Bidirectional pilot operated control valve

Details Bidirectional pilot operated control valve Bidirectional pilot operated control valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 31/12 (2006.01) F16K 31/40 (2006.01)

Patent

CA 2340565

A pilot operated valve is provided to control a bidirectional flow of fluid between two ports. A main poppet selectively controls flow of fluid between the ports in response to pressure in a control chamber on one side of the main poppet. A pilot passage in the main poppet extends between the second port and the control chamber. A first pair of check valves allow fluid to flow only into the pilot passage from the two ports. A second pair of check valves allow fluid to flow only into the control chamber from the two ports.

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