Patent ID: 6189564
Filing Date: 2001-02-20
Classification: G05D,Y10T

Abstract:
An adjustable flow control valve for controlling flow of a fluid from a fluid upply, comprising:(a) a flow control component comprising:(I) a housing defining a flow control valve chamber having a first end and a second end, an inlet port opening into the first end of the flow control valve chamber for placing the fluid supply in fluid communication with the valve chamber, and an outlet port for fluid flow to exit from the second end of the flow control valve chamber;(II) a floating flow control piston slidably mounted within the flow control valve chamber between the inlet and outlet ports;(III) a passage connecting the flow control valve chamber first end and flow control valve chamber second end;(IV) a valve seat disposed within the second end of the flow control valve chamber, upstream of the outlet port; and(V) a valve member carried by the flow control floating piston; and(b) a pressure control component comprising:(I) a housing defining a pressure control valve chamber having a first end and a second end, a first inlet port opening into the first end of the pressure control valve chamber for placing the fluid supply in fluid communication with the pressure control valve chamber, a second inlet port for placing the valve chamber second end in fluid communication with the outlet port of the flow control valve chamber second end, and an outlet port for fluid flow to exit from the second end of the pressure control valve chamber;(II) a pressure control floating piston slidably mounted within the pressure control valve chamber between the first inlet port and the outlet port;(III) a valve seat disposed within the second end of the pressure control valve chamber, upstream of the outlet port; and(IV) a valve member carried by the pressure control floating piston.