Flow control system for a valve

Details Flow control system for a valve Flow control system for a valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 39/02 (2006.01) F16K 31/06 (2006.01)

Patent

CA 2487884

A fluid-flow control system for a valve comprises a valve body and a bi directional main flow passage between a first and second fluid areas. The shuttle piston having a first face in direct communication with the second area and a second face in communication therewith through a bleed orifice. The second face is alternately exposed to the first fluid area through a backpressure passage and second orifice which alters the pressure differential across the shuttle piston. A second valve such as a solenoid operates to either close the second orifice wherein the shuttle piston is operable under differential pressure between the first and second pressure areas, or to close the second orifice wherein the shuttle piston is operable under differential pressure between the second pressure area and the backpressure passage. Filters at the fluid inlet and outlets protect the sealing components therein.

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