Flow modulating control valve assembly

Details Flow modulating control valve assembly Flow modulating control valve assembly

1988-05-02

1989-09-05

Hepperle, Stephen

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

Mixing valve with temperature motive means

137 88, 236 1215, 251 3003, G05D 2313, F16K 3140

Patent

active

048630985

ABSTRACT:
A pilot operated flow modulating control valve assembly with a pilot valve to initiate opening and closing of a main control valve, and a secondary valve for separately controlling pressure across the control valve to achieve its modulated positions.

REFERENCES:
patent: 1368251 (1921-02-01), Ehrhart
patent: 3415269 (1968-12-01), Salerno
patent: 3423062 (1969-01-01), Grayson
patent: 3642199 (1972-02-01), Halkema
patent: 3684238 (1972-08-01), Michellone et al.

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