Fluid check valve

Details Fluid check valve Fluid check valve

1992-06-01

1993-09-21

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

F16K 1503

Patent

active

052460320

ABSTRACT:
A fluid check valve has a flapper assembly mounted in the bore of a valve body. The assembly has two flappers mounted on a hinge pin which is mounted at each end in holding members which fit against the bore of the valve. The hinge pin is mounted in elongate slots in the holding members which allow movement of the pin and hence the flappers along the axis of the valve. The elongate slots prevent any lateral or sideways movement of the pin. The holding members fit between the valve seat and a retaining projection or projections in the valve bore. Locating means retain the flapper assembly in position with the holding members between the seat and the projections.

REFERENCES:
patent: 3678958 (1972-07-01), Satterwhite
patent: 4257444 (1981-03-01), Ogle
patent: 4694853 (1987-09-01), Goodwin

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