Load check and bypass valve

Details Load check and bypass valve Load check and bypass valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/91

F16K 15/00 (2006.01) F15B 13/01 (2006.01)

Patent

CA 1037348

LOAD CHECK AND BYPASS VALVE ABSTRACT A load check and bypass valve includes a check valve providing fluid flow from an inlet-outlet port to a motor port while blocking reverse flow therethrough and a bypass valve resiliently biased to a closed position for blocking fluid flow through a bypass connecting the motor port with the inlet-outlet port. The bypass valve has an opened position permitting fluid flow therethrough and is movable to its opened position by a selectively controllable actuating device. A first force exerting device is provided for exerting a force on the bypass valve urging it towards its opened position and is connected to the motor port by a first passage. A second force exerting device is provided for exerting a force on the bypass valve urging it towards its closed position and is connected to the motor port through a second passage. A check valve is disposed in the second passage providing fluid flow therethrough from the motor port to the second force exerting device while blocking reverse fluid flow therethrough. An orifice communicates with the second passage between the check valve and the second force exerting device.

274065

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