Patent ID: 6024121
Filing Date: 2000-02-15
Classification: F16K,Y10T

Abstract:
A check valve comprising:a valve housing having a pair of opposite end faces comprising an upstream end face and a downstream end face, said valve housing having a fluid passage extending axially therethrough between said upstream end face and said downstream end face;a first seating surface formed within said valve housing around said fluid passageway and adjacent to said upstream end face;a seating ring having a second seating surface adapted to engage said first seating surface; andan o-ring sized to reside between said first seating surface and said second seating surface when said seating ring and said valve housing are placed in engagement to axially maintain said seating ring and valve housing in fixed relation to each other and to seal fluid from passing between said first seating surface and said second seating surface, wherein said o-ring comprises both a mechanical support and a hydraulic support.