Plunger Chemical Metering Pumps Flow: 0-300 lph, Pressure: 0-500 Bar Power:370W,550W,220V/380V/400V/110V, 50/60Hz Plunger Chemical Metering PumpsProduct DescriptionFlow: 0-300 lphPressure: 0-500 BarPower:370W,550W,220V/380V/400V/110V, 50/60HzDrive System: 2 and 3 phase motor, Anti-explosion motor,Frequency conversion motorFlow Control: Manual operationProtection degree: IP55 Work ...