Dump valve for a high pressure fluid system

Abstract

A dump valve for a high pressure fluid line includes a base, a fitting secured to the base and adapted to be interposed along the high pressure fluid line. The fitting defined an internal manifold having a dump port in communication with the manifold. A hydraulic or pneumatic cylinder is mounted on the base at a position for forcing a valve member into a valve closed position in engagement with a valve seat within the dump port. The fluid cylinder exerts a continuous force to maintain the valve member in the valve closed position against the urging of fluid pressure within the manifold. In an emergency condition, the fluid cylinder allows the valve member to withdraw from the valve seat, thereby ejecting pressurized fluid from the dump port.

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