CH447743ACH1631965ACH1631965ACH447743ACH 447743 ACH447743 ACH 447743ACH 1631965 ACH1631965 ACH 1631965ACH 1631965 ACH1631965 ACH 1631965ACH 447743 ACH447743 ACH 447743A
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Priority to CH1631965ApriorityCriticalpatent/CH447743A/fr
Priority to AT980466Aprioritypatent/AT270323B/de
Publication of CH447743ApublicationCriticalpatent/CH447743A/fr
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
F16K21/00—Fluid-delivery valves, e.g. self-closing valves
F16K21/04—Self-closing valves, i.e. closing automatically after operation
F16K21/06—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening