Automatic separator valve

Details Automatic separator valve Automatic separator valve

1991-09-16

1992-11-10

Cohan, Alan

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137192, 137423, F16K 3128

Patent

active

051615649

ABSTRACT:
An automatically resetting mechanical valve used to control unwanted discharge of liquids less dense than water, principally oil, which may be present in waste water flows. The valve is closed by sinking both a primary float and a secondary float, each less dense than water but more dense than the liquid whose discharge is to be stopped. The sinking primary float effectively closes an orifice in an outlet conduit upon the sinking primary float's becoming sufficiently immersed in the less dense liquid. Upon the reintroduction of water, the secondary float acts upon a lever of high mechanical advantage, which pries the primary float upward, which, in turn, allows hydraulic pressure inside and outside the conduit to equalize, thereby allowing the primary float to unseat and the valve to automatically re-open.

REFERENCES:
patent: 646832 (1900-04-01), Houghton
patent: 1201558 (1916-10-01), Cobb
patent: 1995742 (1935-03-01), Linnmann
patent: 4132238 (1979-01-01), Clark
patent: 4993086 (1991-02-01), Palma

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