Compressed gas emergency shutoff valve

Details Compressed gas emergency shutoff valve Compressed gas emergency shutoff valve

1997-11-07

1999-04-20

Fox, John

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

13761421, F16K 1734

Patent

active

058948597

ABSTRACT:
A safety valve or a compressed gas cylinder is formed by a tubular assembly projecting into the access port of the cylinder and axially controlling a control valve and elongated stem axially connected with the control valve projects into the passageway formed by the tubular valve assembly to maintain a valve off seat. In the event the control valve is damaged or broken off and the stem removed the safety valve is biased closed with its seat by pressure drop across the position of the valve seat with minimal loss of gas.

REFERENCES:
patent: 2633862 (1953-04-01), Dales
patent: 3159167 (1964-12-01), Mueller et al.
patent: 3645286 (1972-02-01), Follett
patent: 3850189 (1974-11-01), Follett
patent: 3930517 (1976-01-01), Gagala
patent: 4373548 (1983-02-01), Chou
patent: 4762140 (1988-08-01), Davis
patent: 5144973 (1992-09-01), Green et al.

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