Valve seat apparatus for use with fluid valves
AssigneeFisher Controls International LLC
InventorsAaron Andrew Perrault, Rochelle Marie Blackford, David James Westwater, Ronald W. Kaufmann
Life of this patent
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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.
Claims20
A valve seat apparatus for use with fluid valves, comprising:
- a 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, wherein an end of the closure member is not driven into abutting engagement with another seating surface when the valve is in the closed position.
A fluid valve, comprising:
- a valve body defining a fluid flow passageway between an inlet and an outlet and having at least one stepped surface adjacent an orifice of the fluid valve;
- a cage having a first opening to slidably receive at least a portion of a closure member of the fluid valve and a second opening to control the flow characteristics of fluid through the fluid valve;
- and
- a valve seat disposed between an end of the cage and a stepped portion of the valve body adjacent the orifice, wherein an outer seating surface of the closure member is to slidably engage the valve seat when the closure member is in the closed position to prevent fluid flow between the inlet and the outlet of the valve, and wherein the closure member is not driven into engagement with another seating surface when the valve is in the closed position.
A valve seat apparatus for use with fluid valves, comprising:
- means for sealing an orifice of a valve, wherein the means for sealing is captured between an end of a guide structure and a stepped surface of a valve body, and wherein an outer surface of a closure member is to slidably engage the means for sealing to prevent fluid flow through the orifice of the valve when the valve is in a closed position, and wherein the closure member is not driven into abutting engagement with another seating surface when the valve is in a closed position.
Dependencies are inferred from the claim text.