Atmospheric compensating automatic air release valve

Details Atmospheric compensating automatic air release valve Atmospheric compensating automatic air release valve

1989-07-24

1992-02-25

Cohan, Alan

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137450, F16K 3126

Patent

active

050904396

ABSTRACT:
An automatic air release valve which is viable to operate at any pressure. The air release valve includes a first orifice for exhausting air and a second orifice which is exposed to atmosphere but is always sealed. The second orifice exposes a vertically movable stem within the valve to forces which are equal and opposite to a suction force which tends to hold the valve stem in sealing relation to the first, air exhaust orifice. Because of the equalization of pressures made possible by the provision of first and second orifices, movement of the valving mechanism within the valve housing downwardly as the liquid level goes down causes the air vent orifice to open irrespective of the pressure within the valve.

REFERENCES:
patent: 462798 (1891-11-01), Hussey
patent: 1856105 (1932-05-01), Marden
patent: 2425070 (1947-08-01), Nicolette
patent: 2673618 (1954-03-01), Batchelder
patent: 2745511 (1956-05-01), Berck
patent: 2811219 (1957-10-01), Wenzl
patent: 2938531 (1960-05-01), Berck
patent: 3054419 (1962-09-01), Farrell
patent: 3232313 (1966-02-01), Bering
patent: 4011884 (1977-03-01), Drori
patent: 4164955 (1979-08-01), Allen

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