1.VERY high safety of operation 2. Flow 0-400 lph, Pressure 0-1.0 Mpa air pump power pump sump pumpProduct DescriptionFlow:0-420 lphPressure: 0-10BarPower: 370W/550W,220V / 380V / 400V/110V,50/60HzDrive System: two and three phase motor,Anti-explosion motorFrequency conversion motorProtection Degree: IP55Flow Control: Manual operation, Automatic(receive 4-20mA signal)MaterialPump head: SUS304, ...