VENTILSTAMMEPAKNING

A valve body (B) has a stem passage rotatably receiving a valve stem (C). A packing (52) surrounds the stem in the passage and a packing nut (100) threaded on the stem applies axial force to radially expand the packing into sealing engagement with the stem and passage wall. The packing comprises co-...

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Bibliographische Detailangaben
Hauptverfasser:	WILLIAMS, PETER CHARLES, KOCH, ULRICH HUBERT, MANNION, THOMAS MICHAEL, YUSOKO, EDWARD MICHAEL
Format:	Patent
Sprache:	nor
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:	A valve body (B) has a stem passage rotatably receiving a valve stem (C). A packing (52) surrounds the stem in the passage and a packing nut (100) threaded on the stem applies axial force to radially expand the packing into sealing engagement with the stem and passage wall. The packing comprises co- operating first and second packing members (60, 62) engaging at angularly disposed slippage surfaces for translation of compressive axial forces into radial expansion and sealing engagement with the stem and with the passage wall. A packing support ring (50) engages the end face of the packing adjacent the packing nut. A gland (58) engages the support ring (50) and a pair of reversely positioned spring washers (90a, 90b) are interposed between the gland and the packing nut. A handle (102) is attached to the stem by a handle nut (106), and a spring washer (90c) interposed between the handle and the handle nut prevents loosening of the handle nut.