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High pressure ball valve with tipping action

  • US 4,231,545 A
  • Filed: 11/28/1977
  • Issued: 11/04/1980
  • Est. Priority Date: 12/03/1976
  • Status: Expired due to Term
First Claim
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1. A ball valve comprising a body provided with a flow channel;

  • a generally ball-shaped rigid closing organ;

    sealing rings fitted into ring-shaped and transverse grooves in the valve body on both sides of said closing organ;

    a pair of spindles associated with said closing organ and provided extending from opposite sides thereof for receipt by said body and mounting said organ so that the pressure of fluid on said organ tips said organ into sealing engagement against a said sealing ring; and

    means for actuating said organ to rotate it with respect to said body to effect opening and closing of said flow channel, said means including one of said spindles extending through said body to the exterior thereof through a sealing mechanism;

    a bellows capable of withstanding pipe pressure while remaining flexible to permit tipping of said closing organ, said bellows operatively connected to said valve body and said sealing mechanism so that low-torque turning of said organ is effected by pivoting said one spindle so that a line through said spindle is transverse to said flow channel and thus said organ is moved out of tipping engagement with a said sealing ring, and subsequent rotation of said one spindle and said organ.

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