Well washing group valve device with low starting pressure

The utility model discloses a low-starting-pressure well washing group valve device which comprises a valve body, the upper end of the valve body is in threaded connection with a limiting connector, a hollow columnar sliding sleeve core is arranged in the valve body in a sleeved mode, the valve body...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU YANPING, HU FUTANG, LIU XINYU, XING ZHANLONG, ZHAO MENGLONG
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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