Double block and vent system

Details Double block and vent system Double block and vent system

F - Mech Eng,Light,Heat,Weapons

16

K

251/13

F16K 1/44 (2006.01) F16K 25/02 (2006.01)

Patent

CA 1315763

ABSTRACT A valve assembly for use in the passage of fluid in a conduit system wherein the valve assembly possesses an actuator part and a valve part for controlling the flow of fluid therein while simultaneously providing means for purging any residual fluid trapped within the valve assembly when the valve is in its closed position. The valve part of the valve assembly is made up of a cage means housing two flow-to-close valve members which are independently spring biased in the closed position. Placed within this cage member are venting means which provide a passage for trapped gases to escape through a vent duct system when the valve is in its closed position, but restricting the vent means when the valve is in its full open position.

582463

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