Clapper seal for check valves

Details Clapper seal for check valves Clapper seal for check valves

F - Mech Eng,Light,Heat,Weapons

16

K

137/56

F16K 15/03 (2006.01)

Patent

CA 1080081

ABSTRACT OF THE DISCLOSURE A check valve has a clapper pivotally mounted inside of a flow passage which clapper is formed by investment casting. The clapper of the check valve will only allow fluid flow in one direction. The face of the check valve has an annular groove formed therein and a recessed center portion. After a base surface is cut in the backside of the clapper, a molded rubber seal is formed on the face of the clapper with the seal extending from the annular groove with raised annular surfaces and a web covering the center portion. Upon receiving reverse flow through the check valve, the clapper will immediately close and seal against a valve surface. The raised annular surfaces deform into the annular recess therebetween allowing metal-to-metal contact between the clapper and valve surface, while simultaneously maintaining a good rubber seal contact.

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