PRODUCT SELECTION GUIDE - lindenequipment.com industrial brochure.pdf · exactly like a high pressure safety relief valve and should not be sized at 10% or 20% over pressure. When

Pressure/Vacuum Relief Valves

Pressure Relief Valves

Vacuum Relief Valves

Pilot Operated Relief Valves

Emergency Relief Valves

Flame & Detonation Arresters

Blanket Gas Regulators

PRODUCT SELECTION GUIDE

1185 Tower Road

Schaumburg, IL 60173

Ph. 847.885.0300 Fax: 847.885.0303

lindenequipment.com

Represented by:

GROTH CORPORATION

Groth Corporation was estab-lished as Groth EquipmentCorporation in Houston, Texas in1960. In 1971 Groth began manu-facturing pressure/vacuum reliefvalves and flame arresters. Today,Groth is a global leader in manu-facturing pressure/vacuum reliefvalves, flame and detonationarresters, blanket gas regulatorsand other low pressure relief prod-ucts. We are located in Stafford,Texas, in a new facility. InSeptember 1999, Groth became apart of the Continental DiscCorporation family of companiesthat produce pressure relief prod-ucts for industrial applications.Continental Disc Corporation isheadquartered in Liberty, Missouri.

PRESSURE/VACUUMRELIEF VALVE

The pressure/vacuum relief valveis a protection device mounted ona nozzle opening on the top of afixed roof atmospheric storagetank. Its primary purpose is to pro-tect the tank against rupturing orimploding. Without an opening ora controlled opening, a fixed roofatmospheric tank would ruptureunder increasing pressure causedby pumping liquid into the tank oras a result of vapor pressurechanges caused by severe ther-mal changes. Imploding, or thecollapsing of a tank, occurs duringthe pumping out procedure orthermal changes. As the liquidlevel lowers, the vapor spacepressure is reduced to belowatmospheric pressure. This vacu-um condition must be controlledby allowing atmospheric air to flow

into the tank. In short, the tankneeds to breathe in order to elimi-nate the possibility of rupturing orimploding. Because of its primaryfunction, a pressure/vacuum valveis commonly referred to as a“breather valve.”

FLAME/DETONATIONARRESTERS

Flame arresters are fire safetydevices. They prevent flames fromentering a tank and also provideprotection from flashes within atank. They can also be used as anin-line flashback prevention device.

EMERGENCY VALVE

The primary function of the emer-gency relief valve is to provide acontrolled opening on a tank thatwill be large enough to preventrupturing of the tank under severepressure increases caused byproximity to intense fire.

Each of these safety devicesare used on the atmospheric,fixed roof, non-refrigerated stor-age tank.

FLAME ANDDETONATIONARRESTERS

BLANKET GASREGULATOR &PILOT OPERATEDRELIEF VALVE

PRESSURE VACUUMRELIEF VALVES

OVERVIEW

Groth Corporation, a Continental Disc company, Stafford, TX, USA2

WHY PRESSURE/VACUUMRELIEF VALVES AREREQUIRED

1. Saves money by saving product.2. Protects tank from over or under

pressure when sized properly.3. Protection against fire hazard when

conforming to API standards.4. Minimizes evaporation loss.5. Reduces atmospheric corrosion

of tank.6. Generally in all cases required

by OSHA, EPA, etc.

PRESSURE/VACUUMVALVES SAVE MONEY

Actually, any properly sized openingin the tank’s upper structure protectsthe tank from damage, but utilizing apressure and vacuum valve alsoserves to accomplish other advan-tages. Two of the more importantare: economic savings and fire haz-ard protection. In 1952, AmericanPetroleum Institute developed a for-mula to determine tank evaporativelosses. The API equation was for-mulated after the results of a total of256 individual tests were compiled.Of the 256 tanks tested (1/2 withopen vents and 1/2 withpressure/vacuum valves), only 178were considered valid. The remain-der were eliminated because ofinadequate data, obviously incor-rect test methods, poor tankconditions, or leaky fittings. The APIhas a formula for calculating tankbreathing loss. The principle factorsare: turnovers per year, true vaporpressure of the product, diameter ofthe tank in feet, the average outagein feet, the average daily ambienttemperature change, and the paintfactor. The test was conducted ontanks containing gasoline with pres-sure and vacuum valves set at

1/2 oz. pressure and 1/2 oz. vacu-um. API 2521 states that 1/2 oz. isthe usual setting.

CALCULATING TANKPRODUCT LOSS

A multiple correlation for tanks 20feet in diameter or larger, basedon model equation, derived fromthe tests on the tanks, yielded inthe case of gasoline:

Where:Ly = the breathing loss in barrels

per year.TPY = turn overs per yearP = the true vapor pressure at

bulk liquid temperature inpounds per square inchabsolute

D = tank diameter in feetH = the average outage in feetT = average daily ambient tem-

perature changeFp = the paint factor

A modification of the above equa-tion was then required whichwould accommodate small-diame-ter tanks.

Where:C = adjustment factor for

smaller diameter tanks

IN MOST CASES APRESSURE/VACUUMRELIEF VALVE WILL PAYFOR ITSELF BEFORE YOUPAY THE INVOICE

The results of these tests indicatethat the evaporation loss on a tankwith a 55,000 barrel capacitywould be 2,000 barrels per year ifan open vent was installed, andonly 1,382 barrels per year if apressure/vacuum valve was uti-lized, thereby saving 618 barrelsper year, every year. This studyalso coined a new catchword,“Conservation Vent.” So if youhear the term conservation vent,you know that the valve referred tois a pressure/vacuum valve orbreather valve.

If the product in the tank cost $40per barrel, this would be a savingsin one year of $24,720 per tank.Pressure/vacuum relief valvesprovide savings of millions of dol-lars and millions of barrelsof product in a large facility suchas the one illustrated on page 4.Depending on size and materialsof construction, a breathervalve can pay for itself in less thana month.

Breathing loss

Tank Estimated Estimated BBLS/YearDiameter Nominal Losses With Losses Saved Using

in feet Tank Pressure Relief with PressureCapacity Valve Open Vent Relief Valve

30 5,000 154 235 8142.5 10,000 297 441 14460 20,000 570 825 255100 55,000 1,382 2,000 618

API’S ESTIMATED BREATHING LOSS TABLE


ADVANTAGES

Ly = TPY ( P ).68

D1.73H.51T.50FpC1,000 14.7-P

Groth Corporation, a Continental Disc company, Stafford, TX, USA 3

Ly = TPY ( P ).68

D1.73H.51T.50Fp1,000 14.7-P

An advantage of using a pres-sure/vacuum valve is that thevalve provides fire protection forthe tank. A pressure/vacuum valveis normally closed except whenventing due to pressure or vacuumconditions. An open vent alwayshas a free passageway betweenthe vapor in the tank and atmos-phere. Therefore, a pressure/vacuum valve is usually closedallowing the tank vapor to reachtrue vapor pressure.

Under true vapor pressure, thevapor in the tank is too rich toburn. The tank is also closedoff eliminating a free passagewayfor fire or sparks to ignite thepotentially combustible vapor inthe tank. If the valve has beenactivated by excessive tank pres-sure, the now open valve iscausing a condition where anyvapors escaping are under posi-tive pressure and the fire hazardwill be kept away from the vaporcontent of the tank. If flames are inthe area and the tank is beingemptied, vapors are not escapingand combustion is not likely tooccur even though the tank mayhave a combustible mixture.

1. Closed tank principle. When apressure/vacuum valve isclosed, vapors are not escapingto support combustion.

2. Pressure when open principle.When the valve is open, thevelocity of the relieving vapor isgreater than the flame speed.

3. Over rich principle due to equi-librium being reached in aclosed tank and therefore thevapors are too rich to burn.When emptying or pumpingfrom the tank, oxygen richvapors are susceptible to burn-ing and flame arresters shouldbe installed between the pres-sure/vacuum relief valve andtank nozzle.

4. The vacuum created duringpump out of product will preventfumes from escaping whichnormally does not present afire hazard.

REDUCED CORROSION

An additional reason for usingpressure/vacuum valves, theyhelp reduce overall corrosion inthe plant. Plant corrosion isreduced due to less productescaping from the tank and there-fore less corrosion is producedby escaping vapors. This meansoverall plant maintenance isreduced thereby saving labor anddollars.

RECOMMENDED ANDREQUIRED

Pressure/vacuum valves are rec-ommended by API 2000 for useon atmospheric storage tanks inwhich oil with a flash point below100° F is stored. OSHA statesthat tanks storing Class 1 liquidsshall be equipped with ventingdevices which shall be normallyclosed except under pressure orvacuum condition.

Generally speaking, the majorityof the regulatory bodies dealingwith tank safety, API, OSHA,NFPA, Insurance Companies etc.require installation of thesedevices on flammable liquidstorage tanks.


BASIC FIRE PROTECTION

ADVANTAGES


HOW PRESSURE/VACUUMRELIEF VALVES OPERATE

How does a pressure/vacuum valveoperate? Most atmospheric tanksrequire a venting device that willallow large volumes of vapor toescape under relatively low pres-sures. Usually the allowable setpressure is in inches of water col-umn pressure, both for positive andvacuum conditions. This is becausemost large storage tanks have a rel-atively low maximum allowableworking pressure. These tanks aregenerally large volume welded ves-sels that are built to API 650 stan-dard. In order to accommodatelarge volumes at low set pressures,these valves have ports that aregreater in area than the inlet or noz-zle connection. The low settingrequired necessitates weight loadingthe valve as opposed to spring load-ing. Because of the above, a pres-sure/vacuum valve requires approxi-mately 100% over set pressure inorder to reach full opening of thevalve. However, when deciding on aset pressure, the weight-loadedvalve operation MAWP should be atleast twice the required set pressure

to obtain optimum flow. If theMAWP is less than 100% above therequired set, the valve could be larg-er in size than normally required.The possibility of valve chatter andaccelerated seat and diaphragmwear will exist if less than 20% overpressure is allowed. Simply stated,a pressure/vacuum valve is not

exactly like a high pressure safetyrelief valve and should not be sizedat 10% or 20% over pressure.When sizing a pressure/vacuumvalve, consult the manufacturer flowtables and allow sufficient oversetpressure.

SPRING LOADED VALVES

The spring loaded valve is used onhigher pressure tanks (1-15 PSIGsettings). They will protect from overpressure and excessive vacuumwhile reducing tank breathing, there-by saving product.

Spring loaded valves weigh lessthan a weight loaded valve setat 1 psi.

MODEL 1201B

Pressure/Vacuum Valve Operation

ATM

ATMTank Vacuum

Tank Pressure

MODEL 1660A

OPERATION


PILOT OPERATEDRELIEF VALVE

The Pilot Operated Relief Valve isdesigned to provide safe, depend-able, and accurate low pressureand/or vacuum protection. Full flowis attained at no more than 10%overpressure. Thisreduces the need forhigh over pressurewhich conserves prod-uct and reduces fugitiveemissions. Blowdownmay be adjusted torequirements between0% and 20% of setpressure. Properlyadjusted the PilotOperated Relief Valveis bubble tight up to 95% of setpressure. The Pilot Operated ReliefValve provides themaximum available control technol-ogy as specified in the Clean AirAct of 1990.

SIZING A PRESSURE/VACUUM RELIEF VALVE

API Standards are provided as anengineering aid for specification andselection of “normal” and “emer-gency” pressure and vacuum reliefvalves for aboveground liquid petro-leum storage tanks. Normal ventingcapacity is obtained without exceed-ing pressure or vacuum that wouldcause physical damage or perma-nent deformation to the tank. Thefollowing will help in sizing a pres-sure/vacuum valve:1. Normal Relief: The sum of vapor

replacement resulting from emp-tying or filling and thermalin-breathing or out-breathing.

2. Emergency Relief: Thermal out-breathing from fire exposure.

3. All Tanks: Generally require thesizing of a normal pressure andvacuum relief valve to be sizedand an independent emergencyrelief valve to be sized separately.

4. Flow Curves: These curvesprovide pressure and vacuumcapacity which is requiredfor sizing.

OSHA AND APIREQUIREMENTS

The OSHA requirement for tankprotection published by theDepartment of Labor as part1910.106, revised July 1, 1985,addresses sizing requirements.OSHA suggests sizing shall bein accordance with API 2000,which clearly defines allrequirements.

PRESSURE/VACUUMRELIEF VALVE SETTING

API 2521

“Pressure/vacuum valves on atmos-pheric pressure fixed-roof tanks areusually set at 1/2 oz. per square inchpressure or vacuum. Test data indi-cate that an increase of 1 oz. persquare inch in the pressure set pointover the usual 1/2 oz. per squareinch reduces breathing losses byapproximately 7 percent. However,the test data indicate that each addi-tional increase of 1 oz. per squareinch in pressure set point reducesthe breathing losses in progressivelysmaller increments.”

API 2513

“The pressure and vacuum settingof a breather valve are dictated bythe structural characteristics of thetank and should be within safeoperating limits. A certain amountof pressure and vacuum beyondthis setting is necessary to over-come pressure drop in order toobtain required flow. Proper sizeand settings can best be deter-mined by reference to API Std2000: Venting Atmospheric andLow-Pressure Storage Tanks(1992) and to the manufacturer'stank data determined in accor-dance with this publication. Thepressure setting for pressure/vacuum valves to be installed onlarge tanks constructed in accor-dance with API 12: Specificationfor Large Welded ProductionTanks (1957) usually is limited to1/2 oz. because roof plates willstart to shift when the pressureincreases above 1 oz.”

API Standard 2000 for VentingAtmospheric and Low Pressure Storage Tanks

1. TO HOLD LIQUID

Liquid exerts pressure on the sides and base ofthe tank. Pressure=height of liquid.

2. TO BE FILLED

For liquid to get in, air and vapor must get out. Ifthey can’t, the tank will be pressurized. For airand vapor to be pushed out, the pressure in thetank must be slightly above atmospheric pres-sure. The tank is designed for an internalpressure of 8 in. water gage (WG).

3. TO BE EMPTIED

For liquid to get out, air must get in. If it can’t, thetank will be underpressured. For air to be suckedin, the pressure in the tank must be slightly belowatmospheric pressure. The tank is designed foran external pressure (or vacuum in the tank)of 2 1/2 in. WG.

STORAGE TANK DESIGN(National Fire Protection Agency)

STANDARDS


FLAME ARRESTER

A flame arrester is a safety deviceinstalled on a nozzle on top of a tankwhen the flash point of the storedproduct is lower than the possibletank temperature. A majority of thetime, a “vent to atmosphere”pressure/vacuum valve is installedon top of the flame arrester. Aflame arrester is also used as in-linesafety device where combustible

gases are transported through lowpressure pipe lines to actual com-bustion, as in an incinerator or flareor where combustion fumes arevented through piping to atmos-phere where lightning can cause aflame. Flame arresters should bedesigned to stop tank farm firescaused by lightning, sparking, oractual flame in the immediate tankarea, and to prevent flashbacks inlines. In order to accomplish theabove, a flame arrester must act asa barrier (stop a flame), a flameholder (contain the flame at the bar-rier), and dissipate heat in order toprevent auto ignition on the downside of the flame arrester.

In order to be an effective flame pre-vention device, a flame arrestermust have a quenching or hydraulicdiameter small enough to stop theflame created by the combustiblegas. Each combustible gas has adifferent required hydraulic diameterto stop the flame.

In addition to stopping the flame,an arrester must be able to dissipateheat. Flame element mass ensuresthat hot gases above the autoignition temperature never reachthe downstream side of the flamearrester.

With an in-line installation, structuralintegrity is important to insure safetyif a detonation should occur. Propergasketing to insure an oxygen-freeenvironment in the event of a deto-nation is also important. Unless aflame arrester meets or exceeds theabove mentioned design criteria, it isnot a true flame arrester.

DETONATION ARRESTER

A detonation arrester is anothersafety device installed in a pipingsystem. A detonation is defined as aflame front propagating through aflammable gas or vapor at a velocityequal to or greater than the speed ofsound. A detonation arrester shouldbe installed when the source of aflash back is greater than ten pipediameters from the installation of thearrester or when there is a possiblerestriction in the line. Groth Deto-nation Flame Arresters are bi-direc-tional and can be installed in a verti-cal or horizontal piping installation.The model 7658A has been suc-cessfully tested and USCGapproved as a Type II DetonationFlame Arrester suitable for applica-tions where stationary flames mayrest on the element.

AIR OPERATEDRELIEF VALVE

Air operated relief valves are usedto replace weight loaded and pilotoperated valves in severeapplications where polymerizationand crystalization may takeplace and plug as well as corrodethe pilot valve. The pressureswitch coupled with a solenoidvalve and using plant instrumentair instead of corrosive productvapor provides a bubble tight sealin the valve.

MODEL 7658A

MODEL 1520

PRODUCT DETAIL


VAPOR RECOVERY SYSTEM

With the implementation of the Clean Air Act of 1990, most Liquid Product Storage terminals and hydrocarbon pro-cessing plants must control evaporative hydrocarbon emissions from loading and storage operations. Two types ofrecognized technologies are vapor recovery using carbon absorption or vapor combustion. Both systems requirepressure/vacuum valves and flame or detonation arresters to minimize emissions and maximize safety.

EMERGENCY VALVES

Emergency valves are required byAPI on storage tanks in order toprotect the tank against excessivepressure caused by external fireexposure or flashes within thetank. The excessive pressurecaused by an external fire is gen-erally because an adjacent tank ison fire or some other structure inproximity is on fire. Flashesare generally caused by achemical reaction in the tank.Regardless of the cause of theexcessive pressure, an openinglarger than the normal pressure/vacuum valve is necessary in

order to carry off the additionalvolume resulting from the fireexposure the tank is experiencing.API 2000 states emergency vent-ing may be accomplished by theuse of:

1. Larger or additional open vents2. Larger or additional

pressure/vacuum valves orpressure relief valves

3. A gage hatch which permits thecover to lift underabnormal internal pressure

4. A manhole cover whichpermits the cover to lift underabnormal internal pressure(ERV Model 2000A/2400A)

5. A connection between the roofand shell which is weaker thanthe weakest vertical joint in theshell or shell to bottom connec-tion (weak roof to shell weld)

MODEL 2000A

TYPICAL VAPOR RECOVERY SYSTEM

PRODUCT DETAIL


GAS BLANKETING

The Groth Blanket Gas Regulatorensures that a constant gas pres-sure is maintained in the vaporspace of a storage tank. Whenliquid is removed from a tank or thetemperature is reduced, a vacuumwould be developed. With the Groth

Blanket Gas Regulator, a blanketgas is supplied to prevent a vacuumfrom developing and to maintain thedesired blanket pressure. In additionto preventing outside air and mois-ture from entering the storage ves-sel, a blanket gas pressure, as lowas 1/2” W.C., reduces the evapora-tion of the stored product to a negli-gible amount. The result notonly conserves product but alsogreatly reduces emissions. Theseadvantages are in addition to the fireprotection that is provided.

CONCLUSION

Tank protection equipment is specialized. Understanding this equipmentand how it should be applied will ensure that your storage tank is protectedproperly from any number of potential hazards. Protection from rupturing orimploding and protection from fire hazards are the major considerations.Environmental and conservation features enhance the value of these prod-ucts.

CAL-Q-SIZE PRODUCT CAPACITY RATINGSPC compatible sizing program for Pressure/Vacuum Valves in accordancewith API 2000. Download from our website at www.grothcorp.com or contactGroth Corporation Sales Department.

CLEAN AIR ACT OF 1990 METHOD 21 LEAK TEST

The 1990 amendment to the 1977 Clean Air Act requires the emissions ofany of the identified volatile organic compunds (VOCs) be kept to under500 parts per million (PPM). Method 21 is the leak test procedure used todetect rate of leakage from process equipment, including valves, flanges,pressure relief devices, etc. Groth Corporation Pilot Operated Valves (withthe film seat option) and Blanket Gas Regulators provide pressure and/orvacuum protection for liquid storage tanks while assuring your compliancewith the Clean Air Act.

VAPOR EMISSION REDUCTION


PILOT OPERATED RELIEF VALVES

PRESSURE RELIEF VALVES VACUUM RELIEF VALVES

PRESSURE/VACUUM RELIEF VALVES

Fiberglass Valves• Most Groth valves can be

constructed of fiberglass.

Model 1560• Air actuated pressure relief

for extreme service• Modular design• Pressure relief• High flow capacity• Sizes: 2" through 12"• Pressure settings:

3 oz./in.2 through 15 PSIG

Model 1360 A• Vacuum breaker• Modular design• Side mount• Modular design• Sizes: 3" through 14"• Vacuum settings:

1/2 oz./in.2 to 12 PSIG

Model 1300 A• Vacuum breaker• Modular design• Sizes: 2" through 12"• Vacuum settings:


Model 1200 A• Pressure/Vacuum

Relief Valve• Modular design• Sizes: 2" through 12"• Pressure settings:

1/2 oz./in.2 to 15 PSIG• Vacuum settings:


Model 1220 A• Pressure/Vacuum Relief Valve• Pipe-away feature• Modular design• Sizes: 2" through 12"• Pressure settings:

1/2 oz./in.2 to 15 PSIG• Vacuum settings:


Model 1260 A• Pressure Relief Valve• Modular design• Pipe-away feature• Sizes: 2" through 12"• Pressure settings:


Model 2300 .A• Pressure Relief Valve• Modular design• Sizes: 2" through 12"• Pressure settings:


Model 1420• Pressure/Vacuum Relief Valve• Modular design• Pressure & vacuum relief• High flow capacity• Sizes: 2" through 12"• Pressure settings:

3 oz./in.2 through 15 PSIG• Vacuum settings:


Model 1660A• Pressure Relief Valve• High flow capacity• Sizes: 2" through 12"• Pressure settings:

2" W.C. through 15 PSIG

Available in aluminum (type 356), carbon steel, stainless steel, fiberglass, and other materials, in most models.

Model 2500• Emergency Relief Valve• Sizes: 18" and 24"• Pressure settings:

8 oz./in.2 to 15 PSIG

Model 1220 A / 7618• Pressure/Vacuum Relief

Valve and Flame Arresterw/Pipe-Away Feature


BLANKET GAS REGULATOR FLAME TRAP ASSEMBLIES

FLAME AND DETONATION ARRESTERS

EMERGENCY RELIEF VALVES

Model 7618• Flame arrester

(vertical design)• FM approved• Sizes: 2" through 60"• Available with weather hood

Model 7628• Flame arrester

(horizontal design)• FM approved• Sizes: 2" through 30"

Model 7658 A• Detonation arrester

(horizontal design)• Coast Guard approved• Sizes: 2" through 24"

Model 7622• Flame check• Sizes: 1/2" through 1-1/2"

Model 2301A• Pressure Relief Valve• Sizes: 2" through 12"• Pressure settings:


Model 2000A• Emergency Relief

Manhole Cover• Sizes: 16", 20", and 24"• Pressure settings:

1-1/2 oz./in.2 to 16 oz./in.2

• Also available withvacuum breaker

Model 2450A• Emergency Relief Manhole

Cover with hinged cover withvacuum breaker

• Sizes: 20" through 24"• Vacuum settings:

1/2 oz./in.2 to 4 oz./in.2

• Pressure settings:2 oz./in.2 to 8 oz./in.2

• Also available pressure only

Model 2100• High Pressure Emergency

Relief Valve• Sizes: 16", 20", and 24"• Pressure settings:

1 PSIG to 15 PSIG

Model 8500A• Flame Trap Assembly• Sizes: 2" through 12"

Model 8400A• Back Pressure Regulator and

Flame Trap Assembly• Sizes: 2" through 12"

Series 3000• Blanket Gas Regulators• Depad Valves• Setting from 0.5" W.C.

to 15 PSIG• Consult factory for

vacuum applications


STEAM JACKETED PRODUCTS

TEST STANDS

ADDITIONAL PRODUCTS

Model 6000 Series• Gauge hatch• Sizes: 4" through 10"

Model 8110• Back Pressure Check Valve• Sizes 2" through 12"

Pressure/Vacuum Relief Valve Test Stand• Provides convenient, accurate testing and setting of

P/V valves or high pressure relief valves. Includes leak testing.

GROTH CORPORATION13650 N. Promenade Blvd.

Stafford, Texas 77477Phone 281-295-6800 • Fax 281-295-6999

800-354-7684

Groth is committed to the totalquality improvement process.

Visit us at our website:www.grothcorp.com

Groth E-mail address:[email protected]

Most Groth valves and flame arresterscan be steam jacketed.

Groth Corporation, a Continental Disc company, Stafford, TX, USA 92880 Rev. A, ProdSelGuide.qxd, 3m, 11/06 ©Copyright 2002 Groth Corporation12

CDC CorporateHeadquarters

Continental Disc Corporation

3160 West Heartland Drive

Liberty, Missouri 64068-3385

Phone: + 816-792-1500

Fax: + 816-792-2277

E-mail: [email protected]

Website: www.contdisc.com

GermanyContinental Disc

Deutschland GmbH

Virmondstrasse 151

47877 Willich Germany

Phone: + (49) 2156-490802

Fax: + (49) 2156-492547


The NetherlandsContinental Disc Corporation

Energieweg 20

2382 NJ Zoeterwoude-Rijndijk

The Netherlands

Phone: + (31) 71-5412221

Fax: + (31) 71-5414361


United KingdomContinental Disc UK Ltd.

Unit C, The Business Centre

Faringdon Avenue,

Harold Hill, Romford

Essex RM3 8EN

United Kingdom

Phone: + (44) 1708-386444

Fax: + (44) 1708-386486


ChinaContinental Disc Corporation

2026 The Executive Center

20/F The Center

989 Changle Rd.

Shanghai, 200031

P.R. China

Phone: + (86) 21-5117-5848

Fax: + (86) 21-5117-5849

Mobile: + (86) 137-8897-2291


DubaiContinental Disc Corporation

P.O. Box 2234

Dubai, U.A.E.

Phone: + (971) 43214490

Fax: + (971) 43438840

Mobile: + (971) 508129525


Pressure Equipment DirectiveAvailable When Specified

CE-Marked Flame Arresters perATEX Directive Are Available

When SpecifiedA Siegel-Robert Company

1185 Tower Road

Schaumburg, IL 60173

Ph. 847.885.0300 Fax: 847.885.0303

lindenequipment.com

Documents

PRODUCT SELECTION GUIDE - lindenequipment.com industrial brochure.pdf · exactly like a high pressure safety relief valve and should not be sized at 10% or 20% over pressure. When