Vent valve

Fluid handling – Destructible or deformable element controlled – Destructible element

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Details

137 73, 1374932, 137846, 220201, 220203, F16K 17196, F16K 1738

Patent

active

044587112

ABSTRACT:
A plastic vent valve apparatus for use in connection with storage containers provides for equalization of the internal pressure of the container. Air is admitted into the container in response to a partial vacuum, while fumes or fluid contents of the container are expelled in response to over-pressurization of the container to prevent explosion of the container. Moderate over-pressurization resulting from normal expansion of the contents is relieved by venting of the fumes or liquid contents by means of a valve mechanism. Severe over-pressurization requiring rapid venting is better accommodated by ejection of a thin-walled break-away portion of the upper housing defining a large unobstructed vent aperture. Finally, under severe fire conditions the melting of the plastic valve components may provide a yet larger aperture for maximum venting.

REFERENCES:
patent: 1140713 (1915-05-01), Price
patent: 1310240 (1919-07-01), Kessler
patent: 1740420 (1929-12-01), Friedman
patent: 2271786 (1942-02-01), Watkins
patent: 2431457 (1947-11-01), Bondurant
patent: 3463346 (1969-08-01), Mitchell
patent: 3603343 (1971-09-01), Keller
patent: 3971406 (1976-07-01), Inada
patent: 3976096 (1976-08-01), Kass
patent: 4016904 (1977-04-01), Gordon

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