Patent ID: 6155284
Filing Date: 2000-12-05
Classification: F16K,Y10T

Abstract:
A relief valve, comprising:(a) a body having at least one fluid inlet port communicating through a valve seat to at least one fluid outlet port;(b) a primary piston assembly having a piston cylinder, a primary stem having an exterior surface and at least one pin arm;(c) a latch releasably engaging the exterior surface of the primary stem and releasably securing the piston cylinder in engagement with the valve seat;(d) a sensor assembly for monitoring system pressure having a sensing member, a sensing stem and at least one latch arm, wherein the sensing member is in fluid communication with the fluid inlet port and the latch arms releasably secure the latch against the primary stem; and(e) at least one buckling pin coupled to the sensor assembly to oppose forces placed on the sensing member wherein failure of the buckling pin causes the latch arms to release the latch allowing the primary piston assembly to disengage from the valve seat which provides fluid communication between the fluid inlet ports and the fluid outlet ports.