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 ...

Many combined cycle power plants are being operated as peaker plants, rather than as baseload units. That can pose a problem for economizer safety valves. Pilot-operated safety valves offer several… ...

Operated via solid-state controls, the actuator opens and closes the valve by turning a rotor 90 degrees within the valve body. Should a signal or power loss occur, actuation can also be done via ...

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 ...