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
F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
F16K13/08—Arrangements for cutting-off not used
F16K13/10—Arrangements for cutting-off not used by means of liquid or granular medium