Fluid control valve

Details Fluid control valve Fluid control valve

1983-06-17

1984-09-25

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137529, 417282, 417295, F16K 1518

Patent

active

044730934

ABSTRACT:
The valve, in the exemplary embodiment shown, comprises a gas inlet or intake valve for use with a gas compressor. It has a valve body with a gas inlet opening and a gas discharge opening, the latter for communication with the gas inlet of a compressor. A pair of concentrically-engaged pistons, relatively movable therebetween, cooperate to open, close, and throttle communication between the valve inlet and discharge openings. A first, compression spring, reactive from the valve body, urges the piston pair in a first closure disposition, to prevent gas flow through the valve body, and a second, compression spring, reactive from one of the pistons of the pair thereof, urges the other piston to a second, open disposition, to accommodate gas flow through the valve body.

REFERENCES:
patent: 3289686 (1966-12-01), Tyer
patent: 3602610 (1971-08-01), Bloom
patent: 4064906 (1977-12-01), Berg
patent: 4362475 (1982-12-01), Seitz

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