submersible pump be driven by RB50,RB80 driving motor,the max of pumpage is 18M-25M,POWER/Rotation:3.5-6.0HP Model:RB50,RB80Discharge Diameter:2"-3"Maximum of pumpage: 18-25MMaximum capacity:1,200L/MINHose Lenth:4-7MPower Rotation:3.5-6.0HP ,3000--3600RPM ,Gasoline submersible pump(dynapac coupling)