High Pressure Metering Pump widely used in water treatment process such asmunicipal tap water,swimming pools, urban sewage, industrial effluent and kinds of chemical dosing,etc Adjustment Options Manual Adjustment:wethwer the pump running or stopped ·Minimum adjustment scale is 1% Electric Stroke Controlller:external control signal adjust stroke length ·Power Supply:220V-50Hz,1 phase ·Input Signal:4-20mA ·Output Signal:4-20mA/1-5V feedback signal. Frequency Inverter:external control signal,adjust stroke speed ·220V-50Hz,1phase/380V-50Hz,3phase ·Input Signal:4-20mA High Pressure Metering Pump's code and performance "Environmental protection system is a difficult problem, because any industry can use environmental protection system. Enterprises and employees may not be aware of which applications use these components. But unless you use these environmentally friendly devices every day, it's easy to ignore them and their uses.