Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1990-07-18
1991-09-17
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
251 36, 251 44, F16K 31383, F16K 3102
Patent
active
050487906
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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Lee Kevin L.
Schwadron Martin P.
Target Rock Corporation
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