Anderson Greenwood POPRV Catalog - valve sales and · PDF file• Field test connection:...

General applicationOil and gas production/processing,petrochemical, chemical, air seperation, foodand beverage processing, paper mills, etc. Inthe highly specialized field of pressure reliefdevices, no manufacturer can match thediversified products and experience ofAnderson Greenwood. With more designsthan any other worldwide manufacturer,Anderson Greenwood’s product technologysolves applications from the most severeproblem to very basic service conditions. ThePOPRV designs include metal and soft seatedpilot valves and main valves offering premiumperformance. Anderson Greenwood POPRVsmeet the specifications of API 526. In additionto our well-known product quality, ISO 9001certification has been awarded to ourmanufacturing plants, ensuring the ability todeliver products that meet customers’ preciserequirements well into the 21st century andbeyond.

Why specify pilot operated pressurerelief valves?• Resolve difficult application issues• Reduced installation costs• Reduced product loss• Increased production levels• Reduced maintenance costs• Reduced environmental pollution• Increased operating income

Features and Benefits• Soft seat design: Provides repeatablebubble-tight performance before and aftereach relief cycle.

• Metal-to-metal seat design: Provides pilotvalve performance in high temperatureservice.

• Bubble-tight seats near set pressure:Allows higher system operating pressureand, therefore, maximum process output;not as sensitive to vibrational and pulsatingservice; reduces product loss.

• Pop action available: No main valvethrottling, which helps prevent freeze-upsin cryogenic or refrigerant type services.

• Modulation action available: Minimizedproduct loss per relief situation; reducedenvironmental pollution; avoids oversizingconsequences; not as sensitive to inletpressure losses as pop action.

• Field test connection: Quick simpleverification of set pressure while valveremains in service.

• Balanced design: Lift not affected by backpressure; no expensive and fragile bellowsrequired to balance against high backpressure

• Externally adjustable blowdown: Allowsblowdown adjustment with valve in service;no costly removal of valve or systemshutdown required.

• Patented, piston wedge ring: Preventsresonant chatter; no resultant severe valvedamage, lost product or hazard topersonnel.

• Full lift at set pressure: No overpressurerequired for full lift; allows D.O.T. installationto be set higher than Maximum AllowableOperating Pressure (MAOP) when popaction is used.

• Replaceable soft seats and seals: Allseats and seals are easily and quicklyrenewable; no expensive, time-consumingseat lapping required.

Pilot Operated Pressure Relief Valves

ANGMC-0243-US-1111www.tycoflowcontrol.com/valvesCopyright © 2011 Tyco Flow Control.

Anderson Greenwood POPRV CatalogSeries 200, 400, 500, 700, and 800

Ordering (to order the valve)

Construct a Model Number

(Page 51)

Review Accessories and Options(Pages 52 - 54)

ReviewDimensions and

Weights(Pages 57 - 60)

How to use this catalogAnderson Greenwood is the established and consistent leader inpilot operated, pressure relief valve technology. More than sixdecades of pilot valve experience enables us to produce, supply,and support pressure relief valves that:• assure leak-free system operation very close to PRV setpressure

• relieve consistently within code tolerances• reseat bubble-tight after a short and stable blowdown• operate through many relief cycles without maintenance

This catalog is divided into three primary parts, which provide step-by-step instructions that make it easy for you to select a valvetype, determine the proper orifice area, and order the valve.

Part 1, Selection, helps you determine the type of valve that bestsuits your application.

Part 2, Sizing, provides the information you need to choose thecorrect valve orifice area. (Sizing is actually part of valveselection, but since sizing is such an important factor inselection, a separate section is provided to help you makethe proper choice.) We offer sizing software at thefollowing url link: http//sizing.tycovalves.com/.

Part 3, Ordering, explains how to select and order the specificmodel number, after you have chosen the appropriate valvetype and size.

Use Application Guide(Page 3)

Selection (to narrow your choice)

UseSizing Formulas

(1)

ReviewOrifice Areas(Page 28)

ReviewSizing Factors(Pages 22 - 27)

Sizing (to identify orifice size required)

ContentsHow to Select a Valve Type . . . . . . . . . . . . . . . . . . . . . . . 3Application Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SelectionPilot TypesSeries 200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 5Series 400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 8Series 500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 10Series 700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 14Series 800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 - 17Series 400 Iso-Dome . . . . . . . . . . . . . . . . . . . . . . . . . 18 - 19

SizingHow to Size a Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Sizing Formulas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Sizing Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 - 27Valve Orifice Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

OrderingHow to Order a Valve . . . . . . . . . . . . . . . . . . . . . . . . . . 29Materials of ConstructionStandard Main Valve . . . . . . . . . . . . . . . . . . . . . . . . . 30 - 31Series 200 Pilot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 - 33Series 400 Pilot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 - 35Series 500 Pilot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 - 37Series 700 Pilot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 - 39Series 800 Pilot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 - 41Inlet Flange Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Recommended Soft Goods Limits . . . . . . . . . . . . . . . . . 42 - 50Model Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Accessories and Options . . . . . . . . . . . . . . . . . . . . . . . . . 52 - 56Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . 57 - 60Outlet Flange Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . 61

ANGMC-0243_Nov 2011 page 2


Maximum set pressure comparisonValve Orifice Area Direct Spring Operated, AG Pilot Operated,

in [mm] in2 [cm2] psig [barg] psig [barg] 10 x 14 [254 x 356] 63.50 [409.7] N/A 740+ [51.0+]

8 x 10 [200 x 250] Full Bore 38.96 [251.37] N/A 1480+ [102.0+]

8T10 26.00 [167.75] 300 [20.7] 1480+ [102.0+]6R8 16.00 [103.23] 300 [20.7] 1480+ [102.0+]

4P6 6.38 [41.16] 1000 [69.0] 3705+ [255.5+]3K4 1.83 [11.86] 2220 [153.1] 3705+ [255.5+]

Height comparisonValve Rating Direct Spring Operated, AG Pilot Operated, Height

in [mm] in [mm] in [mm] Saving8 x 10 [200 x 250] 150# 57 [1448] 30 [762] 47%6 x 8 [150 x 200] 300# 43 [1092] 26 [660] 40%4 x 6 [100 x 150] 300# 37 [940] 23 [584] 38%3 x 4 [80 x 100] 600# 34 [864] 20 [508] 41%2 x 3 [50 x 80] 600# 23 [584] 19 [483] 19%

Weight comparisonValve Rating Direct Spring Operated, AG Pilot Operated, Weight

in [mm] lb [kg] lb [kg] Saving8 x 10 [200 x 250] 150# 750 [340.9] 421 [191.4] 44%6 x 8 [150 x 200] 300# 480 [218.2] 264 [120.0] 45%4 x 6 [100 x 150] 300# 230 [104.5] 160 [72.7] 30%3 x 4 [80 x 100] 600# 160 [72.7] 92 [41.8] 42%2 x 3 [50 x 80] 600# 70 [31.8] 53 [24.1] 24%

Higher maximum set pressuresAnderson Greenwood’s POPRVs are able tooperate at considerably higher set pressuresthan is possible with spring loaded SRVs. Insome cases one POPRV can replace multiplespring loaded SRVs, reducing capital andinstallation costs.

Lower height profileBecause the Anderson Greenwood POPRV doesnot use a spring to hold the main valve seatclosed, considerable height savings are achievedin the valve design. The same pilot valve is usedfor all main valve sizes providing significantheight savings particularly on larger and higherpressure valves. This enables the POPRVs to beused in applications where space is at apremium.

Weight savingsAs valve size and set pressure increases, a largerspring is needed to keep the seat of a springloaded SRV closed – increasing the weight of thevalve. Signifi cant weight savings are provided bythe Anderson Greenwood POPRV, which usessystem pressure via the pilot valve to maintainseat tightness. These weight savings allow costreductions on plant construction and, inparticular, on offshore oil and gas platforms.

How to select a valve typeTo determine which pilot operated safety relief valve type is most appropriate for yourapplication, please use the following guidelines:

1. In the Application Guide, note which valvetypes seem most appropriate for yourapplication.

2. Read the associated descriptive and operatinginformation in the catalog dedicated to thattype of valve (Series 200, 400, 500, 700 or800).

3. Using the formulas in Part 2, Sizing (page 23),determine the required orifice area for yourservice conditions and select the orifice areathat suits your application.

4. If you have been able to determine a pilotoperated valve type and orifice area that suits your application, refer to Part 3, Ordering(page 33), to select and order a specific modelnumber. If you were not able to find a valvetype to meet your application needs, pleasecontact your Anderson Greenwoodrepresentative for assistance.

Application guide

OptionsSet Pressure Valve Series

psig [barg] 200 400 500 700 800

15 – 720 [1.03 – 49.64]1 X15 – 1480 [1.03 – 101.97] X

25 – 6170 [1.72 – 425.42]3 X50 – 1200 [3.45 – 82.74] X

1481 – 6170 [102.12 – 425.42]3 X

Valve Action

Pop X XModulating X X X

Service

Gas/Vapor X X X X XLiquid2 X X X

Steam X X

Process Temperature, °F [°C]

Ambient to +1000 [Ambient to +538] X-65 to +600 [-54 to +315] X X

-423 to +600 [-252 to +315] X-65 to +515 [-54 to +268] X

Notes:1. 1" x 2", 11/2" x 2" and 11/2" x 3" [40 x 80 mm]

Type 546 has 25 psig [1.72 barg] minimum set.

2. Use Type 249, 259, 269 for cryogenic liquid (set pressure range for this valve type is 25 to 1440 psig [1.72 to 99.3 barg]).

3. Higher pressures available on special order.

4. Not all valves are available for service at the extreme limits for both temperature andpressure simultaneously.



Anderson Greenwood’s Series 200 pop action,safety valve, with non-flowing pilot, providessystem overpressure protection you can counton. Since its 1966 introduction, it has beencontinuously refined and remains the standardagainst which all other pilot operated valvesare compared. This valve is well suited for gas,vapor, and many mixed phase services,including dirty and/or wet applications. TheSeries 200 is available with effective orificeareas of 0.110 to 63.50 in2 [0.710 to 409.7 cm2],valve inlet sizes 1" to 10" [25 to 254 mm], set pressures from 25 to over 6000 psig [1.72 to over 413.7 barg], and continuousservice temperatures -423°F to +600°F [-253°C to +315°C].

Specifications• Non-flowing pilot.

• Replaceable main valve seat located onpiston maximize seat sealing ability.

• Pilot mounted on heavy duty bracket.

• Vertical pilot mounting.

• Externally adjustable blowdown.

• Options, such as auxiliary filter, spikesnubber, and emergency unloader mountedon main valve with heavy duty brackets.

• Field replaceable main valve nozzle.

• Lettered orifice valves meet API standard526 dimension requirements.

• Balanced design, proper valve operationand lift are unaffected by back pressure.Costly and fragile metal bellows are notrequired.

Features and Benefits • External, independent blowdown

adjustment: Provides easy, accurate andrepeatable settings. Reduces costly removalof valve and system downtime.

• ASME Section VIII Code Stamp: CertifiedNational Board capacities for gas serviceassures user of independent third party flowrate verification.

• Reduced maintenance cost: soft seatsgreatly extend service life, making costly andtime consuming metal seat lappingunnecessary.

• Suited for dirty or wet service: non-flowing pilot minimizes entrance of dirt andformation of hydrates in the pilot. Due tolow velocities within the pilot and supplytubing, most particles will drop outupstream of pilot inlet screen. Optionalcartridge type pilot filter is available forextremely dirty services.

• Increased system output: because of totalvalve tightness to at least 95 percent of setpressure, the system can be operated nearerset pressure without valve leakage, resultingin greater system throughput.

• Unique field test capability: this optionallows accurate set pressure verificationwith valve in service. No system isolationblock valve required.

• Reduced product loss and pollution: softseats for premium tightness before and afterrelief cycles.

• Rugged bracket pilot mounting: extremelyrigid mounting protects against vibrationand careless handling. Shake table proven.

• Full lift at set pressure: allows D.O.T.installation to be set higher than MaximumAllowable Operating Pressure (MAOP),resulting in increased system throughput.

• Remote sense option: available at noadded cost to the relief valve

OperationIn the normal closed position, full systempressure is sensed at the pressure pick-up inthe main valve inlet. This pressure istransmitted through the pilot and into themain valve dome (volume above the mainvalve piston). Because the piston seal area isgreater than the main seat sealing area, thenet force on the piston is downward, keepingthe valve tightly closed. The higher the systempressure, the greater the downward force onthe piston – exactly the opposite of directspring operated valves.

When the pilot senses set pressure, its reliefseat snaps open and the blowdown seatsnaps closed simultaneously, venting thedome pressure through the pilot relief seat to atmosphere. This allows the main valve toopen fully at set pressure.

The blowdown seat is held tightly closedduring the relief cycle until the desired systemblowdown is achieved, at which time theblowdown seat snaps open and the relief seatsnaps closed simultaneously. This fullyrepressures the dome to system pressure andcloses the main valve.

The valve reseat pressure is dependent uponthe lift of the spindle off the relief seat. Higherspindle lift results in more spring compressionand a higher spindle closing force stored inthe pilot spring. The higher the lift, the shorterthe blowdown (higher valve reseat pressure).The spindle lift and thus blowdown areexternally adjustable by raising or lowering theblowdown assembly of the pilot, thuschanging the spindle lift.

Series 200 Pop Action Safety Valve

Pressure Pressure

Dow

n Fo

rce

on M

ain

Valv

e Pis

ton

0 Set

Mai

n Va

lve

Pis

ton

Lift

0 Set

Closing

Opening

100% Lift

3% MinimumBlowdown



Series 200 Operations

Relieving position

Set PressureAdjustment

Relief Seat

Blowdown Seat

BlowdownAdjustment

Main Valve SeatPiston

Main Valve

Piston Seal

Dome

Pilot

100% of set

100% of set

System

100% of set

System

Dome

100% of set

0% Dome

PilotDischarge

Normal closed position



The Series 400 modulating valve, with non-flowing pilot, incorporates an advanceddesign in pilot operated valves. Under processconditions, both pilot and main valve can betight to as high as 98 percent of set pressure.The main valve lifts proportionally accordingto required flow (relief demand), restrictingproduct loss to only the mass required to berelieved to prevent process pressure fromexceeding the code allowance.

Well suited for gas and/or liquid services,including dirty and/or wet services. Themodulating action is strongly preferred forliquid relief because it minimzes thedestructive effects of “liquid hammer.”

Available with effective orifice areas of 0.110 to63.50 in2 [0.710 to 409.7 cm2] valve inlet sizes1" to 10" [25 to 254 mm], set pressurebetween 15 and 1480 psig [1.03 and 102.0barg], and continuous service temperaturesfrom -65°F to +600°F [-54°C to +315°C].


• Single point set pressure adjustment.

• Replaceable main valve seat, located onpiston to maximize seat sealing ability.

• Feedback mechanism in pilot, independentof primary pressure sensing mechanism, toensure smooth modulation of main valve.

• Set point indicator button for field testcapability.


• Lettered orifices meet API standard 526dimension requirements.

Features and Benefits• Unique field test capability: allowsaccurate set pressure verification with valvein service. No system isolation valve orrupture disc required. All field testconnections are provided with an indicatorfor accurate and easy set pressure testing.

• Reduced product loss and pollution:soft seats for premium tightness before and after relief cycles. Modulating actionrelieves minimum product to preventoverpressure.

• ASME Section VIII Code Stamp: CertifiedNational Board capacities for both gas andliquid service assures user of independentthird party flow rate verification.

• Non-flowing pilot: minimizes entrance ofdirt and formation of hydrates in pilot. Dueto low velocities within the pilot and supplytubing, most particles will drop outupstream of pilot inlet screen. Optionalcartridge type pilot filter is available forextremely dirty services.

• Rugged bracket pilot mounting:extremely rigid mounting protecting againstvibration and careless handling. Shake tableproven.

• Reduced noise: modulating actionminimizes flow and resultant noise duringnormal system upset, reducing noiseabatement costs.

• Increased system output: because ofvalve tightness to 98 percent of setpressure, the system can operate near setpressure without valve leakage, resulting ingreater system throughput.

• Reduced maintenance costs: soft seatsgreatly extend service life, making costlyand time-consuming metal seat lappingunnecessary.

• Ease of adjustment: single adjustment for set pressure allows accurate anddependable setting.

• Balanced design: proper valve operationand lift are unaffected by back pressure.Costly and fragile metal bellows are notrequired.

• Minimal blowdown: as the valve reseatsslightly below set pressure.

• Remote sense option: available at noadded cost to the relief valve.

OperationWith no system pressure, the pilot inlet seat isopen and the outlet seat is closed. As pressureis admitted to the main valve inlet, it entersthe pilot through a filter screen. Pressure isthen transmitted through passages in thefeedback piston, past the inlet seat, into themain valve dome, which causes the mainvalve piston to remain closed.

As system pressure increases and approachesvalve set pressure, it acts upward on thesense element (diaphragm/piston), with thefeedback piston also moving upward to closethe inlet seat. This seals in the main valvedome pressure, at this point because theoutlet seat is also closed. A small, furtherincrease in system pressure opens the outletseat, partially venting the main valve domepressure. This reduced dome pressure acts onthe unbalanced feedback piston to reducefeedback piston lift, tending to “lock in” thedome pressure. Thus, at any stable inletpressure, there will be no pilot flow (i.e., zeroleakage).

As inlet pressure rises above set pressure,dome pressure reduction will providemodulating action of the main valve pistonproportional to the process upset. Thespool/feedback piston combination will move,responding to system pressure, to alternatelyallow pressure in the main valve dome toincrease or decrease. This moves the mainvalve piston to the exact lift that will keepsystem pressure constant at the required flow.Full main valve lift, and therefore full flow, isachieved with relatively little overpressure. Assystem pressure decreases below setpressure, the feedback piston movesdownward and opens the inlet seat to admitsystem pressure to the dome. This closes themain valve. The pilot exhaust is alwaysdischarged to the main valve outlet.

Series 400 Modulating Safety Relief Valve



Series 400 Specifications

Below Set Pressure With Main Valve Closed

Pressure

Mai

n Va

lve

Pis

ton

Lift

Set

Closing

100% Lift

Opening

Pressure

Dow

n Fo

rce

on M

ain

Valv

e Pis

ton

0 Set

95% Set Pressure,Minimum

Set PressureAdjustment

Sense Diaphragm

Tubed to MainValve Outlet

OutletSeat

InletSeat

Feedback Piston

Piston

Main Valve

Dome



At or Slightly Above Set Pressure Main Valve Partially Open and Modulating

Tubed toMain ValveOutlet


Above Set Pressure With Main Valve Fully Open

Tubed toMain ValveOutlet



The Anderson Greenwood Series 500 is aunique soft seated safety relief valve designedto handle higher temperatures. It was createdwith a specific design objective: to decreasethe leakage associated with metal-seatedsafety relief valves under extreme operatingtemperature conditions.

The result is a modulating, soft-seated, pilotoperated valve offering premium tightnesswith the ability to handle temperatures from -65°F to 515°F [-54°C to 268°C] and a setpressure range of 15 to 720 psig [1.03 to 49.6barg].

The soft seat in the Series 500 main valve ismore resistant to particulate damage than ametal seat, has a longer service life, and canbe quickly replaced while the valve bodyremains installed in the line.

Its unique design enables the main valve to betight at pressures up to set point. Afterrelieving and reseating, it stays bubble-tight,cycle after cycle. Applications for the Series500 include hot water, steam (ASME SectionVIII Unfired Pressure Vessels), hothydrocarbon vapors or liquids, and corrosiveservices.

Specifications• Durable but replaceable Teflon® seat in mainvalve, located on piston to maximize seatsealing ability. A totally captive seat designeliminates seat extrusion at elevatedtemperatures.

• Teflon®/PEEK seals throughout main valveand pilot for optimum chemical resistance,such as needed for various chemicals inboiler feed water.

• Dual diaphragm pilot for minimum firstleak-to-relief pressure.

• Single point set pressure adjustment.

• Set point indicator button option for fieldtest capability.



Features and Benefits• Reduced product loss and pollution:soft seats for premium tightness before and after relief cycles.

• All plastic soft goods: plastic seats andseals provide chemical compatibility withthe lading fluid.

• Increased system output: because of total valve tightness to at least 95 percentof set pressure, the system can be operatednearer to set pressure without valveleakage. The result is greater systemproduction capability.

• Reduced maintenance costs: resilientseats greatly extend service life. Costly and time consuming metal seat lapping isunnecessary.

• Balanced design: proper valve operationand lift are unaffected by back pressure.Costly and fragile metal bellows are notrequired.

• ASME Section VIII Stamp: CertifiedNational Board capacities for steam, gases,and liquids assures user of independentthird party flow rate verification.

• Unique field test capability: allowsaccurate set pressure verification with valvein service. No system isolation valve isrequired. Single indicator button is availablefor accurate and easy verification of setpressure.

• Reduced noise: modulating actionminimizes flow and resultant noise duringnormal system upset reducing noiseabatement costs.

• Ease of adjustment: adjustment for setpressure allows accurate and dependablesetting.

• Remote sense option: available at noadded cost to the relief valve.

OperationIn normal operation, the system pressure actson the area contained by the main valve seatat the bottom of the free-floating differentialarea piston and on the top of the piston. Sincethe top of the piston is larger than the bottom(seat area), there is a large downward netforce holding the piston closed. Under staticconditions, the seating force increases as thesystem pressure increases and approaches setpoint.

When the set pressure is reached, the pilotopens and partially depressurizes the dome.This reduces the force on the top of the pistonto the point where the upward force on theseat area can overcome the reduceddownward loading. This causes the piston tolift, resulting in modulated flow through themain valve.

When the relief demand has been satisfied,the pilot closes, full system pressure isdiverted to the dome, and the piston movesdownward, closing the main valve. The pilotexhaust is always discharged to the mainvalve outlet

A patented, pressure responsive piston dragsystem in the larger Series 500 valves avoidsresonant chatter and the severe valve and/orpiping damage chatter can cause. The wedgering creates a pressure-actuated slidingfriction force between the piston and liner,preventing resonant chatter.





Pressure

Mai

n Va

lve

Pis

ton

Lift

Set

Closing

100% Lift

Opening

Pressure

Dow

n Fo

rce

on M

ain

Valv

e Pis

ton

0 Set


Pilot

Pilot DischargePiped to MainValve Outlet

Field TestConnection(optional)

Dome

DomePressureLiner

Piston Seal

Piston Seal

Seal

Sense Pickup

Piston

Wedge Ring



The Series 700 pilot operated safety valve isunique as an all metal seated pilot and mainvalve. This extends the use of pilottechnology to temperatures up to 1000°F[538°C]. The valve is suitable for steamand/or gas service. The Series 700 isavailable with effective areas of 0.503 to26.00 in2 [3.245 to 167.7 cm2].


• Vertical pilot mounting.

• Externally adjustable blowdown.

• Field replaceable nozzle.

• ANSI pressure class 150, 300 and 600.

• All metal seats/seals.

Features and Benefits• All metal-to-metal seating surfaces:Trim specifically designed for hightemperature service, plus enhancedchemical compatibility.

• Patented flexible disc: Reduces impactwear while increasing seat tightness.

• Dampened trim: Dampening chamberscontrol the opening and closing response,increasing valve cycle life.

• Non-flowing pilot: Reduces seat wearand minimizes entrance of dirt andparticulates in the pilot.

• An appropriate remote sense option:available at no added cost to the reliefvalve. Consult your sales representative.

• Adjustable blowdown: Blowdown canbe adjusted between 3% and 15% byturning the blowdown adjustment sleeve.Upper and lower blowdown rings andpins are not required, saving time, partsand costs.

• ASME Section VIII Code Stamp:Certified National Board capacities forsteam and gas service assures user ofindependent third party flow rateverification.

• Unique field test capability: this optionallows accurate set pressure verificationwith valve in service. No system isolationblock valve or rupture disc required.

700 Manifolded dual pilots*(optional)• For maximum operating reliability, it isrecommended to use dual pilots withbuilt-in switching mechanism. Themanifold dual pilot provides “on line”spare pilot.

• The safety lock allows the operator toisolate only one pilot while the active pilotprotects the system.

• In-service testing and replacement of pilotunder operating condition with fullsystem protection.

* Patented

Note: Manifolded single pilot also available.

Steam serviceIn the closed position, when operatingbelow set point, the valve internal pressureis equal to the system pressure and thepiston is pressure balanced.

System pressure is directed to three keyareas of the valve:

1. The dome, via the dome charging orifice;

2. The pilot, via the integral pressuresensing connection and the external pilotinlet sensing line; and

3. The unloader, via the sensing lineconnections from the pilot dome and theintegral sensing connection from thedome through the cap.

The seating force is produced by systempressure acting on the internal exposed discsurface area. As system pressure increases,the seating force increases providingmaximum seat tightness up to set pressurewhen the valve opens.

When system pressure reaches set pointand overcomes the pilot spring force, thepilot pops open and sets into motion fourkey reactions:

1. The normally open reseat piston movesinto full lift and closes against theblowdown seat preventing further systempressure from flowing through the pilot.This is the non-flowing pilot feature.

2. Unloader dome pressure is ventedthrough the pilot vent to atmosphere.With the internal pilot pressure relieved,the pilot spring is now sensing systemoverpressure in the pilot inlet sensing linevia the spindle-disc-spacer rod-reseatpiston.

3. The venting of unloader dome pressurecreates a pressure imbalance which movesthe unloader piston to the open position.Main valve dome pressure is vented, via theunloader, into the main valve outlet, and themain valve dome pressure drop backseatsthe drain plunger, preventing systempressure from charging the dome.

4. The depressurisation of the piston domepressure produces a pressure imbalancewhich moves the piston/disc assembly off the nozzle seat. As the media begins toexit through the valve outlet, thedownstream disc surface area is subjectedto system overpressure and the piston/discassembly goes into full lift instantaneously.

When system overpressure has been fullyrelieved, the pilot spring closes the pilot disconto the pilot seat. The main valve nowgoes into the reseat phase, setting intomotion the above mentioned four keyreactions in reverse:

1. The pilot disc-spacer rod pushes thereseat piston off the blowdown seat andthe internals of the pilot spring-spindle-disc assembly are once again sensingsystem pressure.

2. With the pilot closed and the pilotdischarge vent isolated, system pressureis now directed to the unloader dome.

3. Recharging the unloader dome causesthe unloader piston to close and stopsthe depressurisation of the piston domepressure.

4. System pressure is now charging thepiston dome via the dome chargingorifice. The pressure imbalance is nowclosing the piston/disc assembly.

With the main disc closed and outletpressure on the disc eliminated, the systempressure acting on the internal exposed areaof the disc once again re-establishesmaximum seat tightness.

Series 700 Pop Action Safety Valve



Dual Pilots

Manifold

Changeover valves

Safety lock

Field test connection

Air, Gas or Vapor ServiceFor air, gas and vapor service, the assembly ofthe main valve and pilot is modified for valves4" x 6" and smaller as follows:

1. The unloader is deleted and the pilot domeconnected directly to cap.

2. The unloader discharge port in the valveoutlet is plugged.

3. The dome charging orifice in the piston isdeleted.

4. A snubber is installed at the pilot inlet todampen system pulsations.

The operation of the main valve and pilot inair, gas and vapor service is the same as thesteam valve.

The pilot is able to vent and depressurize themain dome with sufficient speed to provideproper opening and closing performancewithout the use of an unloader.

For mixed phase flow, contact your salesrepresentative to determine if unloader isrequired.


Class 300 Design Scope

Pressure and Temperature Rating1000 [538]

800[427]600[316]400[204]200[93]

00 200

[13.8]400

[27.6]600

[41.4]800

[55.2]

MaterialCode

S2WCB

S1WCB

°F [°

C]

psig [barg]

S3WC6



800[427]

600[316]

400[204]200[93]

00 100

[6.9]200

[13.8]300

[20.7]400

[27.6]

MaterialCode

S2WCB

S1WCB

°F [°

C]

psig [barg]


800[427]

600[316]

400[204]

200[93]

00 200

[13.8]400

[27.6]600

[41.4]800

[55.2]

MaterialCode

S2WCB

S1WCB

°F [°

C]

psig [barg]

S3WC6

1000[69.0]

1200[82.8]




psig [barg]

psig [barg]

psig [barg]

°F [°C]

°F [°C]

°F [°C]

Series 700 Operation

Normal Closed Position

Pilot

PilotVent

Pilot Disc

Spindle

System Pressure

System Pressure

Dome

Unloader

Unloader Dome

Disc

Nozzle

Piston

Unloader Piston

Drain Plunger

Main ValveDome Charging Orifice

Pressure Sensing (Integral)

Relief Seat(Closed)

Blowdown Seat(Open)

Relief Seat(Open)

Spacer

Reseat Piston

Blowdown Seat (Closed)



Steam:2" x 3" to 8" x 10"

Air/Gas/Vapor:6" x 8" to 8" x 10"

Relieving Position


Normal Closed PositionFor 8" x 10" valves the unloader is utilized to optimize the performance.

Air/Gas/Vapor2" x 3" to 4" x 6"

Pilot

PilotVent

System Pressure

Dome

Disc

Nozzle

Piston

Drain Plunger

Main Valve

Snubber

Pressure Sensing (Integral)

Relief Seat(Closed)

Blowdown Seat(Open)



The Series 800 modulating valve utilizes themost advanced design in pilot operated valves.The non-flowing, modulating pilot can be setat pressures up to 6170 psig [425.52 barg].Under these process conditions, the pilot andmain valve can be tight up to 98 percent of setpressure.

Since the pilot is modulating, the main valvelifts proportionally according to required flow(relief demand), restricting product loss to themass required to prevent the process pressurefrom exceeding the code allowance. The pilotprovides stable lift even on hard liquidsystems due to its unique trim. The 800 Seriescan also be used in liquids, gases, or mixedphase lading fluids, including dirty and/or wetservices.

The Series 800 valve is available with thefollowing: effective orifice areas of 0.110 to9.489 in2 [0.710 to 61.21 cm2], valve inlet sizes1" to 4" [25 to 100 mm], set pressures between1481 and 6170 psig [102.13 and 425.52 barg],and continuous temperatures from -65°F to+600°F [-54°C to +315°C].


• Single-point set pressure adjustment.

• Replaceable main valve seat, located onpiston to maximize seat sealing ability.

• Feedback mechanism in pilot, independentof primary pressure sensing mechanism, toensure smooth modulation of main valve.

• Set point indication for field test capability.



Features and Benefits• High set pressure capability: Providesmodulating, non-flowing pilot valveperformance to 6170 psig [425.42 barg].

• Unique field test capability: Allowsaccurate set pressure verification with valvein service with minimal amount of test gas.All field test connections are provided withan indication for accurate and easy setpressure testing.

• Reduced product loss and pollution:Soft seats for premium tightness before and after relief cycles. Modulating actionrelieves minimum product to preventoverpressure.

• ASME Section VIII Code Stamp: CertifiedNational Board capacities for both gas andliquid service assures user of third partyflow rate verification.

• Non-flowing pilot: Minimizes entrance ofdirt and formation of hydrates in pilot. Dueto low velocities within the pilot and supplytubing, most particles will drop outupstream of pilot inlet screen. Optionalcartridge type pilot filter is available forextremely dirty services.

• Rugged bracket pilot mounting:Extremely rigid mounting protects againstvibration and careless handling.

• Reduced noise: Modulating actionminimizes flow and resultant noise duringnormal system upset, reducing noiseabatement costs.

• Increased system output: Because of valve tightness to 98 percent of setpressure, the system can operate near set pressure without valve leakage,resulting in greater system throughput.

• Ease of adjustment: Single adjustment forset pressure allows accurate and dependablesetting.

• Reduced maintenance costs: Soft seatsgreatly extend service life, making costlyand time-consuming metal seat lappingunnecessary.

• Balanced design: Proper valve operationand lift are unaffected by back pressure.Costly and fragile metal bellows are notrequired.

OperationWith no system pressure, the pilot inlet seat isopen and the outlet seat is closed. As pressureis admitted to the main valve inlet, it entersthe pilot through a filter screen. Pressure isthen transmitted through passages in thefeedback piston, past the inlet seat, into themain valve dome, which causes the mainvalve piston to remain closed.

As system pressure increases and approachesvalve set pressure, it acts upward on thesense O-ring seal, with the feedback pistonmoving upward to close the inlet seat. Thisseals in the main valve dome pressure since,at this point, the outlet seat is also closed. A small, further increase in system pressureopens the outlet seat, partially venting themain valve dome pressure. This reduced domepressure acts on the unbalanced feedbackpiston to reduce feedback piston lift, tendingto “lock in” the dome pressure. Thus, at anystable inlet pressure, there will be no pilotflow (i.e., zero leakage).

As inlet pressure rises above set pressure,dome pressure reduction will providemodulating action of the main valve pistonproportional to the process upset. Thespool/feedback piston combination will move,responding to system pressure, to alternatelyallow pressure in the main valve dome toincrease or decrease. This moves the mainvalve piston to the exact lift that will keepsystem pressure constant at the required flow.Full main valve lift, and therefore full flow, isachieved with relatively little overpressure. As system pressure decreases below setpressure, the feedback piston movesdownward and opens the inlet seat to admitsystem pressure to the dome. This closes the main valve. The pilot exhaust is alwaysdischarged to the main valve outlet.




Pressure

Mai

n Va

lve

Pis

ton

Lift

Set

Closing

100% Lift

Opening

Pressure

Dow

n Fo

rce

on M

ain

Valv

e Pis

ton

0 Set




Piston InletSeat

Sense Seal

Main Valve

Dome


Piston OutletSeat





At or Slightly Above Set Pressure Main Valve Partially Open and Modulating

FeedbackPiston




Above Set Pressure With Main Valve Fully Open

The Iso-Dome accessory for the 400 pilotprovides protection of the critical pilot internalsfrom the process media. The pilot is actuated by the process fluid and is ASME Section VIIICode stamped for gas and liquid service. TheIso-Dome pilots are available with effectiveorifices areas of 0.110 to 63.50 in2 [0.710 to409.7 cm2 ], valve inlet sizes 1" to 10" [25 to 254 mm], set pressure between 15 and2220 psig [1.03 and 153 barg], and continuousservice temperature from -65°F to +500°F [-54°C to +260°C].

Features and Benefits• Critical pilot internals and main valve

dome protected from process media:Expands the application of pilot operatedvalve technology.

• Valve is fail-safe: Meets ASME coderequirements.

• Allows system operating pressure to be near set pressure: SRV tightness ismaintained, resulting in greater systemthroughput.

• All adjustments are factory sealed:Just add the clean gas supply for simpleand inexpensive field installation.

• Modulating action: Minimizes fugitiveemissions, product release, product loss,and noise.

• Valve operation insensitive to backpressure: Costly and fragile metal bellowsnot required.

• Unique field test capability: Set pressuremay be verified while valve remains inservice protecting the system. No systemisolation valve or rupture disc required.

OperationProcess media enters the main valve and isported to the pilot sense diaphragm. Themotive fluid for the pilot and main valve istypically nitrogen or air (clean gas supply) andis ported into the seating areas of the pilot andthe main valve dome. This clean gas supply isregulated to provide pressure into the pilotand main valve at slightly below the setpressure of the POPRV.

In the closed position, the downward force on the piston in the main valve provided bythe clean gas supply exceeds the upwardforce on the piston developed by the processmedia. At just below set pressure, it is thestatic pressure of the process media thatcompresses the pilot spring via the sensediaphragm. As the process media pressureincreases, the upward movement of the sensediaphragm and feedback piston closes thepilot inlet seat. A small, further increase inprocess media pressure opens the outlet seat.The clean gas supply (motive fluid) nowexhausts from the main valve dome via thepilot vent. This reduced dome pressure actson the unbalanced feedback piston lift, and“locks in” dome pressure. Thus at any stableinlet process media pressure there will be nopilot flow. This conserves the clean gas supplyvolume to provide multiple valve cycles ifnecessary.

As inlet pressure rises above set pressure,further dome pressure reduction will modulatethe main valve piston proportional to theprocess media upset. The feedback piston will move, responding to the process mediapressure to exhaust or supply the main valvedome with the clean motive fluid. This putsthe main valve piston in the correct position to relieve only that process media needed tosatisfy the overpressure.

As the process media pressure decreasesbelow set pressure, the feedback pistonmoves downward and opens the inlet seat to admit the clean gas supply into the mainvalve dome. This closes the main valve.

The process media porting to the pilot remainsa static pressure at all times during thisopening and closing operation. The internalseating areas of the pilot and the main valvedome are never exposed to this process mediaat any time.



Iso-Dome Series 400 Valve



Iso-Dome Series 400 Valve Operation

Pilot

PilotVent

OutletSeatRegulator (supplied by Anderson

Greenwood, mounted on PRV)

Clean Gas Supply (N2, Air, etc.)(supplied by user)

Clean Gas Supply

Process Media

Dome

Set Pressure Adjustment

Pilot Spring

Sense Diaphragm

Feedback Piston

Inlet Seat

Piston

Check Valve

Main Valve


Valves are selected on the basis of their ability to meet an expected relieving condition, flowinga sufficient amount of fluid to prevent excessive pressure increase. This means that the size ofthe valve orifice must be calculated taking the required flow, performance characteristics, ladingfluid properties, and other factors into consideration.

The sizing procedure presented utilizes the recommended practice of API 520 Part I. The valveorifice areas and nozzle discharge coefficients shown are effective values in that they are notspecific to a particular valve type. The use of these effective orifice areas and effectivenozzle discharge coefficients will always allow for the selection of a valve orifice areathat will meet or exceed the required capacity.

The calculation of the actual certified valve capacity can be performed with the AndersonGreenwood sizing program. Our sizing program is available for download athttp://sizing.tycovalves.com/

To select the minimum required orifice area that will flow the required capacity of the systemyou wish to protect, please refer to the following information which appears in this section:

1. Sizing Formulas

2. Correction Factors

3. Valve Orifice Areas

Once you have determined the required orifice area for your service conditions, refer to Part 3,Ordering (page 29), to select a specific valve model number.

How to size a valve



Sizing Formulas

Formula symbols

Symbol Description English Units Metric Units

A Calculated Orifice Area in2 cm2

V Required Capacity, Gas SCFM Nm3/h

VL Required Capacity, Liquid U.S. gpm m3/hW Required Capacity, Gas or Steam lb/h kg/h

G Specific Gravity — —M Molecular Weight (M = 29 x specific gravity) — —

T Relief Temperature, (°R = °F + 460°; °K = °C + 273) °R °KZ Compressibility Factor (if unknown, assume Z = 1.0) — —

Cpk Ratio of Specific heats (k = –––– ) — —

CvC Gas Constant (if unknown, assume C = 315 for English, 239 for Metric) (page 23) —

Kd Effective Nozzle Coefficient for 90% of Actual Capacity (page 28) — —Ks Superheat Correction Factor (pages 26 - 27) — —

PSet Pressure psig bargValve Inlet Flowing Pressure

P1 (P1 = P + Allowable Overpressure – Inlet Pressure Loss + Atmospheric Pressure) psia bara

P2 Valve Outlet Flowing Pressure psia baraKb Back Pressure Factor (pages 24 - 25) — —

PAValve Inlet Flowing Pressure psig barg(PA = P + Allowable Overpressure – Inlet Pressure Loss)

PB Valve Outlet Flowing Pressure psig barg

KCCombination correction factor for installations with rupture disc upstream of poprv.

–– __(Kc = 1.0 w/no rupture disk, Kc = 0.9 when no combination factor is known)

Gas/vapor flow

English Units Metric Units

W TZ W TZ A = –––––––––––––––– A = ––––––––––––––––

CKdP1KbKc M CKdP1KbKc M

orV MTZ V MTZ

A = ––––––––––––––– A = ––––––––––––––––6.32 CKdP1KbKc 22.42 CKdP1KbKc

Steam flow


W WA = ––––––––––––– A = ––––––––––––––

51.5KdP1KsKb 52.5KdP1KsKb

Liquid flow


VL G VL GA = –––––––––––––– A = –––––––––––––––––

38Kd PA – PB 5.094Kd PA – PB



Values of M, k, and C for representative gases and vaporsC C

M k Gas GasMolecular Specific Constant Constant

Gas or Vapor Weight Heat Ratio (English) [Metric]

Acetylene (C2H2) 26 1.26 343 261Air 29 1.40 356 270

Ammonia (NH3) 17 1.31 348 264Argon (Ar) 40 1.67 378 287

Benzene (C6H6) 78 1.12 329 250Butadiene (C4H6) 54 1.12 329 250

Carbon Dioxide (CO2) 44 1.28 345 262Carbon Monoxide (CO) 28 1.40 356 270

Ethane (C2H6) 30 1.19 336 255Ethylene (C2H4) 28 1.24 341 259

Freon 22 86.5 1.18 335 246Helium (He) 4 1.66 377 286

Hexane (C6H14) 86 1.06 322 245Hydrogen (H2) 2 1.41 357 271

Hydrogen Sulphide (H2S) 34 1.32 349 265Methane (CH4) 16 1.31 348 264

Methyl Mercaptan (CH4S) 48.1 1.20 337 256n-Butane (C4H10) 58 1.09 326 247

Natural Gas (SF = 0.60) 17.4 1.27 344 261Nitrogen (N2) 28 1.40 356 270

Oxygen (O2) 32 1.40 356 270Pentane (C5H12) 72 1.97 323 303

Propane (C3H8) 44 1.13 330 251Propylene (C3H6) 42 1.15 332 252

Propylene Oxide (C3H6O) 58.1 1.21 338 257Steam 18 1.31 348 264

Sulphur Dioxide (SO2) 64 1.29 346 263VCM (C3H3CI) 62.5 1.18 335 255

Sizing



Sizing

k C (English) C [Metric]

1.00 315 2391.02 318 241

1.04 320 2431.06 322 245

1.08 324 2461.10 327 248

1.12 329 2501.14 331 251

1.16 333 2531.18 335 254

1.20 337 2561.22 339 258

1.24 341 2591.26 343 261

1.28 345 2621.30 347 263

1.32 349 2651.34 351 266

1.36 352 2681.38 354 269

1.40 356 2701.42 358 272

1.44 359 2731.46 361 274

1.48 363 2761.50 364 277

k C (English) C [Metric]

1.52 366 2781.54 368 279

1.56 369 2801.58 371 282

1.60 372 2831.62 374 284

1.64 376 2851.66 377 286

1.68 379 2871.70 380 289

1.72 382 2901.74 383 291

1.76 384 2921.78 386 293

1.80 387 2941.82 388 295

1.84 390 2961.86 391 297

1.88 392 2981.90 394 299

1.92 395 3001.94 397 301

1.96 398 3021.98 399 303

2.00 400 3042.02 401 305

Gas constant, C



k = 1.0

k = 1.2

k = 1.6

k = 1.8

k = 2.0

k = 1.4

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Bac

k Pre

ssur

e Fa

ctor

, Kb

P2/P1 = Absolute Pressure Ratio at Valve Outlet Connection

Back pressure correction factor for Series 200, 400, 500, and 800

Sizing

Notes: 1. The curves above will vary from one size of valve and orifice combination to the other. The curves shown on this page represent the most conservativeback pressure correction factor for all series of valves (except Series 700) shown in this catalog. The sizing software will utilize the actual back pressurecorrection factor for the valve selected.

2.When capacity reduction is represented by the above curves, it is due to obtaining critical pressure or higher at the valve’s nozzle exit for full lift valves orcurtain area for restricted lift valves.

P2

P1



K = 1.6

K = 1.8

K = 2.0

K = 1.0

K = 1.2

K = 1.4

P2/P1 = Absolute Pressure Ratio at Valve Outlet Connection

Sizing

1.0

0.98

0.96

0.94

0.92

0.90

0.88

0.86

0.4 0.45 0.50 0.55 0.60 0.65 0.70

k = 1.0

k = 1.2

k = 1.4

k = 1.6

k = 1.8

k = 2.0

Back pressure correction factor for Series 700

Notes: 1. The curves above are the actual correction values for all series 700 configurations. 2. When capacity reduction is represented by the above curves it is due to obtaining critical pressure or higher at the valve’s nozzle exit.

Bac

k Pre

ssur

e Fa

ctor

, Kb

P2

P1



K = 1.0

K = 1.2

K = 1.4

K = 1.6

K = 1.8

K = 2.0

Steam super heat correction factor, KsSet Saturated Total Steam Temperature °F [°C]

Pressure Steam 280 300 320 340 360 380 400 420 440 460 480 500 520 540 560psig [barg] Temp. °F [°C] [138] [149] [160] [171] [182] [193] [205] [216] [227] [238] [249] [260] [271] [282] [293]

15 [1.03] 250 [121] 1.00 1.00 1.00 .99 .99 .98 .98 .97 .96 .95 .94 .93 .92 .91 .9020 [1.38] 259 [126] 1.00 1.00 1.00 .99 .99 .98 .98 .97 .96 .95 .94 .93 .92 .91 .90

40 [2.76] 287 [142] 1.00 1.00 1.00 .99 .99 .98 .97 .96 .95 .94 .93 .92 .91 .9060 [4.14] 308 [153] 1.00 1.00 .99 .99 .98 .97 .96 .95 .94 .93 .92 .91 .90

80 [5.52] 324 [162] 1.00 1.00 .99 .99 .98 .97 .96 .94 .93 .92 .91 .90100 [6.90] 338 [170] 1.00 1.00 .99 .98 .97 .96 .95 .94 .93 .92 .91

120 [8.27] 350 [177] 1.00 1.00 .99 .98 .97 .96 .95 .94 .93 .92 .91140 [9.65] 361 [183] 1.00 1.00 .99 .98 .96 .95 .94 .93 .92 .91

160 [11.0] 371 [188] 1.00 1.00 .99 .98 .97 .95 .94 .93 .92 .91180 [12.4] 380 [193] 1.00 .99 .98 .97 .96 .95 .93 .92 .91

200 [13.8] 388 [198] 1.00 .99 .99 .97 .96 .95 .93 .92 .91220 [15.2] 395 [202] 1.00 1.00 .99 .98 .96 .95 .94 .93 .92

240 [16.6] 403 [206] 1.00 .99 .98 .97 .95 .94 .93 .92260 [17.9] 409 [210] 1.00 .99 .98 .97 .96 .94 .93 .92

280 [19.3] 416 [213] 1.00 1.00 .98 .97 .96 .95 .93 .92300 [20.7] 422 [217] 1.00 .99 .98 .96 .95 .93 .92

350 [24.1] 436 [225] 1.00 1.00 .99 .96 .96 .94 .93400 [27.6] 448 [231] 1.00 .99 .96 .96 .95 .93

450 [31.0] 460 [238] 1.00 .96 .96 .96 .94500 [34.5] 470 [243] 1.00 .96 .96 .96 .94

550 [37.9] 480 [249] .97 .97 .97 .95600 [41.4] 489 [254] .97 .97 .97 .97

650 [44.8] 497 [258] 1.00 .99 .97700 [48.3] 506 [263] 1.00 .99 .97

750 [51.7] 513 [267] 1.00 1.00 .98800 [55.2] 520 [271] 1.00 .99

850 [58.6] 527 [275] 1.00 .99900 [62.1] 533 [278] 1.00 1.00

950 [65.5] 540 [282] 1.001000 [69.0] 546 [286] 1.00

1050 [72.4] 552 [289] 1.001100 [75.9] 558 [292]

1150 [79.3] 563 [295]1200 [82.7] 569 [298]

Sizing



Sizing

Steam super heat correction factor, Ks

Set Saturated Total Steam Temperature °F [°C]Pressure Steam 580 600 620 640 660 680 700 720 740 760 780 800 900 1000 1100

psig [barg] Temp. °F [°C] [305] [316] [326] [338] [349] [360] [371] [382] [393] [405] [416] [427] [482] [537] [593]

15 [1.03] 250 [121] .89 .88 .87 .86 .86 .85 .84 .83 .83 .82 .81 .81 .78 .75 .7220 [1.38] 259 [126] .89 .88 .87 .86 .86 .85 .84 .83 .83 .82 .81 .81 .78 .75 .72

40 [2.40] 287 [142] .89 .88 .87 .87 .86 .85 .84 .84 .83 .82 .82 .81 .78 .75 .7260 [4.14] 308 [153] .89 .88 .87 .87 .86 .85 .84 .84 .83 .82 .82 .81 .78 .75 .72

80 [5.52] 324 [162] .89 .89 .88 .87 .86 .85 .84 .84 .83 .82 .82 .81 .78 .75 .72100 [6.90] 338 [170] .90 .89 .88 .87 .86 .85 .85 .84 .83 .82 .82 .81 .78 .75 .72

120 [8.27] 350 [177] .90 .89 .88 .87 .86 .85 .85 .84 .83 .82 .82 .81 .78 .75 .72140 [9.65] 361 [183] .90 .89 .88 .87 .86 .85 .85 .84 .83 .82 .82 .81 .78 .75 .72

160 [11.0] 371 [188] .90 .89 .88 .87 .86 .86 .85 .84 .83 .82 .82 .81 .78 .75 .72180 [12.4] 380 [193] .90 .89 .88 .87 .86 .86 .85 .84 .83 .82 .82 .81 .78 .75 .72

200 [13.8] 388 [198] .90 .89 .88 .87 .86 .86 .85 .84 .83 .83 .82 .81 .78 .75 .72220 [15.2] 395 [201] .91 .90 .89 .88 .87 .86 .85 .84 .8 .83 .82 .81 .78 .75 .72

240 [16.6] 403 [206] .91 .90 .89 .88 .87 .86 .85 .84 .84 .83 .82 .81 .78 .75 .72260 [17.9] 409 [209] .91 .90 .89 .88 .87 .86 .85 .85 .84 .83 .82 .81 .78 .75 .72

280 [19.3] 416 [213] .91 .90 .91 .88 .87 .86 .85 .85 .84 .83 .82 .82 .78 .75 .72300 [20.7] 422 [217] .91 .90 .89 .88 .87 .86 .86 .85 .84 .83 .82 .82 .78 .75 .72

350 [24.1] 436 [224] .92 .91 .90 .89 .88 .87 .86 .85 .84 .83 .83 .82 .78 .76 .72400 [27.6] 448 [231] .92 .91 .90 .89 .88 .87 .86 .85 .84 .84 .83 .82 .79 .76 .72

450 [31.0] 460 [238] .93 .92 .91 .89 .88 .87 .86 .86 .85 .84 .83 .82 .79 .76 .72500 [34.5] 470 [243] .93 .92 .91 .90 .89 .88 .87 .86 .85 .84 .83 .82 .79 .76 .73

550 [37.9] 480 [249] .94 .92 .91 .90 .89 .88 .87 .86 .85 .84 .83 .82 .79 .76 .73600 [41.4] 489 [254] .94 .93 .92 .90 .89 .88 .87 .86 .85 .84 .84 .83 .79 .76 .73

650 [44.8] 497 [258] .95 .94 .92 .91 .90 .89 .87 .86 .86 .85 .84 .83 .79 .76 .73700 [48.3] 506 [263] .96 .94 .93 .91 .90 .89 .88 .87 .86 .85 .84 .83 .79 .76 .73

750 [51.7] 513 [267] .96 .95 .93 .92 .90 .89 .88 .87 .86 .85 .84 .83 .79 .76 .73800 [55.2] 520 [271] .97 .95 .94 .92 .91 .90 .88 .87 .86 .85 .84 .84 .80 .76 .73

850 [58.6] 527 [275] .98 .96 .94 .93 .92 .90 .89 .88 .87 .86 .85 .84 .80 .76 .73900 [62.1] 533 [278] .99 .97 .95 .93 .92 .90 .89 .88 .87 .86 .85 .84 .80 .77 .73

950 [65.5] 540 [282] .99 .97 .95 .94 .92 .91 .89 .88 .87 .86 .85 .84 .80 .77 .731000 [69.0] 546 [286] .99 .98 .96 .94 .93 .91 .90 .89 .87 .86 .85 .84 .80 .77 .73

1050 [72.4] 552 [289] 1.00 .99 .97 .95 .93 .92 .90 .89 .88 .87 .86 .85 .80 .77 .731100 [75.9] 558 [292] 1.00 .99 .98 .95 .94 .92 .91 .89 .88 .87 .86 .85 .81 .77 .73

1150 [79.3] 563 [295] 1.00 .99 .98 .96 .94 .92 .91 .90 .88 .87 .86 .85 .81 .77 .731200 [82.7] 569 [298] 1.00 .99 .98 .97 .95 .93 .91 .90 .89 .87 .86 .85 .81 .77 .73



Sizing

Effective API orifice area, in2 [cm2]Types 243, 443, 843 Types 2631, 4631, 8631

Valve Size Types 253, 453, 853 Type 249 Type 2691

in [mm] Type 259 Type 546 Type 5661 Type 727

1 x 2 0.110 (“D”) [0.710][25 x 50]

0.307 (“F”) [1.981] — —11/2 x 2 0.196 (“E”) [1.265][40 x 50]11/2 x 2[40 x 50]

0.503 (“G”) [3.245]2 0.785 (“H”) [5.065]2 1.320 [8.516] —

11/2 x 30.503 (“G”) [3.245] 0.785 (“H”) [5.065] — —[40 x 80]

0.503 (“G”) [3.245]2 x 3 0.503 (“G”) [3.245]1.287 (“J”) [8.303] 2.554 [16.47] 0.785 (“H”) [5.065][50 x 80] 0.785 (“H”) [5.065]

1.287 (“J”) [8.303]

2 x Dual 3–– –– 2.554 [16.47] ––[50 x Dual 80]

1.287 (“J”) [8.30] 3 x 4 1.287 (“J”) [8.303]2.853 (“L”) [18.41] 5.938 [38.31] 1.838 (“K”) [11.86][80 x 100] 1.838 (“K”) [11.86]

2.853 (“L”) [18.41]

3 x Dual 4–– –– 5.938 [38.31] ––[80 x Dual 100]

2.853 (“L”) [18.41]4 x 6

2.853 (“L”) [18.41]3.600 (“M”) [23.23]

[100 x 150] 3.600 (“M”) [23.23] 6.380 (“P”) [41.16] 9.489 [61.21]

4.340 (“N”) [28.00]4.340 (“N”) [28.00]6.380 (“P”) [41.16]

4 x Dual 6–– –– 9.489 [61.21] ––[100 x Dual 150]

11.05 (“Q”) [71.29]6 x 811.05 (“Q”) [71.29] 16.00 (“R”) [103.2]5 20.57 [137.7] 16.00 (“R”) [103.23]

[150 x 200]18.58 (“RR”) [119.8]3

6 x Dual 8[150 x Dual 200]

— — 20.57 [137.7] —

8 x Dual 8[200 x Dual 200]

— — 28.36 [182.9] —

8 x 10[200 x 250]

— 26.00 (“T”) [167.7] 38.96 [251.3] 26.00 (“T”) [167.74]

8 x Dual 10[200 x Dual 250]

— — 38.96 [251.3] —

10 x 144

[250 x 355] — — 63.50 [409.7] —

Notes:1. There are no recognized API “full-bore” orifice areas.

These effective areas are specific to Anderson Greenwood.

2. Threaded body only.

3. Series 700 is available in a non-standard RR orifice 18.580 in2 [119.871 cm2].

4. Certified for gas or steam service only.

5. 10" outlet flange available on special order.

Effective nozzle coefficient of dischargefor 90% of actual capacity

Service Kd

Gas 0.975Liquid 0.650

Steam 0.975



Once you have determined the basic type(e.g., Series 200, 400, etc.) of valve required inPart 1 and determined your required orificearea in Part 2, please refer to the followinginformation to specify and order the pressurerelief valve best suited for your application.

Note: To ensure proper delivery and expediteprocessing, please include the model numberand any additional information requestedbelow in all specifications, purchaserequisitions, and orders, as applicable.

Constructing a model numberTo construct the model number, identify theseven components on the Valve ModelNumbering chart on page 51. Use theresulting assembled number when orderingyour valve.

Specifying other information foryour orderThe following information might be required,depending on the type of valve and otherrequirements:

Special requirementsPlease specify the details of any specialprocedures you require during valvemanufacturing.

These might include unlisted accessories,special quality assurance, material traceability,non-standard plating and surface finishes,non-destructive test requirements, etc. Includerequired levels of inspection and the parties ororganizations who will perform theinspections, if any.

Note: Special requirements can impact priceand delivery.

Valve taggingIf paper tags are requested at the time thevalve is ordered, they will be furnished at noadditional cost. Other types of tagging areoffered at additional cost. If you would likemetallic tags, please identify the specific tagmaterial, and tag numbers when you placeyour order.

DocumentationData submittals are not furnished for orderedproducts unless specified. Certain standarddrawings, test reports, and certifications areavailable at no cost, upon request.

Packing for shipmentAll products are packed for normal domesticshipment from point of assembly or stocking.Special packaging requirements, such asexport boxing, should be specified in yourpurchase order.

Ordering informationTo properly process your order and avoiddelay, please specify the following:

• Quantity

• Inlet Size and Flange Rating and Facing (see page 42)

• Outlet Size and Flange Rating and Facing(see page 61)

• Anderson Greenwood Type Model Number(see page 51)

• Orifice Size (see page 28)

• Material Requirements (see pages 30 - 41)– Main Valve Body– Main Valve Trim– Pilot

• Soft Goods (see pages 43 - 49)

• Set Pressure

• Allowable Overpressure

• Service (Gas, Vapor, Liquid, Steam)

• Temperature (Operating and Relief)

• Operating Pressure

• Back Pressure (Constant Superimposed,Variable Superimposed and Built-up)

• Required Relief Capacity

• Molecular Weight (Gas) or Specific Gravity(Liquid)

• Ratio of Specific Heats (Gas)

• Optional Accessories (see pages 52 - 56)– Field Test Connection– Field Test Indicator– Manifold Dual Pilot– Backflow Preventer– Pilot Supply Filter– Pressure Spike Snubber– Remote Pressure Sense Connection– Remote Valve Lift Indicator– Manual Unloader– Pilot Lift Lever– Remote Unloader– NACE Option

How to order a valve



Series 200/400/500/800 – Standard Main Valve

Materials of construction

/S1 /S1/NACE /S /S/NACE-20°F to +1000°F1 -20°F to +1000°F1 -450°F to +1500°F1 -450°F to +1500°F1

Item Description [-29°C to +537°C1] [-29°C to +537°C1] [-268°C to +816°C1] [-268°C to +816°C1]

1 Body SA216-WCB/WCC CS SA216-WCB/WCC CS SA351-CF8M SS SA351-CF8M SS2 Cap SA516-705 SA516-705 SA240-316 SA240-316

3 Cap Bolting A449/A325 CS A449/A325 CS A193-B8M SS A193-B8M SSA479-316 or A479-316 or A479-316 or A479-316 or4 NozzleA351-CF8M SS A351-CF8M SS A351-CF8M SS A351-CF8M SS

5 PistonA564-630 (17-4 PH), A564-630 (17-4 PH), A564-630 (17-4 PH), A564-630 (17-4 PH),A479-316 or A351-CF8M SS A479-316 or A351-CF8M SS A479-316 or A351-CF8M SS A479-316 or A351-CF8M SSA479-316 or A479-316 or A479-316 or A479-316 or6 LinerA351-CF8M A351-CF8M A351-CF8M SS A351-CF8M SS

7 Dipper Tube 17-4 PH SS 17-4 PH SS 17-4 PH SS 17-4 PH SS8 Dome Spring 316 SS Not Used 316 SS Not Used

9 Tube Fittings CS2 316 SS 316 SS 316 SS10 Seat See Soft Goods (pg 42) See Soft Goods (pg 42) See Soft Goods (pg 42) See Soft Goods (pg 42)11 Piston Seal See Soft Goods (pg 42) See Soft Goods (pg 42) See Soft Goods (pg 42) See Soft Goods (pg 42)

Nozzle A747-CB7CU-1 SS or A747-CB7CU-1 SS or A747-CB7CU-1 SS or A747-CB7CU-1 SS or12Retainer 17-4 PH SS 17-4 PH SS 17-4 PH SS 17-4 PH SS

13 Seat Retainer A479-316 SS A479-316 SS A479-316 SS A479-316 SS14 Seat Retainer

Screw316 SS 17-4 PH SS 316 SS 17-4 PH SS

15 Nozzle Seal4 Filled Teflon® Filled Teflon® Filled Teflon® Filled Teflon®16 Liner Seal See Soft Goods (pg 42) See Soft Goods (pg 42) See Soft Goods (pg 42) See Soft Goods (pg 42)

17 Lift Adj. Bolt3 A193-B8M SS A193-B8M SS A193-B8M SS A193-B8M SS18 Lock Pin3 302 SS 302 SS 302 SS 302 SS

19 Tubing 304 SS 316 SS 316 SS 316 SS

11

5

14

1

15

3

8

6

13

4

9

10

12

19

18

916 17

19

2

7

Notes:1. Maximum temperature relates to fire case conditions.

Continuous service temperature is limited by thechoice of seat and seal materials.

2. SS 316 ferrules.

3. Not required in 6" and larger Series 40/50 valve sizesor in 4" and larger Series 60 valve sizes.

4. Fluorosint 500 for temperatures below -65°F [-54°C] orabove 400°F [204°C]. Standard for Types 249/259/269.

5. Cap material is SA240-316 for Series 500.



921

1514

2210 5

1 8 137

6

18

16

17

2

20

1219

411

3


/S /S1 /S2 /S3Ambient to 1000°F Ambient to 600°F 601°F to 800°F 801°F to 1000°F

Item Description [Ambient to 538°C] [Ambient to 316°C] [318°C to 427°C] [427°C to 538°C]

1 Body SA351-CF8M SS SA216-WCB CS SA216-WCB CS SA217-WC6 AS2 Cap SA240-316 SA516-70 SA516-70 SA387-11

3 Nozzle A351-CF8M SS A351-CF8M SS A351-CF8M SS A351-CF8M SS4 Piston Assembly A217CA-151 A217CA-151 A217CA-151 A217CA-151

5 Liner A479-410 A479-410 A479-410 A479-4106 Stud A193-B7 A193-B7 A193-B7 A193-B7

7 Nut A194-2H A194-2H A194-2H A194-2H8 Piston Damper A479-410 A479-410 A479-410 A479-410

9 Retainer Screw A574 A574 A574 A57410 Dome Spring Inconel® Inconel® Inconel® Inconel®

11Damper Ring with

Ductile Iron Ductile Iron Ductile Iron Ductile IronCentralizer SpringPiston Seal Ring with12Centralizer Spring

Ductile Iron Ductile Iron Ductile Iron Ductile Iron

13 Liner Seal GRAFOIL® GRAFOIL® GRAFOIL® GRAFOIL®14 Seal Extrusion Ring 1018 STL 1018 STL 1018 STL 1018

15 Nozzle Seal Thermabraid SS Thermabraid SS Thermabraid SS Thermabraid SS16 Drain Spring 316 SS 316 SS 316 SS 316 SS

17 Drain Plunger 17-4 SS 17-4 SS 17-4 SS 17-4 SS18 Pipe Plug, Hex HD 316 SS 316 SS 316 SS 316 SS

19 Filter Assembly 316 SS 316 SS 316 SS 316 SS20 Pitot Tube Seal GRAFOIL® GRAFOIL® GRAFOIL® GRAFOIL®

21 Belleville Washer 17-7 SS 17-7 SS 17-7 SS 17-7 SS17-4 SS or

22 Disc 718 Nickel Alloy 718 Nickel Alloy 718 Nickel Alloy 718 Nickel Alloy

Series 700 – Standard Main Valve



Series 200 Pilot

11

7

8

1

19

532

20

29

24

26

Supply

27

22

25

15

14

13

12

9

10

9

6

4

Dome

17

18

28

23

21

16



Series 200 Pilot


Item Description /S1, /S, /S1/NACE, /S/NACE

1 Body A479-316 SS 2 Nozzle Seal PCTFE

3 Nozzle A479 316 SS4 Seat See Soft Goods (pg 42)2

5 Seat Retainer (upper) A479 316 SS 6 Spindle A479 316 SS/CR PL

7 Guide A479 316 SS 8 Bonnet Seal See Soft Goods (pg 42)2

9 Spring Washer A479 316 SS 10 Spring 316 SS1

11 Bonnet A479 316 SS 12 Jam Nut 316 SS

13 Set Pressure Adjustment Screw A276 316 SS 14 Cap A479 316 SS

15 Blowdown Adjustment Screw A479 316 SS 16 Blowdown Adjustment Seal See Soft Goods (pg 42)2

17 Seat Retainer (lower) A276 316 SS 18 Piston Seal See Soft Goods (pg 42)2

19 Spacer A276 316 SS 20 Reseat Seat A479 316 SS

21 Bushing Seal See Soft Goods (pg 42)2

22 Reseat Adjustment Bushing A479 316 SS

23 Spacer Washer 316 SS 24 Blowdown Seal Teflon® TFE

25 Jam Nut 316 SS 26 Inlet Screen 316 SS

27 Reseat Piston A276 316 SS 28 Pipe Plug A479 316 SS

29 Vent Zytel®/316 SS



Notes:1. For NACE trim, item 10 is Inconel®.

2. Viton® standard for NACE service.

Series 400 Pilot (Gas Service)

26

352224

25

3

8

Dome

34

33

32

9

45

16

17

1815

19

6

13

12

4and

42

14

41

23

7

27

11

28

5

1 29 2 30 31

13

39

38

10

20and21

40

100 - 1480 psig[6.90 - 102 barg]

15 - 99 psig[1.03 - 6.82 barg]

43

44

9

3 26

39

12



1 Body A479-316 SS A479-316 SS2 Body Plug A479-316 SS A479-316 SS

3 Feedback Piston A479-316 SS A479-316 SSSee Soft Goods 4 Sense Diaphragm(page 42)

Viton®

5 Inlet Nozzle A479-316 SS A479-316 SS6 Spring 17-7 SS1 17-7 SS1,3

7 Inlet SeatSee Soft Goods (page 42)

Viton®

8 Spool Spring 302 SS Elgiloy

9 Piston Nut 316 SS 316 SS10 Sense Washer A479-316 SS 316 SS

11 Bias Spring 316 SS ElgiloySee Soft Goods12 Upper Piston Seal(page 42)

Viton®

13 Spring Washer A479-316 SS A479-316 SS14 Diaphragm Case A479-316 SS A479-316 SS

15 Spring Bonnet A351-CF8M SS A351-CF8M SS16 Adjustment Screw A276-316 SS A276-316 SS

17 Jam Nut A479-316 SS A479-316 SS18 Cap A479-316 SS4 A479-316 SS4

19 Bonnet Vent Zytel® Zytel®20 Case Bolt A193-B8M SS2 A193-B8M SS2

21 Body Bolt A193-B8M SS2 A193-B8M SS2

Case/Diaphragm See Soft Goods 22Seal (page 42)

Viton®

23 Bushing A26-316 SS A276-316 SS24 Piston Sleeve A479-316 SS A479-316 SS

See Soft Goods 25 Sleeve/Case Seal (page 42)

Viton®

See Soft Goods 26 Lower Piston Seal (page 42)

Viton®

See Soft Goods27 Inlet Nozzle Seal(page 42)

Viton®

A564-630 A564-630 28 Outlet Nozzle(17-4PH) SS (17-4PH) SS

Upper Outlet See Soft Goods 29Nozzle Seal (page 42)

Viton®

See Soft Goods 30 Body Plug Seal(page 42) Viton®See Soft Goods 31 Spool Seal(page 42)

Viton®

Lower Outlet See Soft Goods 32Nozzle Seal (page 42)

Viton®

See Soft Goods33 Outlet Seat(page 42)

Viton®

34 Spool A479-316 SS A479-316 SSDiaphragm35Retainer Washer

A479-316 SS A479-316 SS

38 Sense Plate A479-316 SS A479-316 SS39 Lock Washer A479-316 SS A479-316 SS

See Soft Goods 40 Diaphragm Seal(page 42)

Viton®

See Soft Goods 41 Body/Case Seal(page 42)

Viton®

42 Diaphragm Shield Teflon®-FEP Teflon®-FEP43 Sense Piston A479-316 SS A479-316 SS

See Soft Goods 44 Piston Sense Seal(page 42)

Viton®

45 Bonnet Insert (17-4PH) SS (17-4PH) SS

Series 400 Pilot

Materials of construction/S1/NACE, /S1/NACE,

Item Description /S1, /S /S/NACE Item Description /S1, /S /S/NACE



Notes:1. 316 SS for set pressure range 15 - 65 psig [1.03 - 4.48 barg].

2. 302SS for set pressure range 501 - 1480 psig [34.5 - 102.1 barg].

3. Inconel® optional.

4. A582-303 SS for cap with lift lever option.

Series 500 Pilot

12

24

13

31

30

17

18

25

14

35and 32

16

6

35and 32

9

26

21

4

28

2

1

23

10

11

19

34

22

29and33

3

7

5

8

20

36

27

15

7

8

9

275 - 720 psig[19.0 - 51.0 barg]



Series 500 Pilot


Item Description /S1, /S, /S1/NACE, /S/NACE

1 Body A351 GR. CF8M2 Nozzle A479-316 SS3 Spindle A276-316 SS4 Socket/Seat A479-316 SS5 Diaphragm Support Plate A479-316 SS6 Spacer Ring A479-316 SS 7 Sense Plate A479-316 SS 8 Boost Plate A479-316 SS9 Diaphragm Shield A240-304 SS10 Bonnet A351-CF8M SS11 Spring Washer A479-316 SS12 Pressure Adjustment Screw A276-316 SS13 Bonnet Insert SA564-670 (17-4) SS14 Bonnet Seal BUNA-N15 Spindle Seal Teflon®-TFE116 Plate Boost Seal Teflon®-TFE17 Spring 316 SS218 Bonnet Vent Aluminum19 Lock Washer3 316 SS20 Shim Washer 18-8 SS4

21 Retainer Screw 18-8 SS522 Bolt 17-4 SS PH23 Cap 316 SS1024 Jam Nut A479-316 SS 25 Jam Nut 18-8 SS26 Seal Retainer A479-316 SS27 Seat PEEK28 Ball 316 SS6

29 Diaphragm Teflon®-FEP Type L730 Nameplate A240-304 SS 31 Drive Screw 304 SS 32 Gasket3 Teflon®-TFE33 Diaphragm Hastelloy®834 Spindle Gasket Teflon®-FEP35 Gasket PEEK936 Upper Diaphragm Shield A240-304 SS

Notes:1. Carbon filled Teflon®-TFE seal Hastelloy® spring loaded.

2. 316 SS used 60 psig [4.14 barg] and below, 17-7 SS used 61 to 720 psig [4.21 to 49.6 barg].

3. Used 180 psig [12.4 barg] and below.

4. 316 SS Annealed for NACE.

5. Monel® for NACE

6. Hastelloy® C for NACE.

7. Upper and lower diaphragm, 15 to 30 psig [1.03 to 2.07 barg], lower diaphragm only, 31 to 120 psig [2.14 to 8.27 barg].

8. Upper diaphragm only 31 to 120 psig [2.14 to 8.27 barg], upper and lower diaphragm, 121 to 720 psig[8.34 to 49.6 barg].

9. Used above 180 psig [12.4 barg].

10. 303 SS cap used on bonnets with lift levers and/or gag.



35

27

34

33

Optional Features

Threaded Cap

Threaded Cap and Gag

Lift Lever and Gag

Series 700 Pilot

25

2

26

29

32

27

30

28

27

23

10

1215

22

17

19

18

21

3

5

6

4

7

4

31

8

14

38

36

37

9

11

13

Dome

24

1

1620

To Supply



Series 700 Pilot


Item Description /S1, /S2, /S3, /S

1 Body SS A479-316

2 Lift Lever Bonnet SS A479-316

3 Cap SS A479-316

4 Spring Washer SS A479-316

5 Adjusting Screw SS A479-316

6 Hex Jam Nut SS 316

7 Spring Inconel® X750

8 Spindle SS 17-4

9 Disc SS 17-4

10 Nozzle SS 17-4

11 Nozzle Seal GRAFOIL®/SST

12 Reseat Seat SS 17-4

13 Spacer SS 17-4

14 Cage Guide SS A479-316

15 Reseat Piston SS 17-4

16 Reseat Bushing SS A479-316

17 Thread Seal GRAFOIL®

18 Blowdown Adjustment Nut SS A479-316

19 Blowdown Adjustment Packing GRAFOIL®

20 Safety Lock Screw SS 18-8

21 Blowdown Adjustment Screw SS A479-316

22 1/2 NPT Pipe Plug SS A479-316

23 Vent Aluminum

24 Shim SS 316

25 Lever SS 316

26 Torsion Spring SS 316

27 O-ring Teflon®

28 Lock Washer SS 18-8

29 Roll Pin SS 420

30 1/4-28 x 1/4 Bolt SS 18-8

31 Cam SS 316

32 Gland Nut SS A479-316

33 Gag Rod SS 300 or 4130 Alloy Steel

34 Gag Rod Lever SS 18-8

35 Bolt SS A193-B8M

36 Ball SS 440C

37 Disc Spring Washer MP35N® Alloy

38 Bonnet Spring Washer SS 17-4



18

20

21

14

2224

15

10

29

314

27

28

1

16

5

19

19

13

11

2312

6

9

25

8

30

26

3

7

217

Series 800 Pilot



Series 800 Pilot


Item Description /S1, /S /S1/NACE, /S/NACE

1 Body A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS2 Inlet Bushing A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS

3 Outlet Nozzle A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS4 Inlet Nozzle A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS

5 Bonnet A351-CF8M SS A351-CF8M SS6 Bonnet Lock Bolt 316 SS 316 SS

7 Inner Spool A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS 8 Outer Spool A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS

9 Spool Nut A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS10 Feedback Piston A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS

11 Sense Piston A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS12 Feedback Spacer A269-316 SS A269-316 SS

13 Lock Washer 316 SS 316 SS14 Hex Nut A194-8M SS A194-8M SS

15 Spool Spring Inconel® X-750 Inconel® X-75016 Lock Nut A479-316 SS A479-316 SS

17 Screen Assembly 316 SS 316 SS18 Cap A582-303 SS A582-303 SS

19 Spring Washer A479-316 SS A479-316 SS20 Pressure Set Screw A564-630 H1150 17-4 SS A564-630 H1150 17-4 SS

21 Set Spring 316 SS 316 SS 22 Piston Seal Backup Ring See Soft Goods (pg 42) Viton®

23 Sense Seal See Soft Goods (pg 42) Viton®24 Feedback Seal See Soft Goods (pg 42) Viton®

25 Inlet Seat See Soft Goods (pg 42) Viton®26 Outlet Nozzle Seal See Soft Goods (pg 42) Viton®

27 Spool Seal See Soft Goods (pg 42) Viton®28 Inlet Bushing Seal See Soft Goods (pg 42) Viton®

29 Inlet Nozzle Seal See Soft Goods (pg 42) Viton®30 Outlet Seat See Soft Goods (pg 42) Viton®

31 Inner Spool Seal See Soft Goods (pg 42) Viton®



All valves, excluding the Series 700 require the use of soft goods for their seats and seals. Toassist in selecting an acceptable soft goods, please note the following instructions:

1. Choose the main valve seat material based upon set pressure and relieving temperature(non-fire case) or operating temperature (fire case) from pages 43 - 49.

2. Choose the main valve seal based upon relieving temperature (non-fire case) or operatingtemperature (fire case) from page 50.

3. Choose the pilot valve seat and seal based upon set pressure and relieving temperature(non-fire case) or operating temperature (fire case) from page 50.

4. The final soft goods selected should be chemically compatible with the lading fluid.

Inlet Flange Ratings

Maximum pressure rating, psig [barg]Temperature, °F [°C]

Flange -423 to -21 -20 to 100 200 300 400 500 600 700 800Class Material1 [-253 to -30] [-29 to 38] [93] [149] [205] [260] [316] [371] [427]

CS – 285 [19.7] 260 [17.9] 230 [15.9] 200 [13.8] 170 [11.7] 140 [9.66] 110 [7.59] 80 [5.52]150#SS 275 [19.0] 275 [19.0] 240 [16.6] 215 [14.8] 195 [13.5] 170 [11.7] 140 [9.66] 110 [7.59] 80 [5.52]CS – 740 [51.0] 675 [46.6] 655 [45.2] 635 [43.8] 600 [41.4] 550 [37.9] 535 [36.9] 410 [28.3]

300#SS 720 [49.6] 720 [49.7] 620 [42.8] 560 [38.6] 515 [35.5] 480 [33.1] 450 [31.0] 430 [29.7] 415 [28.6]

CS – 1480 [102.1] 1350 [93.1] 1315 [90.7] 1270 [87.6] 1200 [82.8] 1095 [75.5] 1065 [73.4] 825 [56.9]600#SS 1440 [99.3] 1440 [99.3] 1240 [85.5] 1120 [77.2] 1030 [71.0] 955 [65.9] 905 [62.4] 865 [59.7] 830 [57.2]CS – 2220 [153.1] 2025 [139.6] 1970 [135.8] 1900 [131.0] 1795 [123.8] 1640 [113.1] 1600 [110.3] 1235 [85.2]

900#SS 2160 [149.0] 2160 [149.0] 1860 [128.3] 1680 [115.8] 1540 [106.2] 1435 [99.0] 1355 [93.5] 1275 [87.9] 1245 [85.9]

CS – 3705 [255.5] 3375 [232.7] 3280 [226.2] 3170 [218.6] 2995 [206.6] – – –1500#SS 3600 [248.2] 3600 [248.2] 3095 [213.4] 2795 [192.7] 2570 [177.2] 2390 [164.8] – – –CS – 6170 [425.4] 5625 [387.8] 5470 [377.2] 5280 [364.1] 4990 [344.1] – – –

2500#SS 6000 [413.7] 6000 [413.8] 5160 [355.8] 4660 [321.3] 4280 [295.1] 3980 [274.5] – – –

Notes:1. CS: SA216, Grade WCB.

SS: SA351, Grade CF8M.

2. Ratings at temperatures at and above -20°F [-29°C] per ANSI B16.34.

Recommended soft good’s limits



Main Valve Seat – Types 243/253, 443/453, 843/853, 249/2591

Orifice Main Valve

D, E, F1 x 21.5 x 21.5 x 2G, H1.5 x 3

Notes: 1. Select Teflon® or filled Teflon® seat only.

2. Urethane seat not available with Series 800 pilot.

3. Available seat materials are dependent upon pilot series selected

Pilot Minimum Set Maximum Setpsig [barg] psig [barg]

200 25 [1.72] 6170 [425]400 15 [1.03] 1480 [102]800 1481 [102] 6170 [425]

Ethy

lene

Prop

ylen

e

BUNA

-N

Vito

n

Teflo

n®

®

®

n

SS F

illed

Teflo

n

PEEK

Vesp

el

Uret

hane

2

500[260]

400[204]

200[93]

325 [162]

300 [148]

275[135]

-20[-28]

-65[-53]

-85[-65]

-423[-252]

15 600 1480 3705 6170[1.03] [41.3] [102] [255] [425]

515[268]

Tem

pera

ture

, °F

[°C

]

Set Pressure, psig [barg]



Main Valve Seat – Types 243/253/263, 443/453/463, 843/853/863, 249/259/269

500[260]

400[204]

200[93]

325 [162]

300 [148]

275[135]

-20[-28]

-65[-53]

-85[-65]

-423[-252]

15 400 1480 3705 6170[1.03] [27.6] [102] [255] [425]

515[268]

Ethy

lene

Prop

ylen

e

BUNA

-N

Vito

n

Teflo

n

SS F

illed

Teflo

n

PEEK

Vesp

el

Uret

hane

2

®

®

®

Orifice Main Valve

Full Bore 1.5 x 2G, H, J 2 x 3

Full Bore2 x 32 x 3 x 3

J, K, L 3 x 4

Notes: 1. Select Teflon® or filled Teflon® seat only.2. Urethane seat not available with Series 800 pilot.



200 25 [1.72] 6170 [425]400 15 [1.03] 1480 [102]800 1481 [102] 6170 [425]

Tem

pera

ture

, °F

[°C

]




Main Valve Seat – Types 243/253/263, 443/453/463, 843/853/863, 249/259/2691

500[260]

400[204]

200[93]

325 [162]

300 [148]

275[135]

-20[-28]

-65[-53]

-85[-65]

-423[-252]

15 400 1480 3705[1.03] [27.6] [102] [255]

515[268]

Ethy

lene

Prop

ylen

e

BUNA

-N

Vito

n

Teflo

n

SS F

illed

Teflo

n

PEEK

Vesp

el

Uret

hane

2

®

®

®

Orifice Main Valve


L, M, N, P 4 x 6

Notes: 1. Select Teflon® or filled Teflon® seat only.2. Urethane seat not available with Series 800 pilot.



200 25 [1.72] 3705 [255]400 15 [1.03] 1480 [102]800 1481 [102] 3705 [255]

Tem

pera

ture

, °F

[°C

]




Main Valve Seat – Types 263, 463, 863, 2691

Orifice Main Valve




500[260]

400[204]

200[93]

325 [162]

300 [148]

275[135]

-20[-28]

-65[-53]

-85[-65]

-423[-252]

15 400 1480 2220[1.03] [27.6] [102] [153]

515[268]

Ethy

lene

Prop

ylen

e

BUNA

-N

Vito

n

Teflo

n

SS F

illed

Teflo

n

PEEK

Vesp

el

Uret

hane

2

®

®

®

Tem

pera

ture

, °F

[°C

]


Main Valve Seat – Types 243/253/263, 443/453/463, 249/259/2691

Ethy

lene

Prop

ylen

e

BUNA

-N

Vito

n

Teflo

n

SS F

illed

Teflo

n

Uret

hane

2

500[260]

400[204]

200[93]

325 [162]

300 [148]

275[135]

-20[-28]

-65[-53]

-85[-65]

-423[-252]

15 275 1480[1.03] [18.9] [102]

®

®

®

Orifice Main Valve

Q, R 6 x 8Full Bore 6 x 8 or 6 x 8 x 8

Full Bore 8 x 8 x 8T 8 x 10

Full Bore 8 x 10

Tem

pera

ture

, °F

[°C

]


Notes: 1. Select Teflon® or filled Teflon® seat only.2. Available seat materials are dependent upon pilot series selected


200 25 [1.72] 1480 [102]400 15 [1.03] 1480 [102]



Main Valve Seat – Types 243/253/263, 443/453/463, 249/259/2691

Ethy

lene

Prop

ylen

e

BUNA

-N

Vito

n

Teflo

n

SS F

illed

Teflo

n

Uret

hane

2

500[260]

400[204]

325 [162]

300 [148]

275[135]

200[93]

-20[-28]

-65[-53]

-85[-65]

-423[-252]

15 275 740[1.03] [18.9] [51.0]

®

®

®

Orifice Main Valve

Full Bore 10 x 14

Tem

pera

ture

, °F

[°C

]


Notes: 1. Select Teflon® or filled Teflon® seat only.2. Available seat materials are dependent upon pilot series selected


200 25 [1.72] 740 [51.0]400 15 [1.03] 740 [51.0]



Main Valve Seat – Types 546/566

Te�on

515[268]

-65[-53]

15 720[1.03] [49.6]

®

Orifice Main Valve

All All

Tem

pera

ture

, °F

[°C

]




Main Valve Seals

Temperature, °F [°C] Pressure, psig [barg]Valve Type Material Minimum Maximum Minimum Maximum1

BUNA-N -65 [-53] 275 [135] 25 [1.72] 6170 [425]Viton® -20 [-28] 400 [204] 25 [1.72] 6170 [425]

243/253/263 Ethylene Propylene -65 [-53] 325 [162] 25 [1.72] 6170 [425]Aflas -20 [-28] 500 [260] 25 [1.72] 6170 [425]Kalrez® 0 [-18] 600 [315] 25 [1.72] 6170 [425]BUNA-N -65 [-53] 275 [135] 15 [1.03] 1480 [102]Viton® -20 [-28] 400 [204] 15 [1.03] 1480 [102]

443/453/463 Ethylene Propylene -65 [-53] 325 [162] 15 [1.03] 1480 [102]Aflas -20 [-28] 500 [260] 100 [6.90] 1480 [102]Kalrez® 0 [-18] 600 [315] 100 [6.90] 1480 [102]

BUNA-N -65 [-53] 275 [135] 1481 [102] 6170 [425]Viton® -20 [-28] 400 [204] 1481 [102] 6170 [425]

843/853/863 Ethylene Propylene -65 [-53] 325 [162] 1481 [102] 6170 [425]Aflas -20 [-28] 500 [260] 1481 [102] 6170 [425]Kalrez® 0 [-18] 600 [315] 1481 [102] 6170 [425]

546/566 Teflon® -65 [-53] 515 [268] 15 [1.03] 720 [49.6]

249/259/269 Teflon® -423 [-252] 275 [135] 25 [1.72] 1480 [102]

Pilot Valve Seat and Seals

Temperature, °F [°C] Pressure, psig [barg]Valve Type Material Minimum Maximum Minimum Maximum1

BUNA-N -65 [-53] 275 [135] 25 [1.72] 6170 [425]Viton® -40 [-40] 400 [204] 25 [1.72] 6170 [425]

243/253/263 Ethylene Propylene -65 [-53] 325 [162] 25 [1.72] 6170 [425]Aflas -20 [-28] 500 [260] 25 [1.72] 6170 [425]Kalrez® 0 [-18] 600 [315] 25 [1.72] 6170 [425]BUNA-N -65 -53] 275 [135] 15 [1.03] 1480 [102]Viton® -40 [-40] 400 [204] 15 [1.03] 1480 [102]

443/453/463 Ethylene Propylene -65 [-53] 325 [162] 15 [1.03] 1480 [102]Aflas -20 [-28] 500 [260] 100 [6.90] 1480 [102]Kalrez® 0 [-18] 600 [315] 100 [6.90] 1480 [102]

BUNA-N -65 [-53] 275 [135] 1481 [102] 6170 [425]Viton® -40 [-40] 400 [204] 1481 [102] 6170 [425]

843/853/863 Ethylene Propylene -65 [-53] 325 [162] 1481 [102] 6170 [425]Aflas -20 [-28] 500 [260] 1481 [102] 6170 [425]Kalrez® 0 [-18] 600 [315] 1481 [102] 6170 [425]

546/566 PEEK/Teflon® -65 [-53] 515 [268] 15 [1.03] 720 [48.6]

249/259/269 BUNA-N -423 [-252] 275 [135] 25 [1.72] 1480 [102]

Note: 1. Maximum pressure is limited by main valve size.



Model Numbering4 4 3 10 J 23 /S1

Pilot Series

2 – Series 2004 – Series 4005 – Series 5007 – Series 7008 – Series 800

Main Valve Lift1

2 – Full Lift, API Orifice (Type 727 only)4 – Full Lift, API Orifice5 – Restricted, API Orifice6 – Full Lift, Full Bore Orifice

Main Valve Piston Type

3 – Soft Seat/Seals6 – Teflon® Soft Seat/Seals (Types 546, 566 only)7 – Metal Seat/Seals (Type 727 only)9 – Cryogenic Trim Soft Seat/Seals (Types 249, 259, 269 only)

Inlet Flange Rating, ANSI

05 – 150#10 – 300#12 – 600#14 – 900#16 – 1500#18 – 2500#N – FNPT

Orifice Designation

Letter – API Equivalent— – Full Bore (Largest practical orifice area for a given valve inlet size)

Inlet x Outlet, Inches

Main Valve Materials

/S – SS Body and Trim/S1 – CS Body, SS Trim/S2 – CS Body, High-temperature Trim (Series 700 only)/S3 – WC6 Alloy Steel Body, High-temperature Trim (Series 700 only)

/S1/NACE – CS Body and SS Trim Compliance With NACE MR0175 (2002 Edition)S/NACE – SS Body and Trim Compliance With NACE MR0175 (2002 Edition)

/SPL – Special

Note: 1. For a full lift valve, the area controlling the valve capacity is the main

valve nozzle bore. For a restricted lift valve, the area controlling the valvecapacity is the “curtain area” between the main valve nozzle and thebottom of the lifted piston.



In addition to the beneficial features availablethrough the use of pilot operated safetyvalves, a variety of accessories and optionsare available to provide additional functions.Some simplify the process of periodic testing,an important safety requirement today. Othersassist in the successful operation of the safetyvalve under adverse or special applications.

Please refer to the options and accessoriesavailability table above. On request, otheroptions may be available for some models forspecial situations, such as position indicators,purge connections, multiple pilots, differentialpressure sensing, etc.

A. Field test connection:• In-service verification of set pressure.

• Simplifies the periodic testing of safety valves.

Anderson Greenwood pilot operated safetyvalves may be readily tested for verification ofset pressure during normal system operationwith this option. Field Test Connection is anoption on most models. The customerfurnishes a pressure source, plus a test gaugeand metering valve for the portable fieldtesting system. When test pressure is slowlyadmitted through a metering valve, the pilotand the main valve dome are pressurized,simulating an increased system pressure.

When set pressure is reached, the pilot willaudibily actuate. This actuation pressure maythen be compared with the nameplate value.Depending upon the current system pressure,and the characteristics of the specific pilot,the main valve may also briefly open andclose, or partially open and close, providingverification that the main valve piston is freeto move.

When the Field Test Connection is used with the modulating type pilots, the pilot willbegin cracking at a pressure just below thenameplate setting. In order to accuratelyestablish the set pressure, another accessory,the Field Test Indicator, is recommended.

B. Field test indicator:• Simplifies verification of modulating pilot set pressures.

• Only one test connection and pressuregauge required.

This is a mechanical indicator, allowing for theaccurate verification of set pressure.

Accessories and Options

A

B

Options and accessories availability table

Pilot SeriesAccessory/Option 200 400 500 700 800

Field Test Connection O N/A O O N/AField Test Connection w/Indication N/A O O1 N/A O

Backflow Preventer O O O N/A ORemote Pressure Sense Connection O O O O O

Manual Unloader2 O O O O ORemote Unloader3 O O O O O

Pilot Supply Filter O O O O OPilot Lift Lever O O O O O

Pressure Spike Snubber (Gas) O O N/A S4 OPressure Spike Snubber (Liquid) N/A O N/A N/A O

NACE Trim O O O N/A ORemote Valve Lift Indicator5 O O O O O

Manifolded Dual Pilots N/A N/A N/A O N/AManifolded Single Pilot N/A N/A N/A O N/A

Notes:Option Codes:

S - Standard

O - Optional: available upon request

N/A - Not available for this model valve.

Materials: Options and accessories will utilizematerials of construction consistent with those of the main valve and pilot valve. Contact yoursales representative for specific details.

1. This option is recommended whenever Field Test Connection is specified.

2. The effective CV of the unloader shall be at least 0.4 (KV = 0.35), including any associated tubing or piping.

3. Furnish full particulars. See option description on page 56.

4. Standard for air/gas/vapor service.

5. Furnish complete details on type of signaloutput desired and power supply available.



Since the set pressure of modulating safetyvalves in this catalogue are defined as thepoint when the dome pressure is reduced to70 percent of set pressure, when systempressure reaches the nameplate setting, theindicator is activated. This gives positiveverification that set pressure has beenreached. The set point verification process forthe modulating pilots requires a Field TestIndicator.

C. Manifold dual pilot:• In-Service Replacement of Pilot.

• Extended Outage Cycle. The MDP isavailable both as an option and as a retrofitkit. The dual cartridge pilots are manifoldedin a miniature safety selector valve whichallows for in-service replacement of thepilot without shutting the system downwhile maintaining full system overpressureprotection. Also, field test connection andmanual blowdown are built into themanifold.

D. Backflow preventer:• Prevents accidental reverse flow throughsafety valve.

This option, sometimes called a “vacuumblock,” prevents a pilot operated safety valvefrom reverse flow, when sufficient vacuum is present at the inlet flange. The backflowpreventer also prevents reverse flow when thepressure at the outlet flange (superimposedback pressure) is greater than the currentsystem pressure. Reverse flow will occur withany standard type or design of pilot operatedsafety valve, when sufficient reversedifferential pressure exists. Reverse flow,should it be induced by a reverse differentialpressure, will be prevented by this option.

All backflow preventers operate by permittingthe introduction of outlet pressure into thedome of the main valve, thereby holding thepiston firmly onto the nozzle, overcoming theeffect of a reverse differential pressure acrossthe safety valve. The option also includes abuilt-in provision to prevent reverse flowthrough the pilot that would otherwise passthrough the pilot supply line, back into thesystem.

A backflow preventer should be specifiedwhenever:

• A vacuum may be present at the inletconnection due to unusual operatingconditions or a temporary vacuumcondition that may occur under startupconditions.

• The discharge of the safety valve isconnected to a downstream pressurevessel, where pressure may vary from timeto time, in excess of the pressure in theupstream system.

• The discharge of multiple safety valves iscombined into a single manifold or ventsystem, creating superimposed backpressures in excess of the current upstreamsystem pressure.

E. Pilot supply filter:• Protects pilot from excessive particulatematter in flow stream.

This is a mechanical filter that is available forgas and liquid applications where there is a possibility of large amounts of particulatematter in the fluid stream. The filter is optionalfor liquid or gas service for any pilot model,except model 727 used in steam orcondensible vapor. The pilot supply filter willbe rigidly mounted to the main valve cap.


E

C

D



F. Pressure spike snubber(gas service):

• Overcomes pressure “spikes” in gassystems, that would cause prematureactuation.

This option may be provided on the Series 200or 400 non-flowing type pilots, only on gasapplications. The snubber is recommended foruse on pulsating gas compressor applications,where instantaneous pressure values(pressure spikes) approach or exceed the setpressure and may cause inadvertent valveactuation. The device acts as a pulsationdampener; consisting of a series of fixedorifices, combined with small volumechambers that dampen the transient pressurerises. The average static system pressure isunaffected, so no change in set pressure isexperienced with this option. The pressurespike snubber is compact and is mounted tothe main valve cap. Please note that it is to beapplied only for air/gas/vapor applications.

For air/gas/vapor applications, the Series 700non-flowing pilot is supplied with pressurespike snubber as standard.

G. Remote pressure senseconnection:

• Safety valve will respond to actual system pressure conditions.

• Eliminates undesirable cycling due to excessive inlet pressure losses.

• Improves safety, under adverse operating conditions.

This optional feature permits the pilot to sense system pressure at a location thatmost accurately reflects the actual operatingpressure of the protected system. A remotepressure sense connection eliminates thefalse system pressure indication that willoccur during relieving conditions, due topressure losses in the inlet piping to the safetyvalve. Most applicable codes recommend thatthe inlet piping system be designed for amaximum anticipated non-recoverablepressure loss of 3 percent. If this is notpossible, the remote pressure senseconnection should be specified.

Please note that the addition of a remote pilotsense line allows the pilot to correctly sensesystem pressure and to keep the valve fromrapid cycling or chattering. With remotesensing the piston type, pilot operated safetyvalves described in this catalogue will remainstable against the effects of high inletpressure loss phenomena. However, relievingcapacity will be proportionately reducedwhenever there is inlet pressure loss to thesafety valve.

Please note that valves furnished for remotepilot sense, may be converted to integralsense, or vice versa, since the pressure pickupis installed in all main valves, and the integralsense connection is closed off with aremovable MNPT threaded pipe plug.

H. Remote valve lift indicator:• Provides remote signal to allow the plantoperator to know when a pressure reliefvalve has opened.

This feature consists of a differential pressureswitch, actuated when the main valve hasbeen operated. The switch is adjusted tosense the difference between the systempressure and the main valve dome pressure.Electrical indication is then available to aremote location. Furnish full particulars onelectrical power available, the switch contactstyle and rating, the type of enclosure andhazard rating. The switch will be mechanicallymounted to the main valve cap. Externalwiring enclosures are not normally furnished.


F

G

H



I. Manual unloader:• Permits the safety valve to be opened todepressurize the system.

• Acts as manual override to normal pressuresetting, but has no effect on the sealedpressure setting.

A manual unloader consists of a small handvalve connected to the dome line of the mainvalve. Opening of the hand valve vents thedome pressure faster than it can be rechargedby the pilot supply. Sufficient dome pressurereduction results in piston lift, due tounbalanced forces, simulating pilot actuation.This option is used to allow the safety valve tobe used, along with other valves, for theemergency reduction of system pressure dueto potential safety hazards. When permitted,the manual unloader may be substituted for amechanical lift lever.

J. Pilot lift lever:• Permits manual test of safety valveoperation.

This feature is provided for those applicationswhere the mechanical lifting of the pilot isrequired for verification of valve operation.Lifting of the pilot spindle will permit the mainvalve to lift when the system pressure is atleast 75 percent or more of set pressure. Thepilot lift lever is packed to prevent externalleakage. Some safety regulations and codesrequire that a lift lever be furnished for air, hotwater over 140°F [284°C] and steamapplications.

K. Pressure spike snubber (liquid service):

• Minimizes pressure “spikes” in liquidsystems that can cause seat wear orunwanted relief valve opening

Relief valves that are in locations such aspump discharge applications, can be exposedcontinuously to damaging liquid pulsations. Ifthe amplitude and/or frequency of thesepulsations cause any movement in the reliefvalve trim, the seating performance can bequickly diminished. If the peak of thesepulsations nears the cracking or even the setpressure, then unwanted releases of ladingfluid can be experienced. The liquid spikesnubber is positioned in the pilot sense line toprotect the pilot and subsequently the mainvalve from unusual wear. This dampener usesa gas charged bladder system to reduce theenergy created in pulsating liquid service. Thedampener will stay charged with pressure,even if the relief valve opens and closes dueto overpressure. This option is available withthe modulating 400 or 800 series non-flowingpilots.


J

K

I




Remote unloader:• Permits the safety valve to be remotelyopened to depressurize the system.

This is the same scheme as the manualunloader, except that the unloader valve is remotely operated. Either solenoid orpneumatic operation may be used. Pleasefurnish full particulars of the type of unloaderelectro valve to be furnished, and the desiredvalve action: normally open or closed. Forsolenoid operation, specify the voltage andcurrent (AC or DC). Furnish the frequency inHertz for alternating current. The type ofenclosure, such as explosion proof, splashproof, corrosion resistant, etc., must also bespecified for electrical operators. Unlessotherwise specified, no separate wiringenclosure is furnished.

If the remote unloader is supplied, it will bemechanically mounted to the safety valvewith the pressure connection to the domeline of the main valve. Venting will be to theatmosphere through a weather fitting.

Pilot valve test drum:• Simplifies field and maintenance shopresetting and repair.

This is an option for the shop testing andresetting of the pilot, and is offered forcustomer maintenance and repair shops. It consists of a small accumulator,approximately 0.01 cubic meter (0.25 cubicfeet) volume, with the necessary fittings,valves and test gauges for mounting andtesting of the pilot. The test drums are madeto order for the pilot models specified. Pleasefurnish the set pressure range and the pilotmodels to be tested. The customer furnishesthe pressure supply to the accumulator. Toolsfor adjusting and servicing the pilot are notincluded.

NACE option:• Essential option for sour gas service.

This is a material option to meet the stresscorrosion problems associated with sour gasservice. The materials in both the pilot andmain valve will meet the requirements ofNACE MR0175. (Our “standard” NACE optionmeets the requirements of NACE MR0175(2002), and NACE MR0103.)

Pilot Valve

Pilot Supply Line

Metering Valve

Vent Valve

Supply (System)Pressure Gauge

High PressureNitrogen orAir Supply



Notes:2. Higher rated outlet flanges available on

special order.

3. Series 200 pilot only. Add 5 inches for Series400 and 800 pilots, and 7 inches for Series 500 pilot.

4. Series 200 pilot only. Add 12 lbs. for Series 400,6 lbs. for Series 800 and 8 lbs. for Series 500Pilots.

Dimensions and Weights

B

A

C

B

A

C

Flanged – Types 243/249/253/259, 443/453, 546, 843/853Size Available Inlet Flange Outlet Flange Dimensions Approximate

in [mm] Equivalent RF or RJ RF1 A B C Approx.2 Weight3Flow Areas in [mm] in [mm] in [mm] lb [kg]

1 x 2 [25 x 50] D, E, F 1" – 150# 2" – 150# 4.12 [105] 4.50 [114] 17 [430] 26 [11.8]1 x 2 [25 x 50] D, E, F 1" – 300# 2" – 150# 4.38 [111] 4.50 [114] 17 [430] 27 [12.3]

1 x 2 [25 x 50] D, E, F 1" – 600# 2" – 150# 4.38 [111] 4.50 [114] 17 [430] 28 [12.7]1 x 2 [25 x 50] D, E, F 1" – 900# 2" – 300# 4.94 [126] 4.75 [121] 21 [534] 35 [15.9]

1 x 2 [25 x 50] D, E, F 1" – 1500# 2" – 300# 4.94 [126] 4.75 [121] 21 [534] 35 [15.9]1 x 2 [25 x 50] D, E, F 1" – 2500# 2" – 300# 4.94 [126] 4.75 [121] 21 [534] 39 [17.7]

11/2 x 2 [40 x 50] D, E, F 11/2" – 150# 2" – 150# 4.87 [124] 4.75 [121] 18 [448] 29 [13.2]11/2 x 2 [40 x 50] D, E, F 11/2" – 300# 2" – 150# 4.87 [124] 4.75 [121] 18 [448] 33 [15.0]

11/2 x 2 [40 x 50] D, E, F 11/2" – 600# 2" – 150# 4.87 [124] 4.75 [121] 18 [448] 33 [15.0]11/2 x 2 [40 x 50] D, E, F 11/2" – 900# 2" – 300# 5.87 [149] 5.50 [140] 22 [557] 44 [20.0]

11/2 x 2 [40 x 50] D, E, F 11/2" – 1500# 2" – 300# 5.87 [149] 5.50 [140] 22 [557] 44 [20.0]11/2 x 2 [40 x 50] D, E, F 11/2" – 2500# 2" – 300# 5.87 [149] 5.50 [140] 22 [557] 55 [25.0]

11/2 x 3 [40 x 80] G, H 11/2" – 150# 3" – 150# 5.12 [130] 4.87 [124] 19 [482] 38 [17.3]11/2 x 3 [40 x 80] G, H 11/2" – 300# 3" – 150# 5.12 [130] 4.87 [124] 19 [482] 42 [19.1]

11/2 x 3 [40 x 80] G, H 11⁄2" – 600# 3" – 150# 5.12 [130] 4.87 [124] 19 [482] 42 [19.1]11/2 x 3 [40 x 80] G, H 11/2" – 900# 3" – 300# 6.38 [162] 6.75 [172] 23 [584] 48 [21.8]

11/2 x 3 [40 x 80] G, H 11/2" – 1500# 3" – 300# 6.38 [162] 6.75 [172] 23 [584] 48 [21.8]11/2 x 3 [40 x 80] G, H 11/2" – 2500# 3" – 300# 6.38 [162] 6.75 [172] 23 [584] 65 [29.5]

2 x 3 [50 x 80] G, H, J 2" – 150# 3" – 150# 5.37 [136] 4.87 [124] 19 [482] 50 [22.7]2 x 3 [50 x 80] G, H, J 2" – 300# 3" – 150# 5.37 [136] 4.87 [124] 19 [482] 52 [23.6]

2 x 3 [50 x 80] G, H, J 2" – 600# 3" – 150# 5.37 [136] 4.87 [124] 19 [482] 53 [26.4]2 x 3 [50 x 80] G, H, J 2" – 900# 3" – 300# 6.56 [167] 6.75 [172] 23 [591] 79 [35.9]

2 x 3 [50 x 80] G, H, J 2" – 1500# 3" – 300# 6.56 [167] 6.75 [172] 23 [591] 79 [35.9]2 x 3 [50 x 80] G, H, J 2" – 2500# 3" – 300# 7.00 [178] 6.75 [172] 24 [601] 95 [43.2]

C

A

B



Notes:1. Higher rated outlet flanges available on

special order.

2. Series 200 pilot only. Add 6 inches for Series400 and 800 pilots, and 7 inches for Series 500pilot.

3. Series 200 pilot only. Add 12 lbs. for Series 400, 6 lbs. for Series 800 and 8lbs. for Series 500pilots.

4. 10" outlet flange available on special order for R orifice when specified with 300# or 600# inlet.


Flanged – Types 243/249/253/259, 443/453, 546, 843/853Available Dimensions Approximate

Size Equivalent Inlet Flange Outlet Flange1 A B C Approx.2 Weight3in [mm] Flow Areas RF or RJ RF in [mm] in [mm] in [mm] lb [kg]

3 x 4 [80 x 100] J, K, L 3" – 150# 4" – 150# 6.13 [156] 6.38 [162] 20 [508] 86 [39.1]3 x 4 [80 x 100] J, K, L 3" – 300# 4" – 150# 6.13 [156] 6.38 [162] 20 [508] 90 [41.0]

3 x 4 [80 x 100] J, K, L 3" – 600# 4" – 150# 6.38 [162] 6.38 [162] 20 [508] 92 [41.8]3 x 4 [80 x 100] J, K, L 3" – 900# 4" – 300# 7.50 [191] 7.12 [181] 25 [635] 121 [55.0]

3 x 4 [80 x 100] J, K, L 3" – 1500# 4" – 300# 7.50 [190.5] 7.12 [181] 25 [635] 138 [62.7]4 x 6 [100 x 150] L, M, N, P 4" – 150# 6" – 150# 7.75 [197] 8.25 [210] 23 [584] 138 [62.7]

4 x 6 [100 x 150] L, M, N, P 4" – 300# 6" – 150# 7.75 [197] 8.25 [210] 23 [584] 148 [69.3]4 x 6 [100 x 150] L, M, N, P 4" – 600# 6" – 150# 7.75 [197] 8.25 [210] 23 [584] 158 [71.8]

4 x 6 [100 x 150] L, M, N, P 4" – 900# 6" – 300# 9.81 [249] 9.19 [233] 29 [736] 228 [103.6]4 x 6 [100 x 150] L, M, N, P 4" – 1500# 6" – 300# 9.81 [249] 9.19 [233] 29 [736] 248 [112.7]

6 x 8 [150 x 200] Q, R 6" – 150# 8" – 150# 9.44 [240] 9.50 [241] 26 [660] 245 [111.4]6 x 8 [150 x 200] Q, R 6" – 300# 8" – 150#4 9.44 [240] 9.50 [241] 26 [660] 264 [120.0]

6 x 8 [150 x 200] Q, R 6" – 600# 8" – 150#4 9.70 [246] 9.50 [241] 26 [660] 308 [140.0]8 x 10 [200 x 250] T 8" – 150# 10" – 150# 10.88 [276] 11.06 [281] 30 [762] 516 [234.5]

8 x 10 [200 x 250] T 8" – 300# 10" – 150# 10.88 [276] 11.06 [281] 30 [762] 544 [247.3]8 x 10 [200 x 250] T 8" – 600# 10" – 150# 11.68 [297] 11.06 [281] 30 [762] 585 [265.9]

Threaded – Types 243/253, 443/453, 843/853Dimensions Approximate

Size Available Inlet Outlet A B C Approx.2 Weight3in [mm] Equivalent in [mm] in [mm] in [mm] in [mm] in [mm] lb [kg]

1 x 2 [25 x 50] D, E, F 1" [25] 2" [50] 3.57 [91] 2.88 [73] 17 [431] 22 [10.0]11/2 x 2 [40 x 50] D, E, F 11/2" [40] 2" [50] 3.57 [91] 2.88 [73] 17 [431] 22 [10.0]

11/2 x 2 [40 x 50] G, H 11/2" [40] 2" [50] 3.75 [95] 3.75 [95] 17 [431] 27 [12.3]

B

A

C

B

A

C

Flanged

C

B

A

Threaded

C

A

B

C

A

B




B B

A

C

Notes:1. Dual outlets not available for Type 269.

2. Higher rated outlet flanges available. Contactyour sales representative.

3. Series 200 pilot only. Add 5 inches for Series400 and 800 pilots, and 7 inches for Series 500pilot.

4. Series 200 pilot only. Add 12 lbs. for Series 400,6 lbs. for Series 800 and 8lbs. for Series 500pilots.

Type 263/2691, 463, 566, 863

Dimensions ApproximateA B C Weight4

Size Inlet Outlet RF RTJ RF Approx.3 Single Dualin [mm] Flange Flange in [mm] in [mm] in [mm] in [mm] lb [kg] lb [kg]

11/2 x 2 [40 x 50] 150# RF or RTJ 150# RF 3.62 [92] 3.87 [98] 4.50 [114] 18 [457] 31 [14.1] –

11/2 x 2 [40 x 50] 300# RF or RTJ 150# RF 3.75 [95] 4.00 [102] 4.50 [114] 18 [457] 34 [15.5] –

11/2 x 2 [40 x 50] 600# RF or RTJ 300# RF 4.06 [103] 4.06 [103] 5.24 [133] 18 [457] 38 [17.3] –

11/2 x 2 [40 x 50] 900# RF or RTJ 300# RF 4.43 [113] 4.43 [113] 5.24 [133] 22 [558] 48 [21.8] –

11/2 x 2 [40 x 50] 1500# RF or RTJ 300# RF 4.43 [113] 4.43 [113] 5.24 [133] 22 [558] 48 [21.8] –

2 x 3 or 2 x 3 x 3 [50 x 80] 150# RF or RTJ 150# RF 4.56 [115] 4.81 [122] 5.31 [135] 19 [482] 55 [25.0] 75 [34.1]



2 x 3 x 3 [50 x 80] 900# RF or RTJ 300# RF 5.69 [145] 5.75 [146] 7.16 [182] 24 [619] – 108 [49.1]

2 x 3 x 3 [50 x 80] 1500# RF or RTJ 300# RF 5.69 [145] 5.75 [146] 7.16 [182] 24 [619] – 108 [49.1]




3 x 4 x 4 [80 x 100 x 100] 900# RF or RTJ 300# RF 6.37 [162] 6.44 [164] 8.70 [221] 27 [685] – 175 [79.5]

3 x 4 x 4 [80 x 100 x 100] 1500# RF or RTJ 300# RF 7.66 [195] 7.72 [196] 8.70 [221] 29 [736] – 190 [86.4]




4 x 6 x 6 [100 x 150 x 150] 900# RF or RTJ 150# RF 9.21 [234] 9.27 [236] 7.38 [188] 28 [711] – 190 [86.4]

6 x 8 or 6 x 8 x 8 [150 x 200 x 200] 150# RF or RTJ 150# RF 8.87 [225] 9.12 [232] 8.25 [210] 27 [685] – 245 [111]



8 x 8 x 8 [200 x 200 x 200] 150# RF or RTJ 150# RF 10.44 [265] 10.69 [272] 11.44 [291] 31 [762] – 520 [236]

8 x 8 x 8 [200 x 200 x 200] 300# RF or RTJ 150# RF 10.94 [278] 11.25 [286] 11.44 [291] 32 [787] – 545 [247]

8 x 8 x 8 [200 x 200 x 200] 600# RF or RTJ 150# RF 11.12 [282] 11.25 [286] 11.44 [291] 32 [787] – 585 [265]

[200 x 250] or8 x 10 or 8 x 10 x 10[200 x 250 x 250]

150# RF or RTJ 150# RF 10.25 [260] 10.50 [267] 11.06 [281] 33 [838] 594 [270] 625 [284]

8 x 10 or 8 x 10 x 10[200 x 250] or[200 x 250 x 250]

300# RF or RTJ 150# RF 10.93 [278] 11.25 [286] 11.06 [281] 33 [838] 617 [280] 650 [295]

8 x 10 or 8 x 10 x 10 [200 x 250 x 250] 600# or RF or RTJ 150# RF 11.75 [299] 11.81 [300] 11.06 [281] 33 [838] 655 [297] 690 [313]

10 x 14 [254 x 356] 150# RF 150# RF 12.06 [306] – 13.75 [349] 37 [940] 995 [451] –10 x 14 [254 x 356] 300# RF 150# RF 12.75 [324] – 13.75 [349] 37 [940] 1010 [458] –

C

A

BB



B

A

C

B

A

CCC

AA

DB

B

Series 700 Dimensions and Weights

Dimensions Valve Basic A B C (max.) D WeightSize Model in [mm] in [mm] in [mm] in [mm] lb [kg]

Class 150

2G3 72705G23 6.06 [154] 6.38 [162] 16.84 [428] 11.87 [301] 93 [42.2]2H3 72705H23 6.06 [154] 6.38 [162] 16.84 [428] 11.87 [301] 93 [42.2]2J3 72705J23 6.06 [154] 6.38 [162] 16.84 [428] 11.87 [301] 93 [42.2]3J4 72705J34 7.25 [184] 7.56 [192] 18.01 [457] 13.64 [346] 141 [64.0]3K4 72705K34 7.25 [184] 7.56 [192] 18.01 [457] 13.64 [346] 141 [64.0]3L4 72705L34 7.25 [184] 7.56 [192] 18.01 [457] 13.64 [346] 141 [64.0]4L6 72705L46 7.75 [197] 8.75 [222] 18.34 [466] 12.47 [317] 220 [100.0]4M6 72705M46 7.75 [197] 8.75 [222] 18.34 [466] 12.47 [317] 220 [100.0]4N6 72705N46 7.75 [197] 8.75 [222] 18.34 [466] 12.47 [317] 220 [100.0]4P6 72705P46 7.75 [197] 8.75 [222] 18.34 [466] 12.47 [317] 220 [100.0]6Q8 72705Q68 9.44 [240] 9.50 [241] 19.56 [497] 13.78 [350] 350 [159.1]6R8 72705R68 9.44 [240] 9.50 [241] 19.56 [497] 13.78 [350] 350 [159.1]6RR8 72705RR68 9.44 [240] 9.50 [241] 19.56 [497] 13.78 [350] 350 [159.1]8T10 72705T810 10.88 [276] 11.00 [279] 22.50 [572] 16.34 [415] 750 [340.9]

Class 300


Class 600


Notes:1. All weight and dimensions are approximate

depending on the size and accessories.

2. When specifying MDP Manifold Dual Pilotincrease the valve weight by 40 lb [18.2 kg].




ANGMC-0243_Nov 2011_Nov 2011 page 61

Maximum Set PressureSize Orifice Outlet Flange psig [barg]

1.5 x 2 Full Bore 300# 2101 [144]2 x 3 J 300# 4624 [318]

2 x 3 Full Bore 150# 952 [65]3 x 4 L 150# 1426 [98]

3 x 4 L 300# 3630 [250]3 x 4 Full Bore 150# 710 [49]

3 x 4 x 4 Full Bore 300# 3638 [250]4 x 6 P 150# 1426 [98]

4 x 6 P 300# 3630 [250]4 x 6 Full Bore 150# 1027 [70]

4 x 6 x 6 Full Bore 150# 2068 [142]6 x 8 Q 150# 1454 [100]

6 x 8 R 150# 1020 [70]6 x 8 Full Bore 150# 822 [56]

8 x 8 x 8 Full Bore 150# 1204 [83]8 x 10 T 150# 985 [67]

8 x 10 Full Bore 150# 691 [47]8 x 10 x 10 Full Bore 150# 1394 [96]

Outlet Flange RatingsThe user is cautioned that the outlet flange of any PRV should be selected based upon the backpressure developed at the flange during a relief cycle or worst case scenario.

As an example, for valves listed in this catalog that are installed to discharge through a tailpipeto atmosphere, the following maximum set pressures can be accommodated. These maximumset pressures are calculated based upon:

• Schedule 40 tailpipe, absolute roughness 0.00015, L/D = 15

• Total actual valve capacity at 10% overpressure

• Compressible flow (k = 1.4)

• Carbon steel bodied valves (SS valve ratings are at 97% of those listed)


ANGMC-0243_Nov 2011_Nov 2011 page 62

Direct spring operated pressure relief valvesAnderson Greenwood's premium performance direct spring operated pressure relief valves usespecial internals and soft seats to provide optimum, accurate performance. Specific valve typesare available for gas, vapor, liquid, gas or liquid thermal relief, and steam applications.

Series 60 and 80 Pressure Relief Valves

Type 81P Relief Valve for Liquid Service

Tank protection productsAnderson Greenwood tank protection products offer a high performance alternative to springand weight-loaded relief devices for low pressure systems. The Series 90 and 9000 group ofproducts is a very wide range of both pressure and vacuum relief valves, primarily designed forprotecting low pressure storage vessels and tanks, as well as low pressure piping systems. Theyare designed to meet the requirements of ASME VIII and API 2000; many models also satisfyIMO and other marine regulations.

Series 9700 Severe Service Vents

Series 90 and 9000 Low Pressure Relief Valves

Tank Blanketing Regulators

Safety selector valveAnderson Greenwood developed the patented, Safety Selector Valve in response to the growingdemand for cost-effective, dual pressure relief valve and/or rupture disc installations in today’sprocess industries. The Safety Selector Valve is designed specifically to function as an effective“switchover” device that permits routine or emergency servicing of redundant pressure reliefdevices with no process interruption, providing continuous system overpressure protection.

Type 9300

Series 80

Other Anderson Greenwood offerings

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