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Angle ball valve

  • US 4,650,157 A
  • Filed: 09/30/1985
  • Issued: 03/17/1987
  • Est. Priority Date: 09/30/1985
  • Status: Expired due to Term
First Claim
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1. In an improved ball valve having a housing with upstream and downstream opening-defining end portions and a through passageway therebetween for cooperative aligned mounting one of its end portions on an apertured member, a resilient annular gasket adapted to be positioned between the one end portion of said housing and the apertured member, said gasket having a base portion defining an open passageway between the apertured member and the housing, a valve ball having spheroid and elliptical shaped outer wall portions and a flow-passageway therethrough, means rotatably mounting said ball for movement within the housing into and out of fluid flow-through relation between the upstream and downstream end portions of the housing, and said means also being adapted to move said elliptical shaped wall portion of said ball into non-sealing alignment with said gasket when its flow-passageway is in a flow-through relation and to move said spheroid-shaped wall portion of said ball into alignment with and into a full fluid-flow sealing-off relation with said gasket when the flow-passageway of the ball is fully closed.

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