Methods and apparatus to load a valve packing

Methods and apparatus to load a valve packing are described. An example method disclosed herein includes adjusting a packing flange nut to a position corresponding at least approximately to a free condition of a biasing assembly, coupling a first gauge member to a first flange, adjusting a first gap...

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Bibliographische Detailangaben
Hauptverfasser:	HUTCHENS WILBUR DEAN, COLLISON RANDALL SCOTT, BOVEE LOREN LEE, STANZE DAVID CHARLES
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	Methods and apparatus to load a valve packing are described. An example method disclosed herein includes adjusting a packing flange nut to a position corresponding at least approximately to a free condition of a biasing assembly, coupling a first gauge member to a first flange, adjusting a first gap between a first surface of the first gauge member and a reference surface opposite the first flange to a first predetermined distance, and tightening the packing flange nut so that the first surface of the first gauge member substantially aligns with or engages the reference surface and causes a load assembly to provide a first predetermined packing stress to the valve packing when the first gauge member substantially aligns with or engages the reference surface.