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Publication of BE680630ApublicationCriticalpatent/BE680630A/xx
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
F16K49/00—Means in or on valves for heating or cooling
F16K49/005—Circulation means for a separate heat transfer fluid
F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element