Metering valve

Details Metering valve Metering valve

1990-02-09

1991-02-12

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

137242, 251 39, F16K 31143

Patent

active

049918192

ABSTRACT:
A metering valve is provided having a piston assembly mounted for movement between open and close modes. The piston assembly is biased to assume a close mode. The piston assembly assumes an open mode only when a predetermined external force is applied to a valve actuating element forming a component of the metering valve. When the external force is removed, the piston assembly automatically returns to the close mode. The rate of movement of the piston assembly during a first segment of travel from the open mode to the close mode is substantially slower than the rate of movement during a second segment of the travel.

REFERENCES:
patent: 2000297 (1935-05-01), Putnam
patent: 2532568 (1950-12-01), Myers
patent: 3047018 (1962-07-01), Lucien
patent: 3400731 (1968-09-01), McCornack
patent: 3842857 (1974-10-01), McCornack
patent: 4272052 (1981-06-01), McCornack
patent: 4361168 (1982-11-01), McCornack
patent: 4899778 (1990-02-01), Laube

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