Liquid seal valve

Details Liquid seal valve Liquid seal valve

1981-02-27

1983-10-25

Weakley, Harold W.

Fluid handling

With liquid valves or liquid trap seals

Liquid valves

137252, 137254, F16K 900

Patent

active

044112866

ABSTRACT:
A liquid seal valve, intended in particlar to form part of an inert gas system for supplying inert gas to a storage tank in which liquid fuel may be stored, comprises a first vessel having a gas outlet therefrom, and a gas inlet pipe extending downwardly into a second vessel containing a liquid trap, the lower end of the gas inlet pipe being disposed below the level of the surface of the liquid trap when there is no gas flow through the gas inlet pipe. The second vessel communicates, in a region above the level of the surface of the liquid trap, with the first vessel, whereby gas entering the valve via the gas inlet pipe can flow via the second vessel to the gas outlet in the first vessel. Pipe means provides communication between the lower end of the gas inlet pipe and at least two regions in the first vessel, of which at least one is below and at least one is above the level of the surface of the liquid trap when no gas flows through the gas inlet pipe.

REFERENCES:
patent: 1651051 (1927-11-01), Wiggins
patent: 3187765 (1965-06-01), Frank
patent: 3237637 (1966-03-01), Ainsworth
patent: 3741235 (1973-06-01), Ambrose
patent: 3802165 (1974-04-01), Wesplats

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