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WQJB Pneumatic filling pump is made up of a plunger pneumatic motor and a plunger hydro pump in series, likes a gun bore. It uses 1: 2 ratio of pneumatic and hydraulic pressure, is a device of compact, agility, convenient, reliable and longevity. It can insert into a standard oil drum directly or into fluid via tube, to pump oil plants, lubricant, liquid and solvent, an advanced filling tool needed of metallurgy, mine, heavy machine, port, petroleum, chemistry industry, traffic and oil carrying trade.

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