Diaphragm vent valve for fluid storage tank with vapor recovery

Details Diaphragm vent valve for fluid storage tank with vapor recovery Diaphragm vent valve for fluid storage tank with vapor recovery

1977-08-31

1979-02-06

Cline, William R.

Fluid handling

Systems

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

137586, 251 614, 220 85P, F16K 4500

Patent

active

041379438

ABSTRACT:
A tank for volatile fluid is fitted with a diaphragm vent valve as an integral portion of a system in which both emission control regulations and safety regulations are met.
Vapors are recovered in this system but more importantly, the tank such as the one on a tank truck, cannot be filled through a bottom loading valve normally provided near the bottom of the tank, unless the vent valve is open. The vent valve includes a disc which, when the vent valve is closed, sealingly engages the interior upper surface of the tank, and when opened, is pushed away from the interior upper surface. This design provides for a low exterior profile of the valve body, and a valve operable with relatively low air pressure.

REFERENCES:
patent: 2718239 (1955-09-01), Erbguth
patent: 2748799 (1956-06-01), Rath
patent: 3770011 (1973-11-01), Muehl
patent: 3854623 (1974-12-01), Pierson
patent: 3995871 (1976-12-01), Vornberger

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