Flapper check valve

Details Flapper check valve Flapper check valve

1976-02-02

1977-08-23

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

137527, F16K 1503

Patent

active

040433587

ABSTRACT:
Two half-discs of a flapper type check valve are mounted on an internally supported shaft in a two piece valve body to swing from a coplanar closed position to a back-to-back relationship when the valve is fully open. Stops integrally formed within a bell-shaped downstream part of the valve body engage mating parts of the half-discs when the valve is in fully open condition with the half-discs so positioned behind a transverse rib that there is no interference with flow. The two pieces of the valve body each have external circumferential grooves for easy attachment to other piping elements.

REFERENCES:
patent: 3023771 (1962-03-01), Hinds
patent: 3026901 (1962-03-01), Wheeler, Jr.
patent: 3374804 (1968-03-01), Stegerud
patent: 3538946 (1970-11-01), Hilsheimer
patent: 3612098 (1971-10-01), Bora et al.
patent: 3678958 (1972-07-01), Satterwhite
patent: 3934608 (1976-01-01), Guyton
patent: 3937168 (1976-02-01), Doak

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