Check valve with exchangeable valving elements

Details Check valve with exchangeable valving elements Check valve with exchangeable valving elements

1991-10-31

1993-03-23

Cohan, Alan

Fluid handling

Convertible

Reversible check

13753311, 13753319, 13753321, 137543, F16K 1504, F16K 1506

Patent

active

051955520

ABSTRACT:
A check valve wherein the housing has an inlet and a seat at one end and an outlet at the other end. The other end can receive a removable and reinsertable cage which serves to confine a selected one of several spherical and/or otherwise configurated valving elements to movements between a sealing position of engagement with the seat to seal the inlet from the outlet and an inoperative position in which the housing, the selected valving element and the cage define a path for the flow of a fluid from the inlet toward, through and beyond the outlet. The inserted valving element is biased against the seat by a spring or by the fluid when the pressure of fluid at the outlet exceeds the pressure of fluid at the inlet.

REFERENCES:
patent: 3620653 (1971-11-01), Gaylord
patent: 3648729 (1972-03-01), Balkany
patent: 3664368 (1972-05-01), Sweeney
patent: 3902518 (1975-09-01), Fischer
patent: 3995658 (1976-12-01), Hager
patent: 4203466 (1980-05-01), Hager
patent: 4368755 (1983-01-01), King
patent: 4862913 (1989-09-01), Wildfang

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