Pressure regulating flow control apparatus

Details Pressure regulating flow control apparatus Pressure regulating flow control apparatus

1991-09-24

1992-10-20

Tapolcai, William E.

Automatic temperature and humidity regulation

Motors

Fluid-operated

137468, 236 92R, G05D 2700

Patent

active

051563320

ABSTRACT:
A pressure regulating flow control apparatus comprises a flow metering valve (10) for controllably discharging a fluid from a spring-biased throttling spool (30) thereof to a fluidic device at a regulated pressure and a pressure modulting valve (100) operatively associated with the throttling spool (30) of the flow metering valve (10) for modulating the fluid pressue in subchamber (18) of the metering valve (10) to alter the position of the throttling spool to adjust the regulated pressure in response to fluid temperature over a relatively large temperature range so as to compensate for the variation of fluid viscosity with fluid temperature.

REFERENCES:
patent: 2829492 (1958-04-01), Klanman
patent: 3047055 (1962-07-01), Kimm
patent: 3174410 (1965-03-01), Booth et al.
patent: 3474811 (1969-10-01), Blain
patent: 3538707 (1970-11-01), Karol
patent: 4336903 (1982-06-01), Zirps
patent: 4440191 (1984-03-01), Hansen

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