Automatic vent valve

Details Automatic vent valve Automatic vent valve

1983-12-12

1985-09-17

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137540, 417502, F16K 1502

Patent

active

045414556

ABSTRACT:
An automatic vent valve having a stoppage member within a flow chamber located between an inlet chamber and vent chamber with said stoppage member being biased against a lower seat. The stoppage member moves between said lower seat and an upper seat in response to pressure changes associated with the operation of a positive displacement pump which either overcomes said biasing means or allows said biasing means to function. During the movement of the stoppage member between the upper and lower seats a flow path exists between the inlet chamber and vent chamber such that gases and/or fluid are vented on each stroke of the pump.

REFERENCES:
patent: 930646 (1909-08-01), Caille
patent: 1361738 (1920-12-01), McVoy
patent: 1981507 (1934-11-01), Harris
patent: 2543828 (1951-03-01), Brown

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