Pressure regulating valve

Details Pressure regulating valve Pressure regulating valve

1975-03-18

1976-06-01

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

G05D 1600

Patent

active

039601706

ABSTRACT:
A main valve has a housing, a valve member slidable in the housing and defining at its opposite ends two pressure chambers, a high-pressure port and a low-pressure port of which one communicates with one of the chambers, a throttle connecting the chambers and a spring acting in the other chamber upon one end of the valve member and urging the same from a blocking position towards a rest position. A control valve has a fluid line which communicates with the other of the chambers for selecting a main-valve response pressure. A first set of passages connects the ports with one another via the one chamber when the valve member approaches the rest position thereof, and a second set of passages connects the chambers with one another when the valve member approaches its blocking position.

REFERENCES:
patent: 2654975 (1953-10-01), Adams et al.
patent: 2923306 (1960-02-01), Mitchell
patent: 3402734 (1968-09-01), Robbins, Jr.
patent: 3411531 (1968-11-01), Clark et al.
patent: 3613716 (1971-10-01), Hoheisel
patent: 3703911 (1972-11-01), Horikiri

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