Valve seat apparatus for use with fluid valves

Details Valve seat apparatus for use with fluid valves Valve seat apparatus for use with fluid valves

2009-05-26

2011-11-29

Fristoe, Jr., John (Department: 3753)

Valves and valve actuation

Reciprocating valve

Particular head and seat cooperation

C251S333000, C251S359000, C137S625280, C137S625380

Reexamination Certificate

active

08066258

ABSTRACT:
A valve seat apparatus for use with fluid valves is described. An example valve seat apparatus includes a flexible seal disposed between a cage and a valve body such that an outer seating surface of a closure member slidably coupled to the cage slidingly engages the flexible seal to prevent fluid flow through the valve body when the valve is in a closed position and an end of the closure member is not driven into abutting engagement with another seating surface when the valve is in the closed position.

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International Searching Authority, “International Search Report,” issued in connection with international application serial No. PCT/US2010/031449, mailed Aug. 5, 2010, 5 pages.
International Searching Authority, “Written Opinion of the International Searching Authority,” issued in connection with international application serial No. PCT/US2010/031449, mailed Aug. 5, 2010, 6 pages.

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