Patent ID: 8998172
Filing Date: 2015-04-07
Classification: F16K,Y10T

Abstract:
1. 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.