Patent ID: 8887757
Filing Date: 2014-11-18
Classification: F16K,Y10T

Abstract:
1. A wafer check valve assembly comprising: a body member having a mating side and an inlet side, the body member mating side including first, second and third mating surfaces and a shaft groove, wherein a tapered surface of the mating side of the body member extends from the third mating surface of the body member toward the inlet side of the body member from a first end of a port opening to a second end of the port opening; a retainer member having a mating side and an outlet side, the retainer member mating side including fourth, fifth and sixth mating surfaces and a first gasketing material positioned proximal to the fifth mating surface; a disc member provided with a shaft member; wherein, when the body member, retainer member and disc member are releasably mated together: (i) at least a portion of the shaft member of the disc member is rotatably housed between the body member and the retainer member and within at least a portion of the shaft groove of the body member, (ii) at least a portion of the first and fourth mating surfaces are positioned proximal to one another, (iii) at least a portion of the second and fifth mating surfaces are positioned proximal to one another, and (iv) at least a portion of the third and sixth mating surfaces are positioned proximal to one another, so to define a mating pocket that houses the first gasketing material, the first gasketing material thereby forming a seal between the body member and the retainer member to releasably secure the body member, retainer member and the disc member together.