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Pilot Operated Pressure Relief Valves


Anderson Greenwood
Today, Anderson Greenwood, in conjunction with its network of direct and independent representatives and assemblers, is regarded as the worldwide technology leader in research, design and manufacture of high performance, metal and soft seated pilot-operated relief valve products.

Series 200 Pressure Relief Valves
Anderson Greenwood 200 pop action, safety valve with non-flowing pilot, provides system overpressure protection you can count on. Since its 1966 introduction, it has been continuously refined and remains the standard against which all other pilot operated valves are compared. The Series 200 is a no-flow, pop action POPRV design principally intended for gas applications. Suitable for severe service where dirt, hydrates and high moisture levels occur in the fluid media, the Series 200 is the industry standard for pop action POPRVs.

Orifice Sizes: D through T, Full bore valves also available
Connections: 1" x 2" to 8" x 10" (8" x 10" x 10" for full bore)
Inlet Flange Ratings: ANSI 150, 300, 600, 900, 1500, 2500
Maximum Range: -423°F to +500°F [-253°C to +260°C]
Minimum Pressure: 25 psig [1.72 barg]
Maximum Pressure: 10,000 psig [690 barg]

Series 400 Pressure Relief Valves
The Series 400 modulating valve, with non-flowing pilot, incorporates an advanced design in pilot operated valves. Under process conditions, both pilot and main valve can be tight as high as 98 percent of set pressure. The main valve lifts proportionally, according to demand, restricting product loss to only that which must be relieved to prevent process pressure from exceeding the code allowance. The Series 400 is a no-flow, modulating action POPRV design suitable for gas, liquid and two-phase applications. The Series 400 represents the very best state of the art technology providing safety relief valve performance not possible from direct spring PRVs.

Orifice Sizes: D through T, Full bore valves also available
Connections: 1" x 2" to 8" x 10"
Inlet Flange Ratings: ANSI 150, 300, 600, 900, 1500, 2500
Temperature Range: -65°F to +500°F [-54°C to +260°C]
Minimum Pressure: 15 psig [1.03 barg]
Maximum Pressure: 1,480 psig [102 barg]

Series 500 Pressure Relief Valves
The Anderson Greenwood Series 500 is a unique soft-seated safety relief valve designed to handle higher temperatures. It was created with a specific design objective: to decrease the leakage associated with metal-seated safety relief valves under extreme operating temperature conditions. The Series 500 is a modulating action POPRV design suitable for hot water, steam (ASME section VIII Unfired Pressure Vessels), hot hydrocarbon vapors or liquids, and corrosive services. Its unique design enables the main valve to be tight at pressures up to set point. After relieving and reseating, it stays bubble-tight, cycle after cycle.

Orifice Sizes: D through T, Full bore valves also available
Connections: 1" x 2" to 8" x 10"
Inlet Flange Ratings: ANSI 150, 300, 600
Maximum Range: -65°F to +515°F [-45°C to +268°C]
Minimum Pressure: 15 psig [1.03 barg]
Maximum Pressure: 720 psig [49.6 barg]

Series 700 Pressure Relief Valves
The Anderson Greenwood Series 700 pilot operated safety valve is unique as an all metal seated pilot and main valve. This extends the use of pilot technology to temperatures up to 1000°F [538°C]. The valve is suitable for steam and/or gas service. The Series 700 safety valve has been specifically designed to provide a valve with premium seat tightness on high temperature gas and steam service. The Series 700 has all metal seating surfaces and is ASME Section VIII.

Orifice Sizes: G through T
Connections: 2" x 3" to 8" x 10"
Inlet Flange Ratings: ANSI 150, 300, 600, 900
Maximum Temperature: 1000°F [538°C]
Minimum Pressure: 50 psig [3.5 barg]
Maximum Pressure: 1,200 psig [83 barg]

Series 800 Pressure Relief Valves
The Series 800 modulating valve utilizes the most advanced design in pilot operated valves. The non-flowing, modulating pilot can be set at pressures up to 6170 psig [425.5 barg]. Under these process conditions, the pilot and main valve can be tight up to 98 percent of set pressure. The Series 800 is a no-flow, modulating action POPRV design suitable for gas, liquid and two-phase applications. The Series 800 represents the state of the art technology in high pressure overpressure protection by providing safety relief valve performance not possible from direct spring PRVs.

Orifice Sizes: D through T, Full bore valves also available
Connections: 1" x 2" to 8" x 10"
Inlet Flange Ratings: ANSI 150, 300, 600, 900, 1500, 2500
Maximum Range: -40°F to +400°F [-40°C to +205°C]
Minimum Pressure: 1,481 psig [102.1 barg]
Maximum Pressure: 6,170 psig [425.5 barg]











 

 








 

 




 

 

 

 





 

 




 

 


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