... pumpProduct DescriptionFlow:0-420 lphPressure: 0-10BarPower: 370W/550W,220V / 380V / 400V/110V,50/60HzDrive System: two ... of operation. Mechanical actuate diaphragm. Changeable eccentric drive2.Power off seal,no leakage,with security delivery device, ... the body.PurposeWidely used in petroleum, chemical industry, electric power, metallurgy, mining, shipbuilding,light industry, agriculture, national ...