Petroleum dosing and pumping device

The utility model relates to the field of petroleum dosing, in particular to a petroleum dosing pumping device which comprises a main pump and an auxiliary pump which are assembled on a mounting seat, a main pump valve body and an auxiliary pump valve body are respectively arranged between the main...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG QUANHENG, KAN XUEPING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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