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