Ball-throwing top-open type fixed valve

The utility model provides a pitching push-open type fixed valve which comprises an outer pipe assembly, an inner pipe assembly, an inner pipe assembly and an inner pipe assembly. The blocking piece element is arranged in the containing groove, one end of the blocking piece element is hinged to the...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	JIANG GUOQING, ZOU ZHENGLU, HAN XIAODONG, WANG SHUHUI, HAN CHAO, BAI LONG, GAO YONGPAN, DONG PENGYI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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