Non-flowing modulating pilot operated relief valve

Details Non-flowing modulating pilot operated relief valve Non-flowing modulating pilot operated relief valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/39.1

F16K 31/122 (2006.01) F16K 17/10 (2006.01)

Patent

CA 1254483

Abstract of the Disclosure A pilot operated pressure relief valve system having a modulating action. The pilot valve is of the non-flowing type and comprises sleeve and control stem members translating within a channel. The sleeve member comprises an exhaust valve for relieving dome pressure on the relief valve when lifted by the control stem. The control stem translates in response to system pressure changes and comprises an inlet valve cooperating with a seat on the sleeve member to form an inlet valve closable to isolate the dome from the system pressure when the latter reaches a level predetermined in relation to a set pressure.

507216

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