Compensating valve for control of fluid flow

专利名称：Compensating valve for control of fluid flow发明人：Dannie B. Hudson申请号：US08/447769申请日：19950523公开号：US05511582A公开日：19960430

摘要：A hydraulically operated adjustable valve for controlling fluid flow through anorifice directly responsive to changes in pressure monitored either upstream ordownstream of the valve, suitable for use in high pressure regimes, where said valve iscontrolled by a piston having a main body, a shoulder and an extension, where hydraulicfluid within a hydraulic bore acts upon said extension to extend said piston, and where abiasing spring acts on the main body in combination with pressurized air within a lower airchamber air acting upon said shoulder to retract said piston. An apertured valve barrierallows the valve to compensate for pressure changes in a high pressure regime upstreamof the valve.

申请人：ENRJ LTD.

代理人：Thomas C. Saitta

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