √PSID

Notes: Acc. to ASME Sec. VIII the certified coefficient of discharge K is calculated by K = 0.9 * KD

For sizing acc. to ASME Sec. VIII K, must be used in the sizing equations.

LWN 473.01


51

Type 488

Contents

● Applications 52


● Materials 53

● How to Order 54







● Spare Parts 63


● Capacities 67

● Approvals and


LWN 473.01


Type 488

52

Aseptic

Cap

acity


Type484

Type483

Type485

Type488

Applications

Designed for high capacity; Type 488provides Clean Service properties forapplications requiring larger capacities.Type 488 is applicable in large plants,breweries and the beverage industry.


● six valve sizes 1” – 4”● set pressure range 3 – 232 psig ● Standard till March 2007:

metal disc● Standard as of April 2007:

HyTight Assembly● cleanable inlet and outlet● connections as required● standard product-wetted materials

316L (1.4404)

Starting from 15 psig (liquids) or 20psig (steam / gas) the safety valve iscertified acc. to ASME Code Sec. VIII,Div. 1

LWN 473.01

Clean Service Safety Relief ValvesMaterials Type 488

53

40

18

19

16

54

8

9

12

17

14

68

70

57

60

7

5

1

Materials


1 Body SA 479 316L7 Disc 316L

12 Spindle 316L




316LPTFE



40 Cap H2 316L19 Lock nut 316L

Design 2002 HyTight Assembly

LWN 473.01


Type 488

54

4884.8058 100 psig





488 4 805 8

1 2

1

2

3

4

3 4

.


Type 488 – High capacity andmedium aseptic requirements




3Standard connection inlet is Tri-Clamp® unless otherwise stated.

If ANSI Flanges are required pleaseselect· L94 for inlet· L95 for outlet

2211

LWN 473.01


55

1.1


J40 J93 H01 L30



Part Option code

Body H01

Bonnet L30


Disc L23



1 1

1 2

.

1

2


+ CE / VdTUEV



5Type 488 Option

Code

• Disc: O-ring EPDM* J22

CR J21

NBR J30

FPM J23

FFKM* J20

• Adaptor for lift indicator

Bonnet J38

H4 J39

H8 J40




* FDA compliant

LWN 473.01


Type 488

56

How to Order


LESER’s Tri-Clamp® connections provided with the Type 488 are designed according to ISO 2852 and are compatible with Tri-Clover Tri-Clamp®

connections for the most common sizes. Tri-Clamp® connection size designations are LESER designations. For detailed dimensions and selection refer to the above charts.


Orifice[inch2]

Size

Size

0.6441.6672.5764.3836.66610.304

2”11/2”

3”21/2”

4”31/2”

Option Code

Standard (L96)

Option Code

L94

di

[inch] [mm]

di

[inch] [mm]

da

[inch] [mm]

da

[inch] [mm]

113/32

23/8

27/8

327/32

411/32

129/32

35.6

60.348.6

72.997.6

110.3

163/64

233/64

33/64

337/64

411/16

51/8

50.564

77.591

119130

Tri-Clamp® (CO) Standard

Inlet

InletOrifice[inch2]

0.6441.6672.5764.3836.66610.304

11/2”1”

21/2”2”

4”3”

11/2

11/32

219/32

131/32

315/16

33/16

3826

6650

10081

541/4

71/64

563/64

971/2

127108

178152

228.5190.5

219/32

11/2

315/16

33/16

63/8

459/64

6638

10081

162125

71/64

5

971/2

1063/64

10

178127

228.5190.5

279254

Flanges ASME 150# (FA)

3”2”

4”31/2”

6”5”

21/2”11/2”

4”3”

6”5”

Option Code

Standard (L97)

L95

di

[inch] [mm]

di

[inch] [mm]

da

[inch] [mm]

da

[inch] [mm]

129/32

327/32

411/32

511/32

627/64

27/8

48.6

97.672.9

110.3135.7163.1

233/64

337/64

411/16

51/8

67/64

713/64

6491119130155183

Outlet

Outlet

Size

Option CodeSize

Article Numbers

Orifice[inch2]

Tri-Clamp®

0.6441.6672.5764.3836.66610.304

11/2”2”

21/2”3”

31/2”4”

1”11/2”

2”21/2”

3”4”

4884.8842 4884.8844 4884.88484884.88524884.88624884.88724884.88824884.8892

4884.88544884.88644884.88744884.88844884.8894

4884.88584884.88684884.88784884.88884884.8898

FlangesASME 150#

2”3”

31/2”4”5”6”

5”6”

Tri-Clamp®

11/2”21/2”

3”4”

FlangesASME 150#

Connections

Inlet Outlet

Body Material SA 479 316L

4884.8022 4884.8024 4884.80284884.80424884.80524884.80624884.80724884.8082

HyTight Assembly

4884.80444884.80544884.80644884.80744884.8084

Design 2002

4884.80484884.80584884.80684884.80784884.8088

H2 H4 H8 H2 H4 H8

H2 = Cap H2, H4 = Packed lever H4, H8 = Pneumatic lifting device H8

LWN 473.01

Clean Service Safety Relief Valves Dimensions and Weights

57

Orifice[inch2]


Inlet

[inch]

HeightHmax.

[inch] [lbs]

Weightm

5 3/16

6 5/8

0.6441.667

6.666

2.5764.383

10.304

6 7/8

6 57/64

7 1/16

7 5/16

13 5/64

20 13/32

21 1/32

21 3/4

25 13/64

26 59/64

20444858

104123

1 1/2”2 1/2”

3”4”5”

6”

Flanges ASME B16.5 #150

[inch]3 9/16

4 25/64

4 13/16

5 3/16

66 13/16

1”1 1/2”

2”2 1/2”

3”4”

OutletInlet

[inch]4 25/64

5 49/64

5 49/64

6 1/32

77 7/64

2”3”

3 1/2”4”5”

6”

ConnectionSize

Center to Face

b

Tri-Clamp®

[inch]2 15/16

3 39/64

3 57/64

4 17/64

4 7/8

5 55/64

1 1/2”2”

2 1/2”3”

3 1/2”4”

ConnectionSize

Center to Face

a

ConnectionSize

Center to Face

b

ConnectionSize

Center to Face

a

Outlet

Orifice[mm2]


Inlet

[mm]

HeightHmax.

[mm] [kg]

Weightm

131169

4161075

4301

16622827

6648

174175179186

332518.5534

552.5640684

920

21.726.54756

1 1/2”2 1/2”

3”4”5”

6”

Flanges ASME B16.5 #150

[mm]91

111.5122

131.5152

172.5

1”1 1/2”

2”2 1/2”

3”4”

OutletInlet

[mm]111.5146.5146.5153178

180.5

2”3”

3 1/2”4”5”

6”

ConnectionSize

Center to Face

b

Tri-Clamp®

[mm]74.591.599

108.5124149

1 1/2”2”

2 1/2”3”

3 1/2”4”

ConnectionSize

Center to Face

a

ConnectionSize

Center to Face

b

ConnectionSize

Center to Face

a

Outlet

da di

Type 488Flanged connection FAFA

Type 488Tri-Clamp® connection COCO

Clamp

0.12

1.52

LWN 473.01

Clean Service Safety Relief Valves Pressure Temperature Ratings

Type 488

58

Notes: 1 The temperature is limited by the soft seal material. Refer to table “Soft seal selection” on page 15.2 For Steam, Air/Gas starting from 20 psig the safety valve is certified acc. to ASME Code Sec. VIII, Div. 1.

For Liquids starting from 15 psig the safety valve is certified acc. to ASME Code Sec. VIII, Div. 1.

Pressure Temperature Ratings Type 488 HyTight – US Units

EPDM

Set Pressure Range (S / G / L)[psig]Orifice

[inch2]max. min.

max.

Temperature Range acc. to ASME

[°F]1

316L

1.52

32

Body Material

HyTight Assembly

0.644

+302

232232217150150118

min.

-49

1.6672.5764.3836.66610.304

Sealing

Notes: 1 The temperature is limited by the soft seal material. Refer to table “Soft seal selection” on page 15.2 For Steam, Air/Gas starting from 1.38 bar the safety valve is certified acc. to ASME Code Sec. VIII, Div. 1.

For Liquides starting from 1 bar the safety valve is certified acc. to ASME Code Sec. VIII, Div. 1.

Pressure Temperature Ratings Type 488 HyTight – Metric UnitsSet Pressure Range (S / G / L)

[bar]Orifice[mm2]

max. min. max.


[°C]1

316L

0.12

0.22

Body Material

HyTight Assembly

416

+150

161615

10.3410.348.2

min.

-45EPDM

10751662282743016648

Sealing

Pressure Temperature Ratings Type 488 Design 2002 – US Units

316L

Set Pressure Range (S / G / L)[psig]Orifice

[inch2]max. min.

max.


[°F]1

316L 32

Body Material

Metal to Metal

0.644

+302

232232150150150118

min.

-49

1.6672.5764.3836.66610.304

Sealing

Pressure Temperature Ratings Type 488 Design 2002 – Metric Units

316L

Set Pressure Range (S / G / L)[bar]Orifice

[mm2]max. min.

max.


[°C]1

316L 0.22

Body Material

Metal to Metal

416

+150

1616

10.3410.3410.348.2

min.

-45

10751662282743016648

Sealing

LWN 473.01


59


Gastight cap H2H2



Gastight lifting device H4H4

HyTight AssemblyJ22: EPDM "D" (FDA)J20: FFKM "C" (FDA)J21: CR "K"J23: FPM "L"J30: NBR "N"

Test gagJ70 (H2)

Test gagJ69 (H4) Orifice 1.667 – 10.304

Lift indicator H8Orifice 1.667 – 10.304J40 + J93

Lift indicator H4Orifice 1.667 – 10.304J39 + J93

Lift indicator bonnetOrifice 0.644J38 + J93

Multiple possibilities of asepticconnections e.g.:- dairy industry coupling- sterile screw coupling- small flange- clamp

LWN 473.01


Type 488

60



0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar

]



Consult factory

Lift

ing

Pre

ssur

e [

psi

g ]

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar

]




Consult factory

Lift

ing

Pre

ssur

e [

psi

g ]

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145

Selection chart lifting device H8, size II. Orifice 1.667 inch2

Selection chart lifting device H8, size I. Orifice 0.644 inch2

LWN 473.01


61

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar

]

Lift

ing

Pre

ssur

e [

psi

g ] Single piston

designDouble piston

design

Consult factory

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145



Lift

ing

Pre

ssur

e [

psi

g ]



Consult factory

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145

0 50 100 150 200 232

0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar

]

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



LWN 473.01


Type 488

62

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar

]

Lift

ing

Pre

ssur

e [

psi

g ]

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145



Consult factory

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar

]

Lift

ing

Pre

ssur

e [

psi

g ]



Consult factory

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145

Selection chart lifting device H8, size III. Orifice 10.304 inch2

Selection chart lifting device H8, size III. Orifice 6.666 inch2


LWN 473.01


63

Discs – Metal to metal seat (Item 7)Orifice[inch2]

0.6441.6672.5764.3836.66610.304

Disc material316L

225.4049.9000210.0949.9000210.1049.9000

210.1949.9000210.2049.9000

210.2349.9000

Bellows – Material EPDM Ethylene D (Item 70)Orifice[inch2]

0.6441.6672.5764.3836.66610.304

D

224.0479.0000521.0307.0000521.0307.0000521.0107.0000521.0408.0000521.0408.0000

Spare Parts


0.6441.6672.5764.3836.66610.304

Part-No.Ø mm

344

55

5

480.0205.0000480.0605.0000480.0605.0000480.0905.0000480.1005.0000480.1005.0000

O-ring body / guide – Material EPDM Ethylene D (Item 60)Orifice[inch2]

0.6441.6672.5764.3836.66610.304

EPDM FDA EthyleneDO-ring size

60 x 3 mm85 x 4 mm85 x 4 mm

113 x 4 mm138 x 4 mm158 x 5 mm

502.0600.3041502.0850.4041502.0850.4041502.1130.4041502.1380.4041502.1580.5041

LWN 473.01


Type 488

64


0.6441.6672.5764.3836.66610.304

Part-No.Ø mm

699

1212

15

510.0104.0000510.0204.0000510.0204.0000510.0304.0000510.0304.0000510.0404.0000

Split rings – Material 316L (Item 14)Orifice[inch2]

0.6441.6672.5764.3836.66610.304


121616

1620

20

251.0149.0000251.0249.0000251.0249.0000251.0249.0000251.0349.0000251.0349.0000

LWN 473.01

Clean Service Safety Relief Valves Spare Parts for HyTight Assembly

65

Discs – Soft seal HyTight Assembly, disc material: 316L (Item 7)1

Orifice[inch2]

0.6441.6672.5764.3836.66610.304

EPDM FDAEthylene

CRNeoprene

FPM (FKM)Viton®

FFKMKalrez®

CD205.3549.9041205.3649.9041205.3749.9041205.3849.9041205.3949.9041205.4049.9041

205.3549.9091205.3649.9091205.3749.9091205.3849.9091205.3949.9091205.4049.9091

L205.3549.9071205.3649.9071205.3749.9071205.3849.9071205.3949.9071205.4049.9071

K205.3549.9051205.3649.9051205.3749.9051205.3849.9051205.3949.9051205.4049.9051

O-ring for HyTight Assembly (Item 7.3)1

Orifice[inch2]

0.644

1.667

2.576

4.383

6.666

10.304

EPDM FDAEthylene

CRNeoprene

FPM (FKM)Viton®

FFKMKalrez®

CD

502.0249.3541

O-ring sizeARP-no.

31/32 x 1/8

ARP 214

1 19/32 x 1/8

ARP 223

1 31/32 x 1/8

ARP 226

2 19/32 x 7/32

ARP 334

3 7/32 x 7/32

ARP 339

4 3/32 x 7/32

ARP 346

502.0249.3591

L

502.0249.3571

K

502.0249.3551

502.0408.3541 502.0408.3591502.0408.3571502.0408.3551

502.0503.3541 502.0503.3591502.0503.3571502.0503.3551

502.0660.5341 502.0660.5391502.0660.5371502.0660.5351

502.0819.5341 502.0819.5391502.0819.5371502.0819.5351

502.1041.5341 502.1041.5391502.1041.5371502.1041.5351

Spare Parts for HyTight Assembly

Note: 1HyTight assembly is available from April 2007.

LWN 473.01


Type 488

66

Surface Quality

5

6

2

1

3

4

Type 488

Type of surface


M4(25 μinch)1 ME4

(25 μinch)ME2

(15 μinch)

M4(25 μinch)

ME4(25 μinch)

ME2(15 μinch)2

Blow off surface

Outer surface

Area

Inlet

Bottom side of disc


Welding seam


M5(50 μinch)3 ME5

(50 μinch)ME4

(25 μinch)

M6(100 μinch)4 ME6

(100 μinch)ME6

(100 μinch)

M5(50 μinch)5 ME5

(50 μinch)ME4

(25 μinch)


Standard

No.

Improved Special


(Ra, Average)


LWN 473.01

Clean Service Safety Relief Valves Capacity US Units / Metric Units · STEAM

67



Capacities for saturated steam according to ASME SectionVIII (UV) are based on a pressure equal to the set pressureplus 10 % overpressure. Capacities at 30 psig and belloware based on 3 psig overpressure.The temperature is limited by the soft seal material.Above EPDM range please use the soft seal selection tableon page 15.

Note: 1For Steam starting from 20 psig the safety valve is certified acc. toASME Code Sec. VIII, Div. 1.

Type 488

Set pressure [psig]


0.644 1.667 2.576 4.383 6.666 10.304

Capacities for saturated steam according to ASME SectionVIII (UV) are based on a pressure equal to the set pressureplus 10 % overpressure. Capacities at 2.07 bar and beloware based on 0.207 bar overpressure.The temperature is limited by the soft seal material.Above EPDM range please use the soft seal selection tableon page 15.

Note: 1For Steam starting from 1.5 bar the safety valve is certified acc. toASME Code Sec. VIII, Div. 1.

Set pressure [bar]


416 1075 1662 2827 4301 664811 334 865 1338 2276 3462 53502 485 1256 1941 3302 5023 77643 678 1756 2714 4617 7022 108544 852 2204 3406 5795 8815 13624


5 1025 2652 4099 6973 10607 163956 1198 3100 4791 8151 12399 191657 1371 3548 5484 9330 14191 219358 1544 3996 6176 10508 15984 247059 1717 4444 6869 11686 17776 2747610 1890 4892 7561 12864 19568 3024612 2237 5788 8947 15221 23153 3578614 2583 6684 10332 17577 26737 4132716 2929 7580 11717 19934 30322 46867

151 748 1937 2994 5093 7747 1197420 863 2233 3452 5873 8933 1380830 1092 2826 4369 7432 11306 1747540 1403 3630 5610 9545 14519 2244250 1666 4311 6663 11335 17242 2665060 1929 4991 7715 13125 19965 30859


70 2192 5672 8767 14915 22688 3506780 2455 6353 9819 16705 25411 3927690 2718 7033 10871 18495 28133 43485

100 2981 7714 11923 20285 30856 47693120 3507 9075 14028 23865 36302 56110140 4033 10437 16132 27445 41748 64527160 4559 11798 18236 31026 47193 72944180 5085 13160 20340 34606 52639 81362200 5611 14521 22445 38186 58085 89779220 6137 15883 24549 41766 63530 98196230 6400 16563 25601 43556 66253 102404

LWN 473.01

Clean Service Safety Relief Valves Capacity US Units / Metric Units · AIR

Type 488

68

Capacities for air according to ASME Section VIII (UV) arebased on a pressure equal to the set pressure plus 10 %overpressure at 16 °C. Capacities at 2.07 bar and below arebased on 0.207 bar overpressure.

Note: 1For Air/Gas starting from 1.5 bar the safety valve is certified acc. toASME Code Sec. VIII, Div. 1.

Type 488



3/ h]

Capacities for air according to ASME Section VIII (UV) arebased on a pressure equal to the set pressure plus 10 %overpressure at 60 °F. Capacities at 30 psig and below arebased on 3 psig overpressure.

Note: 1For Air/Gas starting from 20 psig the safety valve is certified acc. toASME Code Sec. VIII, Div. 1.

Set pressure [psig]


0.644 1.667 2.576 4.383 6.666 10.304Set pressure

[bar]


416 1075 1662 2827 4301 6648151 267 690 1066 1814 2760 426620 307 796 1230 2092 3182 491930 389 1007 1556 2648 4027 622540 500 1293 1999 3401 5172 799450 593 1536 2373 4038 6142 949460 687 1778 2748 4676 7112 1099370 781 2021 3123 5314 8081 1249280 874 2264 3498 5951 9051 1399190 968 2506 3873 6589 10021 15490

100 1062 2749 4247 7227 10991 16990120 1249 3234 4997 8502 12931 19988140 1437 3719 5747 9778 14871 22986160 1624 4204 6496 11053 16810 25985180 1811 4689 7246 12329 18750 28983200 1999 5174 7995 13604 20690 31982220 2186 5659 8745 14879 22630 34980230 2280 5902 9120 15517 23600 36479

11 446 1155 1785 3037 4619 71402 648 1676 2590 4407 6703 103603 905 2343 3621 6161 9370 144844 1136 2941 4545 7734 11762 181815 1367 3539 5469 9306 14153 218786 1598 4137 6394 10879 16545 255747 1829 4736 7318 12451 18936 292718 2060 5334 8242 14023 21328 329689 2292 5932 9166 15596 23719 3666410 2523 6530 10090 17168 26111 4036112 2985 7726 11939 20313 30894 4775514 3447 8922 13787 23458 35677 5514816 3909 10118 15635 26603 40460 62541

LWN 473.01

Clean Service Safety Relief Valves Capacity US Units / Metric Units · WATER

69

0.644 1.667 2.576 4.383 6.666 10.304 416 1075 1662 2827 4301 6648

Capacities for water according to ASME Section VIII (UV) arebased on a pressure equal to the set pressure plus 10 %overpressure at 20 °C. Capacities at 2.07 bar and below arebased on 0.207 bar overpressure.

Type 488



Capacities for water according to ASME Section VIII (UV) arebased on a pressure equal to the set pressure plus 10 %overpressure at 68 °F. Capacities at 30 psig and below arebased on 3 psig overpressure.

Set pressure [psig]


[bar]


15 48.9 127 196 333 507 78320 55.3 143 221 376 573 88530 66.3 172 265 451 686 106040 76.5 198 306 521 792 122450 85.5 221 342 582 885 136960 93.7 243 375 638 970 149970 101 262 405 689 1048 161980 108 280 433 736 1120 173190 115 297 459 781 1188 1836100 121 313 484 823 1252 1936120 133 343 530 902 1372 2120140 143 371 573 974 1482 2290160 153 396 612 1041 1584 2448180 162 420 649 1105 1680 2597200 171 443 684 1164 1771 2737220 179 464 718 1221 1857 2871230 183 475 734 1249 1899 2935

1 11.0 28.4 43.8 74.6 113 1752 14.8 38.4 59.3 101 153 2373 18.1 46.9 72.5 123 188 2904 20.9 54.2 83.7 142 217 3355 23.4 60.5 93.6 159 242 3746 25.6 66.3 102 174 265 4107 27.7 71.6 111 188 286 4438 29.6 76.6 118 201 306 4739 31.4 81.2 126 214 325 50210 33.1 85.6 132 225 342 52912 36.2 93.8 145 247 375 58014 39.1 101 157 266 405 62616 41.8 108 167 285 433 669

LWN 473.01

Clean Service Safety Relief Valves Approvals · Orifice Areas and Orifice Diameters

Type 488

70

Approvals Type 488

Country Code

UnitedStates

Canada

ASME Sec. VIII

CRN

FluidType

488

S / G / L488

S / G

L


OG0772.9C

M37022 (20 to 232 psig)

M37033 (≥ 15 psig)

all0.721


0.801

0.472 0.524

Coefficient of Dischargerated

Kderated

KD

Note: Acc. to ASME Sec. VIII the rated coefficient of discharge K is calculated by K = 0.9 * KD

For sizing acc. to ASME Sec. VIII K must be used in the sizing equations.

Country Code

all

Europe PED 97/23(CE-marking)


Fluid

S / G

L

S / G

L


072020111Z0008/0/25 all

TUEV-SV 1047

488

488

0.70

0.45

0.70

0.45


Others


Kdr

αW

Orifice Areas and Orifice Diameters

Valve Size

11/2” x 2”

Sizing according to ASME Sec. VIII with ASME K

Tri-ClampActual Orifice Area Actual Orifice Diameter

A0 d0

[inch2] [mm2] [inch] [mm]0.644

2” x 3” 1.66721/2” x 31/2” 2.576

3” x 4” 4.38331/2” x 5” 6.666

4” x 6” 10.304

41610751662282743016648

0.9061.4571.8112.3622.9133.622

233746607492

LWN 473.01


71

Type 484

Contents

● Applications 72


● Materials 73

● How to Order 74






● Spare Parts 80


● Capacities 82

● Approvals and


LWN 473.01


Type 484

72

Applications

Designed for small to medium capacityType 484 meets the highest sanitaryrequirements for high purity applica-tions, e.g. fermentors. The designincorporates a dead space free vesselconnection, which is directly weldedinto the vessel wall and allows maxi-mum cleanability of the valve inlet.


● two valve sizes 1” and 1 1/2”● set pressure range 1.5 – 232 psig ● aseptic O-ring-disc with bellows● cleanable inlet and outlet● aseptic connections● standard product-wetted materials

316L (1.4435) stainless steel andelectropolished to Ra ≤ 25 μinch(0.625 μm)

● dead space ratio l / d ~ 0.3

Starting from 15 psig the safety valve iscertified acc. to ASME Code Sec. VIII,Div. 1

Type 484Installation: vessel, vessel connection, valve

Aseptic

Cap

acity


Type484

Type483

Type485

Type488

valve

vessel connection

vessel

LWN 473.01


73

40

18

16

19

54

8

9

12

14

17

60

68

21

70

61

56

92

67 487 1

Materials


1 Body SA 479 316L


316L

12 Spindle 316L




316LPTFE






Vessel connection Type 5034

48 Vessel connection SA 479 316L56 Nut 8M67 O-ring EPDM-FDA92 Srew B8M

LWN 473.01


Type 484

74

4844.7728 100 psig





484 4 772 8

1 2

1

2

3

4

3 4

.


Type 484 – Small to medium capacity and highest aseptic requirements




3Inlet:

Outlet: Standard outlet is butt-welded end.If another connection is required,state in writing, please.

2211Vessel connection

Article No.Vessel wallthickness

[inch]

5034.0980 ≤ 13/64

5034.0981 > 13/64

Vessel connection

Article No.Vessel wallthickness

[inch]

5034.0982 ≤ 13/64

5034.0983 > 13/64

Type 4844.773x

Type 4844.772x

LWN 473.01


75

1.1


J38 J93 H01 L30



Part Option code

Body H01

Bonnet L30


Disc L23



1 1

1 2

.

1

2


+ CE / VdTUEV



5Type 484 Option

Code

• O-ring disc EPDM* =standard J22

CR J21

NBR J30

FPM J23

FFKM* J20

• Adaptor for Bonnet J38

lift indicator





* FDA compliant

LWN 473.01

Clean Service Safety Relief Valves How to Order · Article Numbers · Vessel connection

Type 484

76

Type 5034Vessel connection

LD

D1

C1

C

Tube end

da di

Type 484Gastight Cap H2

How to Order

LD

D1

C1

C

Article Numbers Type 484

≤ 13/64

> 13/64

> 13/64

≤ 13/64

Outlet

Orifice[inch2] Cap

H2di da

Pneumaticlifting device

H8

Body Material SA479 316L

5034.09805034.09815034.09825034.0983

13/8

17/8

Article number [inch] [inch]

Vessel wall thickness [inch]

Size(Order code)

0.206 4844.7728

4844.7738

4844.7722

4844.7732

Packed lifting knob

H4

4844.7724

4844.7734

1”(A87)

11/2”(A87)0.761

11/2

2

Inlet

Vessel connection, order separately, please

Tube end ASME BPE

Valve Size

Type 5034 Vessel connection – Dimensions and Weights US Units

≤ 13/64

> 13/64

> 13/64

≤ 13/64

Orifice[inch2] C D

5034.09805034.09815034.09825034.0983

15/32

Article number

[inch]C1

[inch][inch] [inch]D1

[inch]L

[inch]m

[lbs]

Vessel wall thickness

Flange thickness Dimension Weight

0.2062.24.02.64.9

4 21/64

5

3 35/64

4 21/64

13/64

45/64

13/64

45/640.761

5 1/8

5 29/32

Vessel connection

Type 5034 Vessel connection – Dimensions and Weights Metric Units

≤ 5> 5

> 5≤ 5

Orifice[mm2] C D

5034.09805034.09815034.09825034.0983

12

Article number

[mm]C1

[mm][mm] [mm]D1

[mm]L

[mm]m

[kg]

Vessel wall thickness

Flange thickness Dimension Weight

1331.01.81.22.2

110

127

90

110

518518

491

130

150

Vessel connection

LWN 473.01

Clean Service Safety Relief ValvesDimensions and Weights · Pressure Temperature Ratings

77


Inlet

5034.09805034.09815034.09825034.0983

Orifice[inch2]

Outlet

Size

[inch]

Vessel connection

[inch]a

Center to Face Center to Faceb

HeightHmax.

[inch] [lbs]

Weightm

0.206

0.761

11/2”

2”

8 3/32 6.63 5/32

10 15/16 8.83 17/32

15/16

1 3/16


Inlet

5034.09805034.09815034.09825034.0983

Orifice[mm2]

Outlet

Size

[mm]

Vessel connection

[mm]a

Center to Face Center to Faceb

HeightHmax.

[mm] [kg]

Weightm

133

491

11/2”

2”

205.5 3.080

278 4.090

24

30



Orifice[mm2]

133

Set Pressure Range

[bar]Body

Material

max. max.

Temperature Range1

[°C]Sealing

HyTight Assembly

min.Design Material

316L + 15016EPDM

min.

- 45491

0.3

0.1



Orifice[inch2]

0.206

Set Pressure Range

[psig]Body

Material

max. max.

Temperature Range1

[°F]Sealing

HyTight Assembly

min.Design Material

316L + 302232EPDM

min.

- 490.761

4.4

1.5

LWN 473.01


Type 484

78


Gastight cap H2H2





Bellows FFKMS70

Test gagJ70 (H2)


Blind flange for pressure testPart No. 138.8849.9000 (NPS 1”)Part No. 138.8649.9000 (NPS 11/2”)

LWN 473.01


79



0 50 100 150 200 232

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

0

1

2

3

4

5

6

7

8

9

10


Lift

ing

Pre

ssur

e [

psi

g ]

Lift

ing

Pre

ssur

e [

bar

]


0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145



Consult factory

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar



Consult factory

Lift

ing

Pre

ssur

e [

psi

g ]


Selection chart lifting device H8, size 0. Orifice 0.206 inch2

LWN 473.01


Type 484

80

Spare Parts

Discs – Soft seal HyTight Assembly, disc material: 316L (Item 7)1

Orifice[inch2]

0.2060.761

EPDM FDAEthylene

CRNeoprene

FPM (FKM)Viton®

NBRNitril

FFKMKalrez®

CD200.8169.9741200.2569.9741

200.8169.9791200.2569.9791



N200.8169.9781200.2569.9781

L200.8169.9771200.2569.9771

K200.8169.9751200.2569.9751

O-ring (Item 7.3)

Orifice[inch2]

0.206

0.761

EPDM FDAEthylene

CRNeoprene

FPM (FKM)Viton®

NBRNitril

FFKMKalrez®

CD

502.0123.2641

O-ring sizeARP-no.

1/2 x 3/32

ARP 112

1 x 3/32

ARP 120

502.0123.2691

N

502.0123.2681

L

502.0123.2671

K

502.0123.2651

502.0250.2641 502.0250.2691502.0250.2681502.0250.2671502.0250.2651


0.2060.761

EPDM EthyleneD

FFKM Kalrez®

CO-ring size

46 x 3 mm60 x 3 mm

502.0460.3041 502.0460.3021502.0600.3041 502.0600.3021


0.2060.761

EPDM Ethylene D

224.2349.9000224.2449.9000

FFKM Kalrez®

C

224.1929.9000–


0.2060.761

Part-No.Ø mm

3 480.0405.0000


0.2060.761

Part-No.Ø mm

6 510.0104.0000


0.2060.761


812

480.0405.0000251.0149.0000


LWN 473.01


81

Surface Quality

7

4

3

2

5

6

8

1

Type 484

Type of surface


ME4(25 μinch)1 ME2

(15 μinch)ME1

(10 μinch)

ME4(25 μinch)

ME2(15 μinch)

ME1(10 μinch)2

Blow off surface

Outer surface

Area

Inlet

Bottom side of disc


Welding seam


ME4(25 μinch)3 ME3

(20 μinch)ME2

(15 μinch)

ME6(100 μinch)4 ME5

(50 μinch)ME4

(25 μinch)

ME5(50 μinch)5 ME4

(25 μinch)ME4

(25 μinch)


Standard

No.

Improved Special


(Ra, Average)

Caution: Electropolishing of the vessel connection is not reasonable before welding.If required surface deviates from standard specify No. and required LESER Surface Grade.Note: 1For Ra max. and metric values please see page 13.

Type 5034 Vessel connection

Type of surface


M4(25 μinch)7 M2

(15 μinch)M1

(10 μinch)

Outer surface

Area

Vessel side

Outside surface M5(50 μinch)8 M4

(25 μinch)M4

(25 μinch)

Standard

No.

Improved Special


(Ra, Average)

LWN 473.01


Type 484

82

Type 484




Capacities for saturated steam accord-ing to ASME Section VIII (UV) arebased on a pressure equal to the setpressure plus 10 % overpressure. Capacities at 30 psig and bellow arebased on 3 psig overpressure.The temperature is limited by the softseal material.Above EPDM range please use the softseal selection table on page 15.



Set pressure [psig]


0.206 0.761 0.206 0.761 0.206 0.761Set pressure

[psig]


[psig]


15 64 16320 74 18830 94 23840 115 29250 137 34760 159 40270 180 45780 202 51290 224 566100 245 621120 289 731140 332 841160 375 950180 419 1060200 462 1170220 505 1279230 527 1334

15 12.6 31.620 14.2 35.730 17.0 42.840 19.7 49.450 22.0 55.360 24.1 60.570 26.0 65.480 27.8 69.990 29.5 74.1100 31.1 78.1120 34.0 85.6140 36.8 92.5160 39.3 98.8180 41.7 105200 43.9 111220 46.1 116230 47.1 118

15 180 45720 208 52730 263 66740 324 82150 385 97460 445 1128


70 506 128280 567 143690 627 1590

100 688 1744120 810 2052140 931 2359160 1052 2667180 1174 2975200 1295 3283220 1417 3590230 1478 3744

LWN 473.01


83

Type 484

133 491 133 491 133 491

Capacities for saturated steam accord-ing to ASME Section VIII (UV) are basedon a pressure equal to the set pressureplus 10 % overpressure.Capacities at 2.07 bar (30 psig) andbelow are based on 0.207 bar (3 psig)overpressure.The temperature is limited by the softseal material.Above EPDM range please use the softseal selection table on page 15.



Set pressure [bar]


[bar]


[bar]




3/ h]


1 108 2722 156 3953 209 5304 263 6655 316 8006 369 9357 423 10708 476 12069 530 134110 583 147612 690 174614 797 201716 904 2287

1 2.81 7.082 3.81 9.573 4.65 11.74 5.37 13.55 6.01 15.16 6.58 16.67 7.11 17.98 7.60 19.19 8.06 20.310 8.50 21.412 9.31 23.414 10.1 25.316 10.7 27.0

1 81 2042 117 2963 157 3974 197 498


5 237 5996 277 7017 316 8028 356 9039 396 100510 436 110612 516 130814 596 151116 676 1714

LWN 473.01


Type 484

84

Country Code

UnitedStates ASME Sec. VIII

Canada CRN

rated K

deratedKD

Type

484

484

Fluid

S / GL

S / GL

S / G / L


M37145M37156M37167M37178

OG0772.9C

0.206

0.761

0.5210.3790.3570.258


0.5790.4210.3970.287


Approvals Type 484

Country Code

0.206

0.761



Fluid

S / GL

S / GL

S / GL

S / GL


0.206

0.761

TUEV-SV 1047

484

484

0.60Kdr

0.400.380.26


Others


072020111Z0008/0/20

0.400.60

αW

0.260.38

Rated slopeWithin the capacity certification accord-ing to ASME Sec. VIII the coefficientsof discharge for Type 484 are estab-lished as “rated slope values” instead ofK values.


Fluid


Orifice0.206

Orifice0.761


G 1.96 SCFM / PSIA

L 2.96 GPM √PSID


4.96 SCFM / PSIA

7.46 GPM √PSID

LWN 473.01


85

Contents

● Applications 86


● Materials 87

● How to Order 88






● Spare Parts 94


● Capacities 96

● Approvals and


Type 485

LWN 473.01


Type 485

86

Aseptic

Cap

acity


Type484

Type483

Type485

Type488

Type 5034Installation: Integrated pipework connection, safety valve

Type 5034If the outlet has the same direction like the pipe, the Tri-Clamp is not possible.

Applications

Designed for small to medium capacity;Type 485 meets the highest sanitaryrequirements for high purity applica-tions, e.g. fermentors. The designincorporates a dead space free pipeconnection, which is directly weldedinto the pipework and allows maximumcleanability of the valve inlet. Type 485 can be used in applicationswhere a direct vessel connection usedby the Type 484 is not possible, e.g.glass vessels.


● two valve sizes 1” and 11/2”● set pressure range 1.5 – 232 psig ● aseptic O-ring-disc with bellows● cleanable inlet and outlet● aseptic connections● standard product-wetted materials

316L (1.4435) stainless steel andelectropolished to Ra ≤ 25 μinch(0.625 μm)

● dead space ratio l /d ~ 0.3Starting from 15 psig the safety valve iscertified acc. ASME Code Sec. VIII, Div. 1

Safety valve

pipework connection

pipe

LWN 473.01


87

Integrated pipework connection Type 5034

48 Pipe connection SA 479 316L67 O-ring EPDM-FDA92 Screw B8M

40

18

16

19

9

12

17

14

54

68

8

70

7

60

21

61

48

92

67

1

Materials


1 Body SA 479 316L


316L

12 Spindle 316L




316LPTFE






LWN 473.01


Type 485

88

4854.7748 100 psig





485 4 774 8

1 2

1

2

3

4

3 4

.


Type 485 – Low to medium capacity and highest aseptic requirements




3Inlet:

2211

Outlet:Standard outlet is Tri-Clamp®.If another connection is required,state in writing, please.

Integrated pipework connection

Article No. ISO 2037Size

5034.0994 1”


Article No. ISO 2037Size

5034.0995 1 1/2”5034.0996 2”

Type 4854.775x

Type 4854.774x

LWN 473.01


89

1.1


J38 J93 H01 L30



Part Option code

Body H01

Bonnet L30


Disc L23



1 1

1 2

.

1

2


+ CE / VdTUEV



5Type 485 Option

Code

• O-ring disc EPDM* =standard J22

CR J21

NBR J30

FPM J23

FFKM* J20

• Adaptor for Bonnet J38

lift indicator





* FDA compliant

LWN 473.01

Clean Service Safety Relief ValvesHow to Order · Article Numbers · Pipework connection

Type 485

90

How to Order

b

ca


Type 5034Integrated pipework connection

Article Numbers Type 485

1”

2”11/2”

Outlet

Orifice[inch2] Cap

H2

Butt-weldend

ISO 2037

Pneumaticlifting device

H8

Body Material SA479 316L

5034.0994

5034.09955034.0996

(A87)

(A87)

Tri-Clamp®

L97+A80

L97+A81

Article number

ISO 2037Size

ISO 2037

Size

0.206 4854.7748

4854.7758

4854.7742

4854.7752

Packed lifting knob

H4

4854.7744

4854.7754

11/2”

2”0.761

Inlet

Integrated pipework connection, order separately, please

Valve Size

Type 5034 Integrated pipework connection – Dimensions and Weights US Units

1”

2”11/2”

Orifice[inch2] s

5034.0994

5034.09955034.0996

1/16

1/16

Article number

[inch]d

1

11/2

2

[inch]L

[inch]Sizem

[lbs]

PipeISO 2037

Dimension Weight

0.206 2.4

3.54.9

51/8

73/320.761


Type 5034 Integrated pipework connection – Dimensions and Weights Metric Units

1”

2”11/2”

Orifice[mm2] s

5034.0994

5034.09955034.0996

1.6

1.6

Article number

[mm]d

25.4

3851

[mm]L

[mm]Sizem

[kg]

PipeISO 2037

Dimension Weight

133 1.1

1.62.2

130

180491


LWN 473.01

Clean Service Safety Relief ValvesDimensions and Weights · Pressure Temperature Ratings

91


Orifice[inch2]

0.206

Outlet

Integratedpipework

connection

Center to face Center to face

[inch]b

Tri-Clamp®

[lbs]

HeightHmax.

Weightm

Inlet

2 17/64

2 53/64

1 1/2

1 59/64

[inch]

Butt-weld end b

[inch] [inch]a c

5034.0994

5034.09955034.0996

[inch]

0.761

3 5/32

3 17/32

2 3/64

2 23/64

9 7/32

13 1/32

6.6

11.0


Orifice[mm2]

133

Outlet

Integratedpipework

connection

Center to face Center to face

[mm]b

Tri-Clamp®

[kg]

HeightHmax.

Weightm

Inlet

57.5

72

38

49

[mm]

Butt-weld end b

[mm] [mm]a c

5034.0994

5034.09955034.0996

[mm]

491

80

90

52

60

234

331

3.0

5.0



Orifice[mm2]

133

Set Pressure Range

[bar]Body

Material

max. max.

Temperature Range1

[°C]Sealing

HyTight Assembly

min.Design Material

316L + 15016EPDM

min.

- 45491

0.3

0.1



Orifice[inch2]

0.206

Set Pressure Range

[psig]Body

Material

max. max.

Temperature Range1

[°F]Sealing

HyTight Assembly

min.Design Material

316L + 302232EPDM

min.

- 490.761

4.4

1.5

84 55 343

LWN 473.01


Type 485

92


Gastight cap H2H2





Bellows FFKMS70

Test gagJ70 (H2)


Blind flange for pressure testPart No. 138.8949.9000 (NPS 1”)Part No. 138.8749.9000 (NPS 11/2”)

LWN 473.01


93



0 50 100 150 200 232

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

0

1

2

3

4

5

6

7

8

9

10


Lift

ing

Pre

ssur

e [

psi

g ]

Lift

ing

Pre

ssur

e [

bar

]


0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145



Consult factory

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140145

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



0

1

2

3

4

5

6

7

8

9

10

Lift

ing

Pre

ssur

e [

bar



Consult factory

Lift

ing

Pre

ssur

e [

psi

g ]


Selection chart lifting device H8, size 0. Orifice 0.206 inch2


Type 485

LWN 473.0194

Spare Parts

Discs – Soft seal, disc material: 316L (Item 7)1

Orifice[inch2]

0.2060.761

EPDM FDAEthylene

CRNeoprene

FPM (FKM)Viton®

NBRNitril

FFKMKalrez®

CD200.8169.9741200.2569.9741

200.8169.9791200.2569.9791



N200.8169.9781200.2569.9781

L200.8169.9771200.2569.9771

K200.8169.9751200.2569.9751

O-ring (Item 7.3)

Orifice[inch2]

0.206

0.761

EPDM FDAEthylene

CRNeoprene

FPM (FKM)Viton®

NBRNitril

FFKMKalrez®

CD

502.0123.2641

O-ring sizeARP-no.

1/2 x 3/32

ARP 112

1 x 3/32

ARP 120

502.0123.2691

N

502.0123.2681

L

502.0123.2671

K

502.0123.2651

502.0250.2641 502.0250.2691502.0250.2681502.0250.2671502.0250.2651


0.2060.761

EPDM EthyleneD

FFKM Kalrez®

CO-ring size

46 x 3 mm60 x 3 mm

502.0460.3041 502.0460.3021502.0600.3041 502.0600.3021


0.2060.761

EPDM Ethylene D

224.2349.9000224.2449.9000

FFKM Kalrez®

C

224.1929.9000–


0.2060.761

Part-No.Ø mm

3 480.0405.0000


0.2060.761

Part-No.Ø mm

6 510.0104.0000


0.2060.761


812

480.0405.0000251.0149.0000


LWN 473.01

Clean Service Safety Relief ValvesSurface Quality

95

Surface Quality

7 1 2

5

6

8

4

3

Type 485

Type of surface


ME4(25 μinch)1 ME2

(15 μinch)ME1

(10 μinch)

ME4(25 μinch)

ME2(15 μinch)

ME1(10 μinch)2

Blow off surface

Outer surface

Area

Inlet

Bottom side of disc


Welding seam


ME4(25 μinch)3 ME3

(20 μinch)ME2

(15 μinch)

ME6(100 μinch)4 ME5

(50 μinch)ME4

(25 μinch)

ME5(50 μinch)5 ME4

(25 μinch)ME4

(25 μinch)


Standard

No.

Improved Special


(Ra, Average)

Caution: Electropolishing of the integrated pipework connection is not reasonable before welding.If required surface deviates from standard specify No. and required LESER Surface Grade.Note: 1Refer to page 13.

Type 5034 Integrated pipework connection

Type of surface


M4(25 μinch)7 M2

(15 μinch)M1

(10 μinch)

Outer surface

Area

Pipe inside surface

Outside surface M5(50 μinch)8 M4

(25 μinch)M4

(25 μinch)

Standard

No.

Improved Special


(Ra, Average)

LWN 473.01


Type 485

96

Type 485




Capacities for saturated steam accord-ing to ASME Section VIII (UV) arebased on a pressure equal to the setpressure plus 10 % overpressure. Capacities at 30 psig and bellow arebased on 3 psig overpressure.The temperature is limited by the softseal material.Above EPDM range please use the softseal selection table on page 15.



Set pressure [psig]


0.206 0.761 0.206 0.761 0.206 0.761Set pressure

[psig]


[psig]


15 64 16320 74 18830 94 23840 115 29250 137 34760 159 40270 180 45780 202 51290 224 566100 245 621120 289 731140 332 841160 375 950180 419 1060200 462 1170220 505 1279230 527 1334

15 12.6 31.620 14.2 35.730 17.0 42.840 19.7 49.450 22.0 55.360 24.1 60.570 26.0 65.480 27.8 69.990 29.5 74.1100 31.1 78.1120 34.0 85.6140 36.8 92.5160 39.3 98.8180 41.7 105200 43.9 111220 46.1 116230 47.1 118

15 180 45720 208 52730 263 66740 324 82150 385 97460 445 1128


70 506 128280 567 143690 627 1590100 688 1744120 810 2052140 931 2359160 1052 2667180 1174 2975200 1295 3283220 1417 3590230 1478 3744

LWN 473.01


97

Type 485

133 491 133 491 133 491

Capacities for saturated steam accord-ing to ASME Section VIII (UV) are basedon a pressure equal to the set pressureplus 10 % overpressure.Capacities at 2.07 bar (30 psig) andbelow are based on 0.207 bar (3 psig)overpressure.The temperature is limited by the softseal material.Above EPDM range please use the softseal selection table on page 15.



Set pressure [bar]


[bar]


[bar]




3/ h]


1 108 2722 156 3953 209 5304 263 6655 316 8006 369 9357 423 10708 476 12069 530 134110 583 147612 690 174614 797 201716 904 2287

1 2.81 7.082 3.81 9.573 4.65 11.74 5.37 13.55 6.01 15.16 6.58 16.67 7.11 17.98 7.60 19.19 8.06 20.310 8.50 21.412 9.31 23.414 10.1 25.316 10.7 27.0

1 81 2042 117 2963 157 3974 197 498


5 237 5996 277 7017 316 8028 356 9039 396 100510 436 110612 516 130814 596 151116 676 1714

LWN 473.01


Series 485

98

Country Code

UnitedStates ASME Sec.VIII

Canada CRN

rated K

deratedKD

Type

485

485

Fluid

S / GL

S / GL

S / G / L


M37145M37156M37167M37178

OG0772.9C

0.206

0.761

0.5210.3790.3570.258


0.5790.4210.3970.287


Approvals Type 485

Country Code

0.206

0.761



Fluid

S / GL

S / GL

S / GL

S / GL


0.206

0.761

TUEV-SV 1047

485

485

0.60Kdr

0.400.380.26


Others


072020111Z0008/0/20

0.400.60

αW

0.260.38

Rated slopeWithin the capacity certification accord-ing to ASME Sec. VIII the coefficientsof discharge for Type 484 are estab-lished as “rated slope values” instead ofK values.


Fluid


Orifice0.206

Orifice0.761


G 1.96 SCFM / PSIA

L 2.96 GPM √PSID


4.96 SCFM / PSIA

7.46 GPM √PSID

First in safety…… a not so brief history of LESER

LESER’s factory today

LESER Headquarter1818 –1914

History

LESER is a family owned business,which was founded in 1818 as a brassfoundry. Throughout the followingdecades of the “industrial revolution”, abroad product portfolio of componentsfor mechanical and industrial equip-ment was developed. Originally, LESERfocused on tough applications, andbecame renowned for its steam boilerlevel gauges.

In 1885, LESER delivered its first safetyvalve and as a result of rapid industrialgrowth and an increasing demand forsafety, LESER quickly adapted to spe-cialize in safety valves. By the 1980’ LESER became thelargest supplier of safety valves inEurope. LESER is currently expandingits worldwide activities, especially inAsia and the America’s.

Safe solutions from thespecialist

Today, LESER´s product range includes23 different safety valve designs with avariety of materials and sizes from 1/2”to 16”.This diverse product range allows asafe solution to be provided for almostevery application.

● Full lift safety valves● High-pressure safety valves● Safety valves according to API 526● Relief and safety relief valves● Clean service safety relief valves● Safety valves for critical service con-

ditions● Safety valves according to special

standards and regulation● Safety valves with supplementary

pneumatic load● Special versions

Where to find LESER

Headquarted in Germany with a state-of-the-art factory and more than 300employees, LESER is supplying highquality safety valves all over the world.LESER is present through subsidiariesand qualified partners in over 40 coun-tries, allowing for a fast response anddelivery to any location.

For the nearest source please contactus at:

LESER LLC10615 Texland Boulevard,Suite 100Charlotte, NC 28273, USAPhone: 704- 587- 3670Fax: 704- 587- 3672e-mail: [email protected]

www.leser.com

Type 526Type 488

Type 437

Type 441 Type 459

LESER LLC

The-Safety-Valve.com

Clean Service CatalogEdition August 2006

LWN 473.01 / 07.2008 / 2000

10615 Texland Boulevard, Suite 100Charlotte, NC 28273, USA

Phone: 704- 587- 3670Fax: 704- 587- 3672

e-mail: [email protected]

Documents

Folder 48X CS 09 07 2008 · 2015. 6. 18. · ASME Section VIII – National Board certified capacities (single trim for steam, gas and liquid service): UV-stamp ASME Section II –