A valve seat apparatus for use with fluid valves is described. An example valve seat apparatus includes a seat ring having an outer surface that includes a first annular recess and a second annular recess adjacent the first annular recess to form a stepped profile. A seal assembly is disposed within
A valve seat apparatus for use with fluid valves is described. An example valve seat apparatus includes a seat ring having an outer surface that includes a first annular recess and a second annular recess adjacent the first annular recess to form a stepped profile. A seal assembly is disposed within the first groove and a retainer is disposed in the second annular recess to retain the seal assembly in the first annular recess of the seat ring.
대표청구항▼
1. A valve trim apparatus for use with a fluid valve, comprising: a trim cage;a seat ring to be coupled to the trim cage at a first end of the seat ring, the seat ring having an outer surface that includes a first annular recess to define a seal cavity and a second annular recess adjacent the first
1. A valve trim apparatus for use with a fluid valve, comprising: a trim cage;a seat ring to be coupled to the trim cage at a first end of the seat ring, the seat ring having an outer surface that includes a first annular recess to define a seal cavity and a second annular recess adjacent the first annular recess to form a stepped profile, the second annular recess at a second end of the seat ring, the second end of the seat ring opposite the first end of the seat ring, wherein the first annular recess has a first diameter, the second annular recess has a second diameter different from the first diameter, the seat ring configured to sealingly engage a flow control member;a seal assembly disposed within the first annular recess; anda retainer to removably attach to the second annular recess of the seat ring to retain the seal assembly in the first annular recess and a surface of the retainer is to directly engage a portion of the seal assembly, the retainer including a first end and a second end, the first end of the retainer opposite the second end of the retainer, wherein the first end of the retainer is to directly contact the seal assembly and the second end of the retainer proximate the second end of the seat ring, wherein the second end of the seat ring does not engage the trim cage, the retainer removable from the second end of the seat ring to enable interchangeability of the seal assembly, wherein the seal assembly is to provide a seal between the outer surface of the seat ring and a surface of a valve body when the retainer is coupled to the seat ring and the valve seat trim apparatus is disposed in the fluid valve. 2. A valve trim apparatus as defined in claim 1, wherein the seat ring is to be threadably coupled to the trim cage at the first end. 3. A valve trim apparatus as defined in claim 2, wherein the first end of the seat ring includes a recessed portion to receive a portion of the trim cage. 4. A valve trim apparatus as defined in claim 1, wherein the retainer is threadably coupled to the seat ring. 5. A valve trim apparatus as defined in claim 1, wherein the first annular recess of the seat ring and the retainer enable the seat ring to receive an additional seal assembly, the additional seal assembly being different from the seal assembly. 6. A valve trim apparatus as defined in claim 1, wherein the seal assembly comprises a polytetrafluoroethylene seal and an anti-extrusion ring. 7. A valve trim apparatus as defined in claim 1, wherein the seal assembly is to be used with a process fluid having a temperature between about −100° F. and 600° F. 8. A valve trim apparatus as defined in claim 1, wherein the seal assembly comprises a metal seal. 9. A valve trim apparatus as defined in claim 8, wherein the seal assembly comprises a bore seal to be used with a process fluid having a temperature greater than 600° F. 10. A valve trim apparatus as defined in claim 1, wherein the seal cavity comprises a first wall and a second wall defined by the first recess and a third wall defined by at least a portion of the retainer when the retainer is coupled to the valve seat, the seal cavity defining an opening to enable the seal assembly to engage the surface of the valve body. 11. A valve, comprising: a valve body defining a fluid flow passageway between an inlet and an outlet;a valve seat to be coupled to a cage at a first end of the valve seat and disposed within the fluid flow passageway between the inlet and the outlet, the valve seat configured to sealingly engage a valve plug member to control fluid flow between the inlet and the outlet, wherein an outer peripheral surface of the valve seat includes a seal receiving area and a retainer receiving area adjacent the seal receiving area, wherein the seal receiving area has a first diameter, wherein the retainer receiving area has a second diameter different from the first diameter, and is disposed at a second end of the valve seat opposite the first end, and wherein the seal receiving area enables the valve seat to receive a first seal assembly for use with process fluids having temperatures less than 600° F. that is interchangeable with a second seal assembly for use with process fluids having temperatures greater than 600° F.; anda retainer removably coupled to the retainer receiving area to retain the first seal assembly or the second seal assembly in the seal receiving area, the retainer including a first end and a second end, the first end of the retainer opposite the second end of the retainer, wherein the first end of the retainer is to directly contact at least one of the first seal assembly or the second seal assembly and the second end of the retainer proximate to the second end of the valve seat, wherein the second end of the valve seat is not to engage the cage, the retainer to define a surface of the seal receiving area when coupled to the valve seat and engage at least a portion of the first seal assembly or the second seal assembly, the retainer to be removable from the second end of the valve seat to enable interchangeability of the first or the second seal assembly and to cause the first or second seal assembly to directly seal against a surface of a valve body when the valve seat is disposed in the valve. 12. A valve as defined in claim 11, wherein the retainer is threadably coupled to the valve seat. 13. A valve as defined in claim 11, wherein the first seal assembly includes a polytetrafluoroethylene seal for use with process fluids having temperatures between about −100° F. and 450° F. 14. A valve as defined in claim 11, wherein the first seal assembly comprises a polytetrafluoroethylene seal and an anti-extrusion ring for use with process fluids having temperatures between about 450° F. and 600 ° F. 15. A valve as defined in claim 11, wherein the second seal assembly comprises a bore seal for use with process fluids having temperatures between about 600° F. and 1100° F. 16. A valve as defined in claim 15, wherein the bore seal comprises a metal seal having a C-shaped cross-section. 17. A valve as defined in claim 11, wherein the valve seat is threadably coupled to the cage of the fluid valve. 18. A valve as defined in claim 17, wherein the cage suspends the valve seat in the valve body when the cage is coupled to the valve body. 19. A valve as defined in claim 11, wherein the retainer receiving area comprises an annular recess forming opposing walls. 20. A valve comprising: a trim cage;a seat ring to be coupled to the trim cage at a first end of the seat ring, the seat ring defining an orifice configured to sealingly engage means for controlling fluid flow through a flow path of the valve, the seat ring having an outer surface that includes a stepped profile to define first means for receiving adjacent second means for receiving, wherein the first means for receiving has a first diameter, the second means for receiving has a second diameter different from the first diameter, and the second means for receiving is disposed at a second end of the seat ring opposite the first end of the seat ring:means for sealing to be positioned in the first means for receiving; andmeans for retaining to removably attach to the second means for receiving to retain the means for sealing in the first means for receiving, the means for retaining including a first end and a second end, the first end of the means for retaining opposite the second end of the means for retaining, wherein the first end of the means for retaining is to directly contact the means for sealing and the second end of the means for retaining proximate to the second end of the seat ring, wherein the second end of the seat ring is not to engage the trim cage, wherein the stepped profile defines a first wall and a second wall of the first means for receiving and at least a portion of the means for retaining defines a third wall of the means for receiving such that the portion of the means for retaining defining the third wall is to engage a portion of the means for sealing to enable interchangeability of the means for sealing and to cause the means for sealing to directly engage a surface of a valve body when the means for retaining is coupled to the second means for receiving. 21. A valve as described in claim 20, further comprising means for coupling the seat ring defining the orifice to the trim cage.
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이 특허에 인용된 특허 (12)
LaCoste Bernard L. (Bay Saint Louis MS) Dawawala Suryakant K. (Casselberry FL) Nelson Robert M. (Winter Springs FL), Control valve.
Koester, David John; Dvorak, Sarah Lynn; Mahncke, Lynn Dean; Bell, Brandon Wayne; Bovee, Loree Lee; Witt, Gary Alan, Fluid flow control valve with bi-directional shutoff.
Koester,David John; Dvorak,Sarah Lynn; Mahncke,Lynn Dean; Bell,Brandon Wayne; Brestel,Ronald R., Fluid flow control valve with high temperature bi-directional shutoff.
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