Long-service oil pumping pump valve

The utility model discloses a long-service oil pumping pump valve which is used for prolonging the service life of the oil pumping pump valve and is applicable to an oil exploitation sucker-rod pumping well. The long-service oil pumping pump valve consists of a joint (1-1), a valve cover (1-3), a va...

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Bibliographische Detailangaben
Hauptverfasser:	CHEN BIN, XIE WENXIAN, LV FENGMEI, WANG DONGHAI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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