Control valve having “C” seal

Details Control valve having “C” seal Control valve having “C” seal

2004-09-07

2008-05-20

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S625390, C277S647000

Reexamination Certificate

active

07373951

ABSTRACT:
A control valve having a shiftable valve plug includes a valve body having an inlet, an outlet, a flow passage extending between the inlet and the outlet, and defining a longitudinal axis, a generally cylindrical valve cage disposed within the valve body and sized to receive the valve plug, with the valve cage including at least one aperture comprising at least a portion of the flow passage, a portion of the valve cage disposed adjacent a portion of the valve body at an interface. A seal having a C-shaped cross section is provided and is disposed at the interface between the valve cage and the valve body, and a retainer is disposed adjacent the interface and positioned to secure the seal against movement along the longitudinal axis.

REFERENCES:
patent: 4108210 (1978-08-01), Luthe et al.
patent: 4669702 (1987-06-01), Tripp
patent: 6302402 (2001-10-01), Rynders et al.
patent: 6325101 (2001-12-01), Stoll et al.
patent: 6997211 (2006-02-01), Alman et al.
patent: 0573999 (1993-12-01), None
International Search Report received in International (PCT) Application PCT/US2005/028712, issued Dec. 8, 2005.
Written Opinion for Application PCT/US2005/028712, issued Dec. 8, 2005.

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