Double action check valve

Details Double action check valve Double action check valve

1990-06-14

1991-11-05

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137504, F16K 1726

Patent

active

050624482

ABSTRACT:
A Double Action Check Valve is shown provided with a flexible membrane secured between the inlet and outlet members, the membrane having apertures or orifices interiorly of the perimeter; substantially ball-shaped members centrally carried on either side of the membrane and under increased volume of flow from the inlet or outlet side of the ball-shaped members carried by it move in concert with the membrane as the membrane is caused to bow out or flex on either side of the coupling member as dictated by the volume of flow.

REFERENCES:
patent: 2992652 (1961-07-01), Fellberg
patent: 3085589 (1963-04-01), Sands
patent: 3734115 (1973-05-01), McMath
patent: 4141379 (1979-02-01), Manske
patent: 4186768 (1980-02-01), Kuester
patent: 4196753 (1980-04-01), Hammarstedt

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