Stop valve

Details Stop valve Stop valve

1979-10-24

1981-10-06

Schwadron, Martin P.

Fluid handling

Liquid level responsive or maintaining systems

With control fluid connection at desired liquid level

73290R, 141198, F15C 114, F16K 2118

Patent

active

042929962

ABSTRACT:
A fully automatically operable pneumatic stop valve is provided which rests on the principle of pressure differences in its various membrane spaces in controlling the fluid flow through the valve, wherein the rising fluid closes a fluid level control pipe and thereby upsets the pressure conditions in an auxiliary valve membrane space which in turn controls the pressure in the main membrane space controlling the closing of the main valve.

REFERENCES:
patent: 961577 (1910-06-01), Bergmark
patent: 2626006 (1953-01-01), Anderson
patent: 2967542 (1961-01-01), Einer
patent: 3020924 (1962-02-01), Davies
patent: 3242940 (1966-03-01), Sirotek
patent: 3363641 (1968-01-01), Mylander
patent: 3561465 (1971-02-01), de Graaf
patent: 4024887 (1977-05-01), McGregor
patent: 4161188 (1979-07-01), Jorgensen
patent: 4191208 (1980-03-01), Mylander

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