Tank valve apparatus

Details Tank valve apparatus Tank valve apparatus

1979-01-22

1981-02-17

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

74 182, 92168, 60533, 251144, 251279, 251280, F16K 31122

Patent

active

042510490

ABSTRACT:
A tank valve apparatus particularly adapted for effecting rapid discharge of the liquid contents of a tanker truck or the like, the apparatus being characterized by an improved valve opening apparatus actuated by an air cylinder. The cylinder includes a single acting piston requiring a certain cylinder pressure to move the valve to its open position, but requiring a significantly lower pressure to permit its return stroke, whereby rapid closure of the tank valve is facilitated.

REFERENCES:
patent: 2004715 (1935-06-01), Thwaits
patent: 2004717 (1935-06-01), Thwaits
patent: 2246348 (1941-06-01), Coffey
patent: 2535590 (1950-12-01), Monsarrat
patent: 2652070 (1953-09-01), Marx
patent: 3043338 (1962-07-01), Hanson
patent: 3266383 (1966-08-01), Cairns
patent: 3391646 (1968-07-01), Schlosser
patent: 3420495 (1969-01-01), Muehl
patent: 3742772 (1973-07-01), Makovee
patent: 3786903 (1974-01-01), Haga et al.

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