Asymmetrical check valve

Details Asymmetrical check valve Asymmetrical check valve

1998-04-16

1999-08-03

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Direct response valves

137846, 137844, 137843, 251358, F16K 1514

Patent

active

059311975

ABSTRACT:
An asymmetrical check valve has an inlet end, a transition part and an outlet end, with a pair of vertical lips facing one another. The lips may be flat or they may be curvilinear. The check valve is asymmetric about a horizontal longitudinal plane through the check valve. The bottoms of the transition part and outlet end may be aligned, with a major portion of the lips extending above the horizontal plane. It is thus possible to install conventional or wide bill check valves in installations with little or no clearance between the outlet end and ground level.

REFERENCES:
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patent: 3167089 (1965-01-01), Gordon
patent: 3565106 (1971-02-01), Baumbach
patent: 3595266 (1971-07-01), Brookman et al.
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patent: 4492253 (1985-01-01), Raftis
patent: 4585031 (1986-04-01), Raftis et al.
patent: 4607663 (1986-08-01), Raftis et al.
patent: 4993452 (1991-02-01), Hough
patent: 5769125 (1998-06-01), Duer et al.
patent: 5881772 (1999-03-01), Bennett

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