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US 4,041,982 AGranted
Double wall plug control valve
AssigneeKieley & Mueller, Inc.
InventorHenry Paul Lindner
Life of this patent
Estimating the term…
Abstract
The control valve is provided with a double walled cage and a valve plug slidably mounted between the perforated walls of the cage. The control valve serves to reduce gas-generated noise when used for gas service and to control both cavitation and noise when used in liquid service.
Claims10
A control valve comprising
- a body defining a flow path for a fluid flow, said body including an inlet, an outlet and a valve bridge between said inlet and outlet defining a constricted opening within said path;
- a double wall cage mounted within said body coaxially of said valve bridge opening, said cage including a pair of perforated walls disposed in spaced apart concentric relation for passage of a fluid flow therethrough;
- and
- a valve plug reciprocally mounted in said body and located in slidable relation between said walls to control the fluid flow through said flow path from said inlet to said outlet.
1 more element
A control valve comprising
- a body defining a flow path for a fluid flow, said body including a valve bridge defining a constricted opening within said path;
- a cage mounted within said housing coaxially of said valve bridge opening, said cage including an annular plate mounted on said valve bridge within said opening in sealed relation, a first perforated cylinder secured to said plate and a second perforated cylinder mounted on said plate in sealed relation thereto and in spaced concentric relation to said first cylinder;
- and
- a valve plug movably mounted in said housing and located in slidable relation between said cylinders, said plug being movable between a first position in which said plug sealingly engages said annular plate to close the perforations in said cylinders to a flow of fluid and a second position in which said plug is spaced from said annular plate to open the perforations in said cylinders to a flow of fluid.
1 more element
A control valve comprising
- a housing defining a flow path for a fluid flow, said housing including an inlet, an outlet and a valve bridge between said inlet and outlet defining a constricted opening with said path;
- a cage mounted within said housing on said valve bridge, said cage including at least one pair of perforated concentric spaced apart walls coaxially of said valve bridge opening;
- and
- a valve plug movably mounted in said housing and located in slidable relation at least between said walls to selectively open and close the perforations in said walls to control a flow of fluid through said flow path from said inlet to said outlet.
1 more element
A control valve comprising
- a body defining a flow path for a fluid flow, said body including a valve bridge defining a constricted opening within said path;
- a double wall cage mounted within said body coaxially of said valve bridge opening, said cage including a pair of perforated walls disposed in spaced apart concentric relation for passage of a fluid flow therethough and a pair of annular surfaces;
- and
- a valve plug reciprocally mounted in said body and located in slidable relation between said walls, said valve plug including an annular recess in a terminal surface located between said walls and a pair of annular surfaces about said recess to mate with said surfaces of said cage to form valve seats when the valve is closed.
1 more element
Dependencies are inferred from the claim text.