Gas shut-off valve

Details Gas shut-off valve Gas shut-off valve

1982-01-18

1984-09-04

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

251 46, 251 613, F16K 1704

Patent

active

044691246

ABSTRACT:
A shut-off valve includes a valve stem or actuating member operatively connected to a pressure-responsive apparatus. The pressure-responsive apparatus is acted upon by fluid in a pressure chamber such that the valve mechanism is held open to permit fluid flow therethrough. A spring or biasing means is provided that automatically closes the valve mechanism whenever the pressure chamber is evacuated or depressurized such that the pressure-responsive apparatus can no longer maintain the shut-off valve in an open position.

REFERENCES:
patent: 1615776 (1927-01-01), Slater
patent: 2027762 (1936-01-01), Becker
patent: 2418743 (1947-04-01), Baker
patent: 2472070 (1949-06-01), Garretson
patent: 2688975 (1954-09-01), Born
patent: 2948262 (1960-08-01), Gratzmuller
patent: 3007480 (1961-11-01), Stalnecker
patent: 3023996 (1962-03-01), Robertson
patent: 3511269 (1970-05-01), Kaatz
patent: 3661173 (1972-05-01), Bauer
patent: 3692047 (1972-09-01), Camp
"Pete's Plug", Peterson Equipment Company Brochure Bulletin 152I for "Reliance Type PLVM", American Meter Division, Singer Company

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