Check valve

Details Check valve Check valve

1975-08-04

1976-10-05

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137543, F16K 1506

Patent

active

039838994

ABSTRACT:
A check valve having a body with an inlet and an outlet which are coaxially aligned and a valve element including a section of a sphere which is spring loaded urging the valve element towards and sealing against the inlet. The valve element is supported on a stem which is coaxially movable in the valve body. The body has a cavity of a cross-sectional area greater than the valve element by an amount at least as great as the area of the inlet whereby the valve avoids restricting the flow of fluid through the body. Locking means are provided for locking the valve element in the closed position.

REFERENCES:
patent: 455001 (1891-06-01), Lonergan
patent: 1322076 (1919-11-01), Wheaton
patent: 1372063 (1921-03-01), Carruth
patent: 1380586 (1921-06-01), Pelletier
patent: 1568940 (1926-01-01), Dooley
patent: 2301378 (1942-11-01), Crista

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