High resolution micro-metering valve

Details High resolution micro-metering valve High resolution micro-metering valve

1975-01-06

1976-10-12

Rosenthal, Arnold

Valves and valve actuation

Lost motion between actuator and valve

251122, 251205, 251322, F16K 4704

Patent

active

039853314

ABSTRACT:
A high resolution micro-metering valve having a non-rotary needle valve supported between a pair of calibrated coil springs of widely different spring rates. The lower rate spring is axially adjustable in minute increments by the valve actuator to vary the loading on the higher rate spring in an amount proportional to the ratio of the two spring rates. The valve actuator is free of all backlash and all relative movement with the valve packing is restricted to non-rotary axial movement. The valve proper can be contoured at will to provide linear or non-linear flow characteristics without need for any change in either of the two coil springs.

REFERENCES:
patent: 572580 (1896-12-01), Spitzenberg
patent: 830210 (1906-09-01), Cookson
patent: 1064409 (1913-06-01), Wheary
patent: 1494910 (1929-05-01), Hench
patent: 2386051 (1945-10-01), Kempton
patent: 2598224 (1952-05-01), Clonts
patent: 2897833 (1959-08-01), Seeler
patent: 3642026 (1972-02-01), Sielaff
patent: 3733048 (1973-05-01), Hiszpanski

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