Feathering valve assembly

Details Feathering valve assembly Feathering valve assembly

F - Mech Eng,Light,Heat,Weapons

15

B

137/95

F15B 13/00 (2006.01) F15B 13/043 (2006.01)

Patent

CA 1074662

Abstract of the Disclosure A feathering valve system for modulating the fluid inflow to a selected one of first and second spool ends of a spool valve assembly. A controller is electrically coupled to first and second solenoid operated pilot valve assemblies for selectively (13 maintaining the pilot valve assemblies in a valve closed state without bleed flow through the pilot orifices or (2) supplying a predetermined value electrical signal to either, but not both, of the valve assemblies for actuating one of the assemblies to an open position related to the value of the signal. Fluid under a substantially constant pilot pressure is applied under the poppets of both valve assemblies. Fluid flow is taken from above the poppet of an actuated valve assembly to a respective spool end whereby the spool moves to a position which is a function of the actuating signal value.

282703

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