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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
F16K5/10—Means for additional adjustment of the rate of flow
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FR1107715D1954-06-251954-06-25
Further development of angle valves for central heating radiators of the double adjustment type
ExpiredFR1107715A
(en)
Improvements made to valves for central heating radiators of the double adjustment type with first adjustment shutter rotating with the key and sliding in relation to it