Balanced pivoted vane valve

F - Mech Eng,Light,Heat,Weapons – 15 – B

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F15B 13/02 (2006.01) F15B 13/04 (2006.01)

Patent

CA 1158492

ABSTRACT OF THE DISCLOSURE A control member for supplying a pressure responsive device with pressurized fluid in response to an input signal. The control member has a housing with a chamber therein. The chamber is connected to a source of pressurized fluid through an entrance port, to a pressure responsive device through first and second operational ports and to the surrounding environment through an exit port. A lever located in the chamber has a bore therein that is connected to the entrance port to define a flow path for the pressurized fluid through the chamber. Depending on a desired operation of the pressure responsive device, an Input signal is applied to the lever to bring the bore into communication with one of the first and second operational ports to allow pressurized fluid to flow to the pressure responsive device while the other operational port is connected to the surrounding environment through the chamber. When the input signal terminates, a pair of springs move the lever to a null position intermediate the first and second operational port to terminate the pressurized fluid communication to the pressure responsive device.

370890

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