Power assisted check valve

Details Power assisted check valve Power assisted check valve

F - Mech Eng,Light,Heat,Weapons

04

B

137/65

F04B 13/02 (2006.01) B29B 7/80 (2006.01) F04B 7/00 (2006.01) F04B 7/02 (2006.01) F04B 53/10 (2006.01) F16K 15/18 (2006.01)

Patent

CA 1175317

ABSTRACT OF THE DISCLOSURE A power-assisted valve is provided which is particularly effective for systems handling viscous materials, such as certain metering systems. The check valve operates effectively even with highly-filled viscous resins used in such systems. The valve includes a valve seat and a valve ball which can be urged toward the valve seat to a closed position by a fluid-powered cylinder and piston. The piston rod is separate from the valve ball so that the ball can rotate relative to the valve seat.

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