Bushing-less control valve

  • US 6,866,244 B2
  • Filed: 02/07/2003
  • Issued: 03/15/2005
  • Est. Priority Date: 02/07/2003
  • Status: Active Grant
First Claim
Patent Images

1. A fluid control valve comprising:

  • a valve body having a fluid inlet, a fluid outlet, a passageway communicating therebetween, and a valve seat in said passageway for controlling the fluid flow;

    a valve bonnet mounted to the valve body and having a central bore;

    an elongated valve operating member extending through said valve bonnet central bore with a plug end for sealingly engaging said valve seat, including a lower clearance bore between said valve bonnet and said elongated valve operating member so there is no engagement therebetween;

    a single packing set in said valve bonnet central bore surrounding said elongated valve operating member;

    said single packing set providing a guidance fit engagement between the valve bonnet and the valve operating member, without the need for a bushing between the valve bonnet and the valve operating member.

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