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Gate assembly for a double disk gate valve

  • US 5,971,358 A
  • Filed: 06/11/1998
  • Issued: 10/26/1999
  • Est. Priority Date: 06/11/1998
  • Status: Expired due to Term
First Claim
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1. A double disk gate assembly for a gate valve of the kind having a valve seat, in which the valve is actuated by an actuating mechanism linearly moving the gate assembly from a first open position to a second closed position in contact with the valve seat, the gate assembly comprising:

  • a) first and second closure disks, located parallel to and coaxial with each other, and spaced apart to thereby form a gap defined by and substantially coextensive with each adjacent surface of each closure disk;

    b) a resilient material substantially filling the gap between the first and second closure disks;

    c) a cross-member located across substantially all of the upper surface of the resilient material, between the closure disks, the cross-member being connectable to the actuating mechanism; and

    d) an outer coating encasing the first and second closure disks, cross member, and resilient material, and wherein said outer coating comprises an elastomer having a durometer greater than the durometer of the resilient material,such that when the gate assembly is moved from the first open position to the second closed position, the cross-member compresses the resilient material, causing the resilient material to press on the first and second closure disks.

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