Fluid control valve

Details Fluid control valve Fluid control valve

1986-06-20

1987-11-17

Rosenthal, Arnold

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

25112904, 25112905, 455603, F16K 3102

Patent

active

047067039

ABSTRACT:
A linear solenoid-type flow control valve with a valve element position feedback loop. An input consisting of an analog command signal is supplied in the form of a serial digital signal from a modulating transmitter through an optical fiber transmission line. An actuator operating driving circuit, a receiving demodulator for reconverting the light signal from the transmission line to the serial digital signal and further to the analog command signal and supplying it to the driving circuit, a differential transformer for detecting an operated position of a control valve element and a feedback circuit from the differential transformer are integrally mounted on the coupling component of the control valve element and its actuator and in this way the component parts at the receiving side are arranged as close as possible with respect to one another.

REFERENCES:
patent: 2948295 (1960-08-01), Smith, Jr.
patent: 3307824 (1967-03-01), Weisheit
patent: 4306314 (1981-12-01), Griffiths
patent: 4386626 (1983-06-01), Hehl

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