Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1996-05-20
1999-11-16
Chambers, A. Michael
Fluid handling
Systems
Flow path with serial valves and/or closures
1375195, 137460, F16K 1500
Patent
active
059839350
ABSTRACT:
An LP gas container valve to be mounted on a propane gas container is provided for preventing a fire, explosion or other accident at the time of a disaster. The LP gas container valve comprises a valve body having a valve outlet and a gas passage leading from an inlet connection to a propane gas container to the valve outlet, a closing valve (attached to the valve body) for opening and closing the gas passage, a safety valve (attached to the valve body) actuated in response to an excessive elevation in gas pressure, a branching point in the gas passage leading to the safety valve, and a ball located in the gas passage between the branching point and the closing valve. The ball is movable between its stationary position in normal operation and its gas cutting off position in response to an excessive elevation in gas pressure, both of which are located between the closing valve and the branching point in the gas passage. The LP gas container also includes a tapered portion of the gas passage in the vicinity of the gas cutting off position of the ball to narrow the gas passage adjacent to the closing valve. At the time of an excessive outflow of gas from the gas container toward the valve outlet, the ball abuts against the tapered portion to close the gas passage.
REFERENCES:
patent: 3247862 (1966-04-01), Burke
patent: 3709255 (1973-01-01), Ciotti
patent: 3941145 (1976-03-01), Morain et al.
patent: 4026284 (1977-05-01), Boehringer
patent: 4635680 (1987-01-01), Fang
patent: 4649952 (1987-03-01), Jobe
patent: 5232019 (1993-08-01), Wolff et al.
Aichi Koatsu Co., Ltd.
Chambers A. Michael
Frank Robert J.
Petruzzelli Julie A.
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