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US 2009/0020720 A1Published application
Methods and apparatus to align a seat ring in a valve
AssigneeFisher Controls International LLC
InventorsLonnie Oscar Davies, JR., David J. Westwater
Life of this patent
Estimating the term…
Abstract
Methods and apparatus to align a seat ring in a valve are described. An example fluid valve includes a valve body having a curved internal surface to receive a seat ring and a seat ring having a sealing surface to receive a movable control member and a curved surface opposite the sealing surface to engage the curved internal surface of the valve body.
Claims22
A fluid valve, comprising:
- a valve body having a curved internal surface to receive a seat ring;
- and
- a seat ring having a sealing surface to receive a movable control member and a curved surface opposite the sealing surface to engage the curved internal surface of the valve body.
A seat ring for use in a fluid valve, comprising:
- an aperture to receive a movable control member;
- and
- an outer surface having a curved portion extending away from the aperture toward an outer edge of the seat ring to engage a valve body having a complementary curved portion, wherein the curved portion of the outer surface of the seat ring is configured to align the aperture and the movable control member.
A method of assembling a fluid valve comprising:
- inserting a seat ring having an outer surface including a curved portion into a valve body;
- positioning a guide on the seat ring;
- and
- driving the guide against the seat ring to cause the curved portion of the seat ring to move against the valve body to align the seat ring and the guide.
1 more element
Dependencies are inferred from the claim text.