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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
F16K5/12—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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FR530756D1920-05-151920-12-04Dispositif de réglage de l'admission du gaz et de l'air dans les fourneaux à gaz
ExpiredFR530756A
(fr)