The BERMAD FP-3HC-R is a high capacity diaphragm actuated Pressure Relief Pilot Valve. This pilot valve is actuated by a pressure responsive, spring loaded diaphragm, which tends to reach equilibrium with the adjustable pre-set spring force, thereby relieving or sustaining the chosen pre-set inlet/upstream pressure value. The FP-3HC-R is intended for use in the control loop of BERMAD large diameter pilot operated pressure relief / sustaining valves