Water distributor capable of checking seal and valve core of backflow-preventing one-way valve for water distributor

The utility model relates to a water distributor capable of being checked and sealed and a valve element of a backflow-preventing one-way valve for the water distributor. The water distributor capableof examining seal comprises a water distributor main body with a water injection hole in the center,...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CHEN PING, MA HONGWEI, YU TIEJING, XING DEGANG, ZHU HUI, DONG JUNFENG, JIAO MINGYUAN, CHEN JING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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