For the past 15 years, pilot-operated safety relief valves (POSRVs) have effectively and reliably protected economizers on Section I power boilers in overpressure situations, working in tandem ...

The valve requires no elastomer seats or seal, which results in the ability to handle temperatures from –65 to 515°F (–54 to 268°C) and a set pressure range of 15 to 6,170 psig.

Curtiss-Wright’s Industrial Division Farris 3800L Series Pressure Relief Valve Receives ASME Approval Farris' 3800 Series Pilot Operated Relief Valve with Modulating Control (Photo: Business Wire) ...

Lee Company’s new High Pressure 500 Pilot Operated Chek is the latest addition to Lee’s line of miniature check valves. This valve acts like a normal check valve until pressure is applied to the pilot ...

The MOPV761 valve plays an integral part in the AFFF system. It controls both the seawater pressure used to activate the main AFFF supply valve and the electrical activation of the AFFF pump.

Flip a switch, down go the air bags. A manual (“pilot-operated,” as it’s often called) dump valve is simple to install, takes about two hours and costs less than $100.