×

DOUBLE DISC SEAL VALVE

  • US 3,842,861 A
  • Filed: 09/27/1973
  • Issued: 10/22/1974
  • Est. Priority Date: 09/27/1973
  • Status: Expired due to Term
First Claim
Patent Images

1. A valve comprising, a body having a flow passage extending therethrough, a pair of disc valves arranged for movement to close and open the flow passage, said disc valves being spaced apart from one another in the direction of flow in the flow passage thereby providing an intermediate pressure chamber between the discs when the discs are in closed position, means for opening and closing the disc valves, pressure-sealing means to seal the disc valves relative to the flow passage when the discs are in closed position, and means for providing pressure to the pressure-sealing means and to the intermediate pressure chamber.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×