Two piece check valve

Details Two piece check valve Two piece check valve

1974-09-19

1976-04-13

Cohan, Alan

Fluid handling

Line condition change responsive valves

Direct response valves

137315, F16K 1500, F16K 1700, F16K 2104

Patent

active

039497801

ABSTRACT:
A two piece check valve assembly comprising a retainer and a valve assembled thereto, the assembly having primary usage in hydraulic and pneumatic systems operating at a low differential pressure of fractions of ounces to over a hundred pounds per square inch. The check valve assembly comprises a retainer and a valve including a dome-shaped element and is adapted for use in a tubular member wherein the retainer grips the inner face of the tubular wall to position the valve assembly and the dome-shaped element fits against the inner wall of the tubular member. Pressure within the dome element causes it to expand and snugly engage the inner wall of the tubular member to cut off flow.

REFERENCES:
patent: 2282987 (1942-05-01), Bennett
patent: 2329960 (1943-09-01), Verheul
patent: 2912999 (1959-11-01), Kersh
patent: 2913000 (1959-11-01), Roberts
patent: 2954043 (1960-09-01), Canalizo
patent: 3022796 (1962-02-01), Cummings
patent: 3250219 (1966-05-01), McCarty et al.
patent: R21323 (1940-01-01), Langdon

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