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Slurry gate valve

  • US 4,429,710 A
  • Filed: 10/06/1982
  • Issued: 02/07/1984
  • Est. Priority Date: 02/17/1981
  • Status: Expired due to Fees
First Claim
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1. A slurry gate valve comprising in combination:

  • a cylindrical conduit portion;

    a first end of said conduit portion;

    a second end of said conduit portion, said first and said second ends being in opposed relationship to each other;

    a first annular bolt flange disposed adjacent said first end of said conduit portion;

    a second annular bolt flange disposed adjacent said second end of said conduit portion;

    a first face of said first bolt flange;

    a first face of said second bolt flange;

    a plurality of bolt holes defined by said first faces of said first and said second bolt flanges;

    a first sleeve liner extending from said first face of said first bolt flange inwardly relative to said conduit portion;

    a second sleeve liner extending from said first face of said second bolt flange inwardly relative to said conduit portion;

    a first inward face of said first sleeve liner;

    a first inward face of said second sleeve liner;

    an annular slot defined by said first inward faces of said first and said second sleeve liners;

    an annular channel defined by said first inward face of said first sleeve liner;

    an annular channel defined by said first inward face of said second sleeve liner;

    an annular wiping seal disposed within each of said annular channels;

    a gate housing portion secured adjacent said conduit portion;

    a gate slidably disposed within said gate housing, said gate including a first and a second surface, said annular wiping seal of said first sleeve liner cooperating with said first surface of said gate, said annular wiping seal of said second sleeve liner cooperating with said second surface of said gate in wiping relationship thereto;

    a circular slot defined by said conduit portion, said circular slot being enclosed by said gate housing and in planar alignment with said gate and said annular slot; and

    an undercut key portion disposed adjacent each of said annular channels.

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