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F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
F16K5/08—Details
F16K5/22—Features relating to lubrication
F16K5/222—Features relating to lubrication for plugs with conical surfaces
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FR488641D1917-01-271918-01-29Robinet pour conduites de fluide élastique sous pression
ExpiredFR488641A
(fr)