Control valve with low noise and enhanced flow characteristics

Details Control valve with low noise and enhanced flow characteristics Control valve with low noise and enhanced flow characteristics

2005-12-13

2005-12-13

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C251S362000

Reexamination Certificate

active

06973941

ABSTRACT:
A control valve that reduces noise and controls flow includes a slotted cylindrical skirt and/or a tapered metal ring. The metal ring has a tapered external surface for engaging a matching tapered bore within a valve housing. One embodiment is directed to a control valve including a housing defining a central orifice in fluid in communication with an inlet port and an outlet port, and a movable valve plug assembly having a skirt portion slidably engaged within the central orifice to control fluid flowing through the housing. The skirt portion defines a plurality of openings, which can be slots, to gradually control the flow of fluid through the housing while reducing cavitation. A method of controlling fluid flow in a process includes receiving fluids via an inlet port of a control valve, and controlling the flow of the fluid via a movable skirted valve plug with a plurality of tapered slots.

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Drawing of known Balance Cage-Guided Control Valve.
International Search Report for PCT/US03/34995, issued Mar. 9, 2004.
International Search Report for PCT/US03/34995, issued Jun. 4, 2004.

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