Metering valves

Details Metering valves Metering valves

1978-11-06

1979-12-25

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

With adjustable limit stop for actuator

251 635, 251331, 251335A, 251205, F16K 31122, F16K 152

Patent

active

041802390

ABSTRACT:
A metering valve having a valving element with a valving surface; a valve head with a valve seat, an inlet passage upstream of the valving surface and an outlet passage downstream of the valving surface; a valve body which provides a predetermined small movement of the valving surface into and out of contact with the valve seat to dispense fluid, and biases the valving surface against the valve seat when fluid is not being dispensed; and a seal between the valving element and the valve head, the seal defining a dispensed fluid cavity around the valving surface and valve seat communicating with the inlet and outlet passages, and including a diaphragm in the preferred embodiment.

REFERENCES:
patent: 402896 (1889-05-01), Braggins
patent: 1053315 (1913-02-01), O'Dowd
patent: 1939150 (1933-12-01), Terry
patent: 2506837 (1950-05-01), Kochner
patent: 2675204 (1954-04-01), Johnson
patent: 3391897 (1968-07-01), Wilson
patent: 3512550 (1970-05-01), Ammann
patent: 3844307 (1974-10-01), Soury et al.

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