Self-modulating control valve for high-pressure fluid flow
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United States of America Patent
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Sep 17, 1991
Grant Date -
N/A
app pub date -
Jul 18, 1990
filing date -
Jul 18, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A self-modulating control valve for high pressure fluids, particularly gas in three interacting pressure chambers are provided in association with the main disc which includes two piston portions of different diameters, one of which operates as a spool valve to meter fluid flow through valving ports to a pressure stabilizing chamber formed in the main disc and also to the outlet side of the valve. Fluid flow to the pressure chamber which includes the large piston portion is through a metering orifice which drops the pressure in combination with unseating the valve, allowing the pressure in the chamber which includes the smaller of the piston portions to contribute the unseating forces for the main disc.
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