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ANNULAR FLEXIBLE VALVE

  • US 3,583,430 A
  • Filed: 04/25/1969
  • Issued: 06/08/1971
  • Est. Priority Date: 04/25/1969
  • Status: Expired due to Term
First Claim
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1. A valve assembly comprising a body having inlet and outlet conduits, first and second annular valve seats on said body located between said conduits and having sealing surfaces, the sealing surfaces of said valve seats converging toward each other, a flexible annular valve member disposed between said first and second seats and normally in engagement therewith, said valve member having its opposite seat engaging faces inclined with reference to a plane between said sealing surfaces, whereby fluid pressure applied on one side of the valve member will cause deflection of the extremities of the valve member toward each other to unseat the valve, and fluid pressure applied on the other side of the valve member will cause deflection of the extremities of the valve member away from each other to seat the valve.

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