Method of assembling valves

  • US 4,047,275 A
  • Filed: 09/17/1975
  • Issued: 09/13/1977
  • Est. Priority Date: 09/17/1975
  • Status: Expired due to Term
First Claim
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1. A method of assembling a plastic ball valve having a unipartite housing comprising the steps of:

  • a. inserting a valve stem through a main body portion of the valve;

    b. positioning a valve member in said main body portion in engagement with and rotatably by said stem;

    c. mounting a valve seat and seat retainer in an end body portion of the valve;

    d. heating by bringing a heater into intimate contact with area of said plastic ball valve at or near the inner end of said end body portion and one end of said main body portion; and

    e. pressing said end of said body portions together for fusing.

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