Overflow vent valve

Details Overflow vent valve Overflow vent valve

1985-03-22

1987-02-03

Cohan, Alan

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

1376142, 13761421, F16K 2404

Patent

active

046403043

ABSTRACT:
An overflow vent valve comprising a housing adapted to be installed wherein it is desirable to release excessive gas pressure from a flow system while precluding the discharge of liquid therefrom, a normally closed pressure responsive check valve disposed within the housing, a ported cage secured to the check valve and suspended within the interior of the housing for communication fluid pressure from the housing to the check valve, and a lightweight ball loosely disposed within the interior of the ported cage for floating on the surface of any liquid present within the interior of the cage, the ball adapted to engage a second valve seat provided on the check valve in the event the level of the liquid rises sufficiently within the cage, the engagement of the lightweight valve with the second valve seat precluding the discharge of liquid from the overflow vent valve assembly.

REFERENCES:
patent: 2111473 (1938-03-01), Hudson
patent: 3401751 (1968-09-01), Loftin
patent: 4457325 (1984-07-01), Green

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