Fluid handling – With repair – tapping – assembly – or disassembly means – Removable valve with normally disabled supplemental check valve
Patent
1974-08-02
1976-01-06
Cohen, Irwin C.
Fluid handling
With repair, tapping, assembly, or disassembly means
Removable valve with normally disabled supplemental check valve
137 71, 1374936, 1376142, 222 3, F17C 1304
Patent
active
039305171
ABSTRACT:
A high pressure gas tank safety and service valve which comprises a body portion that sealingly engages a threaded opening of a high pressure gas tank. The valve has a flow passage that communicates the interior of the gas tank to an outlet port of the safety and service valve; the flow passage including first and second axially spaced valve seats which are, respectfully, engageable by first and second valve members interconnected by a safety rod. The first valve member is operable to open and close communications between the interior of the high pressure gas tank and the outlet port of the valve to permit selected exhausting of the gas tank. The second valve member is normally bias toward engagement with the second valve seat and in the event of a fracture resulting in the escape of gas, the second valve member will automatically close communications from the tanks. A third valve seat disposed between the interior of the tank and the second valve member is engagable by a third valve operable to close communication with the interior of the tank when the pressure therein drops to a predetermined minimum valve. The third valve member carries a valve element which facilitates repressurization of the tank while the third valve member is engaged with its associated valve seat.
REFERENCES:
patent: 1411483 (1922-04-01), Floyd
patent: 1698616 (1929-01-01), Woodham
patent: 2563244 (1951-08-01), Holicer
patent: 3405732 (1968-10-01), Dow
patent: 3701363 (1972-10-01), Schuler
Cohen Irwin C.
Gerard Richard
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