Check valve

Details Check valve Check valve

1976-01-06

1977-10-18

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

137854, 1375123, F16K 1514

Patent

active

040541525

ABSTRACT:
A check valve has a valve member seated on a separating wall member in a housing to interrupt the flow of fluid. The valve member is formed to be unseated from the separating wall member in its free state so that the fluid may flow through a clearance between the valve member and the separating wall member when the pressure difference between one side of the separating wall member and the other is small, while it is formed to be seated on the separating wall member when the pressure difference has become larger. Therefore, the fluid can pass in the both directions crossing the separating wall member when the pressure difference is small, while it is interrupted when the pressure difference has increased.

REFERENCES:
patent: 2195335 (1940-03-01), Loginov
patent: 2271497 (1942-01-01), Newell
patent: 2502525 (1950-04-01), Krugler
patent: 2932322 (1960-04-01), Mercier
patent: 2948296 (1960-08-01), Thorburn
patent: 3322281 (1967-05-01), Gulick
patent: 3835884 (1974-09-01), Ishikawa et al.
patent: 3918483 (1975-11-01), Leeuwen

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