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Ball type valve with high pressure sealing capability

  • US 3,941,351 A
  • Filed: 12/09/1974
  • Issued: 03/02/1976
  • Est. Priority Date: 12/09/1974
  • Status: Expired due to Term
First Claim
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1. In combination with a ball type valve for use in high pressure or severe conditions, said valve having a valve handle and a spherical core cooperating with a valve seat in a body with a fluid passage there through, said core being rotatable about an axis transverse to said fluid passage and having an opening there through for alignment with said passage when in the fully open position, and said core being also rotatable a limited amount about another axis tangential to said core for forcing it against said seat, the improvement comprisingmeans for actuating said core with less than a half turn of said handle for each of said rotations,said core actuating means comprising,a short stem on said core coaxial with said transverse axis and having a diametrical groove across the free end thereof,toggle means mounted in cooperative relation with said groove,means for mounting said toggle means for coaxial rotation with said short stem,means for pivoting said toggle means about an axis parallel to said tangential axis in order to force said core against said seat, andmeans for alternatively rotating and pivoting said toggle means to close and tighten said valve.

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