Spring ball valve

The utility model provides a spring ball valve, wherein the shell body be divided into about two parts, go up the casing, down the casing pass through threaded connection, the peach shaped ball be arranged in the casing, peach shaped ball surface heat cure bonding one deck butadiene acrylonitrile ru...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MA ZHAOCHANG, CHENG RENYONG
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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