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Live load packing system

  • US 5,129,625 A
  • Filed: 10/09/1990
  • Issued: 07/14/1992
  • Est. Priority Date: 10/09/1990
  • Status: Expired due to Term
First Claim
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1. In a fluid valve having an elongated operating valve member, packing mounted around said elongated operating valve member for sealing said operating valve member, and loading means for loading and urging said packing sealingly against said operating valve member to inhibit fluid leakage around said operating valve member, the improvement comprising:

  • side load prevention means mounted between said packing and said loading means for enabling uniform concentric loading of said loading means on said packing sealingly around and against said elongated operating valve member and preventing side loading of said loading means on said packing tending to move said packing away from said elongated operating valve member;

    said side load prevention means including sleeve means in slidable mounting contact with said elongated operating valve member including a guide sleeve and a non-metallic inner liner mounted within said guide sleeve for slidable engagement with said elongated operating valve member to absorb any of said side loading;

    said loading means including spring means mounted on said guide sleeve for maintaining a uniform concentric spring load on said packing;

    adjustment means for adjusting the amount of loading on said packing by slidably adjusting the position of said guide sleeve and inner liner on said operating valve member, said adjustment means including,a packing flange surrounding said guide sleeve and inner liner and engageably contacting said loading means, anda plurality of packing studs and nuts mounting said packing flange to said valve so that adjusting said packing nuts urges said packing flange against said loading means to adjust said packing loading and wherein said guide sleeve and inner liner are not exposed exteriorly beyond said packing flange; and

    visual indicating means for indicating the adjusted position of said guide sleeve and inner liner so that it may be noted when an optimum amount of loading is reached during said packing load adjustment, said visual indicating means including a central opening in said packing flange sufficient to enable the position of said guide sleeve and inner liner to be viewed during said packing load adjustment and to enable one to determine that said optimum amount of loading has been reached and maintained when the top of said guide sleeve and inner liner is flush with the top of said packing flange.

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