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US 8,998,172 B2Granted
Ball valve seat seal
AssigneeSPX Corporation
InventorsMark Lewandowski, Glenn McClatchey, Phillip Treichel
Life of this patent
Estimating the term…
Abstract
In an embodiment of the present invention, a valve seal for a ball valve includes a ball configured to mate with a tail piece, an annular seat ring to facilitate the mating of the ball with the tail piece, the seat ring having an angled wall having a first groove for accommodating a first seal and a second groove for accommodating a second seal, the first seal having a different Young's modulus from the second seal.
Claims15
A valve seal for a ball valve, comprising:
- a ball configured to mate with a tail piece;
- an annular single piece seat ring having an interior portion and an exterior portion to facilitate the mating of the ball with the tail piece,
- a single seal component group comprising a first seal and a second seal, the first seal being an annular band and being frusto-conical in geometry and the first seal having a cross-sectional shape that is a parallelogram,
- the seat ring having an angled wall having a first groove for accommodating the first seal and a second groove for accommodating the second seal, the first seal having a different Young's modulus from the second seal, wherein said first seal and said second seal are each retained in said respective first and second grooves by press fit;
- the second groove having a plurality of indentations configured to grip the second seal and the second seal being initially circular in cross-section and configured to conform to and be gripped by the plurality of indentations;
- and
- a hole formed on said seat ring wherein said hole allows for the flow of lubricant there through around said ball.
4 more elements
A valve seal for a ball valve, comprising:
- a ball;
- an annular single piece seat ring having an interior portion and an exterior portion and a first groove and a second groove, configured to contact the ball, wherein the first groove has a first groove wall angled at an angle θ1 of less than 90° relative to a longitudinal axis disposed at a radial center of the seat;
- a single seal component group comprising a first seal that is conical in geometry and a second seal, wherein said first seal and said second seal are each retained in said respective first and second grooves by press fit;
- the first seal comprising a frusto-conical annular band having a cross-sectional shape that is a parallelogram, wherein a first interior wall of the band is disposed at an angle θ2 of less than 90° relative to a longitudinal axis disposed at a radial center of the band;
- the second groove having a plurality of indentations configured to grip the second seal and the second seal being initially circular in cross-section and configured to conform to and be gripped by the plurality of indentations;
- and
- a hole formed on said seat ring wherein said hole allows for the flow of lubricant there through around said ball.
4 more elements
Dependencies are inferred from the claim text.