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Priority to JP1989090088UpriorityCriticalpatent/JPH0330052U/ja
Priority to KR2019900008335Uprioritypatent/KR930004261Y1/ko
Publication of JPH0330052UpublicationCriticalpatent/JPH0330052U/ja
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