Ball valve having replaceable seals under full service pressure
First Claim
1. A ball valve having replaceable seals comprising,a housing having a longitudinal axis and having an inlet and an outlet and a seal ring sealably positioned in the housing adjacent each of the inlet and the outlet, said seal rings movable longitudinally in the housing and having a sealing surface, said housing including an openable closure flange,means extending between said seal rings and the outside of the housing for longitudinally moving said seal rings,a ball valve element positioned in the housing between the seal rings and includes a tubular member having a sealing face on each end for providing flow-therethrough when the tubular member is aligned between the seal rings,trunnions positioned on opposite sides of the tubular member perpendicular to the longitudinal axis for rotating the ball element, anda movable seat ring connected to opposite sides of the tubular member by releasable fastening means inside of the seat ring, said seat rings removable through the open closure flange.
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Accused Products
Abstract
A housing having an inlet and outlet and seal ring sealably positioned in each of the inlet and outlet and movable longitudinally. A ball valve element positioned in the housing between the seal rings and having a tubular member rotatable on trunnions. A movable seat ring is connected to opposite sides of the tubular member by fastening means inside of the seat ring and the ring is removable through an openable closure flange.
107 Citations
8 Claims
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1. A ball valve having replaceable seals comprising,
a housing having a longitudinal axis and having an inlet and an outlet and a seal ring sealably positioned in the housing adjacent each of the inlet and the outlet, said seal rings movable longitudinally in the housing and having a sealing surface, said housing including an openable closure flange, means extending between said seal rings and the outside of the housing for longitudinally moving said seal rings, a ball valve element positioned in the housing between the seal rings and includes a tubular member having a sealing face on each end for providing flow-therethrough when the tubular member is aligned between the seal rings, trunnions positioned on opposite sides of the tubular member perpendicular to the longitudinal axis for rotating the ball element, and a movable seat ring connected to opposite sides of the tubular member by releasable fastening means inside of the seat ring, said seat rings removable through the open closure flange.
Specification