21-56-5580 VALVE STEM PACKING CONTAINMENTFOR HIGH PRESSURE, HIGH TEMPERATURE Abstract of the DisclosureA fluid valve for use in elevated pressure andtemperature conditions. Composition material wiperrings are provided in the packing bore between thepacking follower and the packing box ring. Thecomposition wiper rings have an inner diametersubstantially the same as the valve stem diameter toinhibit the extrusion of packing material during slidingvalve operation.

Title
Confinement de garniture de tige de soupape pour systeme a pression et a temperature elevees
Valve stem packing containment for high pressure, high temperature
Application Number
577483
Publication Number
1315765
Application Date
September 15, 1988
Publication Date
April 6, 1993
Inventor
Wilson Robert Thomas
Davis James Russell
Agent
MCFADDEN FINCHAM
Assignee
Fisher Controls International
IPC
F16K 41/02
F16J 15/18
F16J 15/16
F16K 41/04
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