Proportional flow control valve

Details Proportional flow control valve Proportional flow control valve

1991-05-23

1992-08-18

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Having means to produce proportional flow

25112919, 251333, F16K 3106

Patent

active

051392275

ABSTRACT:
A proportional flow control valve in which a valve seat is provided in the proportional flow control valve body, a valve piece is slidably mounted on a movable iron core, and is urged toward the valve seat by an elastic member disposed between the valve piece and the movable iron core, and a holder is fixedly mounted on the movable iron core so as to limit the movement of the valve piece toward the valve seat caused by the elastic member. The proportional flow control valve is high in reliability in which the leakage of fluid is substantially zeroed even when fully closed, and the difficulties are eliminated that, when its flow rate adjusting means engages with or disengages from the valve seat, hammering sounds are produced and the flow characteristic is adversely affected, and which is simple in adjustment and is maintained correct in flow characteristic at all times.

REFERENCES:
patent: 4813647 (1989-03-01), Yagi et al.

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