Ventilation valve

Details Ventilation valve Ventilation valve

1979-07-20

1984-03-13

Schwadron, Martin P.

Fluid handling

With leakage or drip collecting

Collector for waste liquid derived from solid, gas or vapor

137526, F16K 1500

Patent

active

044361076

ABSTRACT:
In a ventilating valve adapted to be connected to a pipe in which, when the pressure in said pipe is below the ambient pressure, said pressure is equalized by causing ambient air to enter said pipe, said valve comprising an annular valve means, the pressure in a valve chamber communicating with the pipe acting on one side of said valve means while ambient pressure acts on the other side thereof through an inlet opening to the valve chamber, said inlet opening being defined by stays which extend between two seats co-operating with the valve means, there is arranged around the inner wall of the housing of said chamber a liquid collecting groove which is connected by means of one or more channels with the interior of a tubular connecting means for the pipe, and each such channel is arranged in a stay.

REFERENCES:
patent: 2018130 (1935-10-01), Jauch
patent: 3923081 (1975-12-01), Persson

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