Self-contained vent valve unit and system utilizing the same

Details Self-contained vent valve unit and system utilizing the same Self-contained vent valve unit and system utilizing the same

1976-07-21

1978-01-17

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

1374932, 1375122, 1375123, 1375195, F16K 1704

Patent

active

040686809

ABSTRACT:
A self-contained vent valve unit for a liquid system wherein liquid is to substantially fill a cavity and thereafter be pressurized in the cavity, the valve unit having a first valve arrangement adapted to be disposed in fluid communication with the cavity for venting air from the cavity during low pressure filling of the cavity with the liquid. The first valve arrangement is adapted to automatically close upon the pressurization of the liquid in the cavity to a first certain value thereof. The valve unit has a second valve arrangement also adapted to be disposed in fluid communication with the cavity for venting the liquid from the cavity when the pressure of the liquid reaches a second certain value thereof.

REFERENCES:
patent: 112611 (1871-03-01), Marsh
patent: 120519 (1871-10-01), Hibberd
patent: 2634947 (1953-04-01), Gardner
patent: 2677939 (1954-05-01), Clute
patent: 2960996 (1960-11-01), Haselton
patent: 3152606 (1964-10-01), Vedder

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