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Gate valve

  • US 5,461,778 A
  • Filed: 12/28/1994
  • Issued: 10/31/1995
  • Est. Priority Date: 02/15/1994
  • Status: Expired due to Fees
First Claim
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1. A method of forming a gate for a gate valve, the method comprising the steps of:

  • providing a plate having a first side and a second side;

    forming an opening through the plate between the first and second sides thereof such that the plate is characterized as having a closure area and a flow opening;

    forming a first recess in the plate wherein the first recess circumscribes the flow opening and the closure area on the first side of the gateforming a second recess in the plate wherein the second recess circumscribes the flow opening and the closure area on the second side of the gate;

    fixing an alloy into each of the recesses.

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