Pressure-retaining valve and method of retaining pressure

Details Pressure-retaining valve and method of retaining pressure Pressure-retaining valve and method of retaining pressure

1981-03-23

1983-02-08

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

137493, 1375395, 222545, F16K 1726

Patent

active

043723438

ABSTRACT:
A cylinder valve is adapted to be mounted on a container storing a pressurized fluid. The cylinder valve has a main gate valve which is selectively operable to control the flow of such fluid. The cylinder valve further includes a pressure-retaining valve which automatically closes, when the pressure differential between the inlet and outlet falls below a predetermined minimum, to prevent further flow from the cylinder, independent of the operation of the gate valve. The pressure-retaining valve includes a ball biased to move toward an O-Ring, and adapted to pass through the O-Ring when the container is refilled.

REFERENCES:
patent: 2192141 (1940-02-01), McElwaine
patent: 2415258 (1947-02-01), Parker et al.
patent: 3285274 (1966-11-01), Bouvier
patent: 3981328 (1976-09-01), Yonezawa
patent: 4210168 (1980-07-01), Yonezawa

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