Vent valve for a mobile tank

Details Vent valve for a mobile tank Vent valve for a mobile tank

1979-05-21

1981-09-15

Schwadron, Martin P.

Fluid handling

Systems

System with plural openings, one a gas vent or access opening

1376371, 251 636, 251 98, F16K 2400, F16K 3500

Patent

active

042891639

ABSTRACT:
A mobile tank for transporting liquids has a vent valve with a safety device to assure that the vent valve is always open during draining, to relieve vacuum build-up. The vent valve is coupled to a vent port in the top of the tank, and operates on air pressure. The air pressure is controlled by a control valve mounted near the discharge valve. The control arm on the control valve is mounted in an interfering position with the discharge valve, requiring the air control valve to be opened before the tank discharge valve can be opened.

REFERENCES:
patent: 1585512 (1926-05-01), Roades
patent: 2096374 (1937-10-01), Jensen
patent: 2249090 (1941-07-01), Rabinowicz
patent: 2730126 (1956-01-01), Jensen
patent: 2748799 (1956-06-01), Roth
patent: 3048189 (1962-08-01), Chandler
patent: 3070123 (1962-12-01), Chandler
patent: 3115894 (1963-12-01), Marx
patent: 3158406 (1964-11-01), Aller
patent: 3415273 (1968-12-01), Elboger
patent: 3770011 (1973-11-01), Muchi
patent: 4036255 (1977-07-01), Wilson
patent: 4109677 (1978-08-01), Burnside
patent: 4137943 (1979-02-01), Rath

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