50Gpump match 1.2A transformer. And change the volts 220V to 24v 36v and 48v the working flow is 0.12GPM..We use the pump to increse the pressure ,so the machine can work under a higher press about 6-8kg. The transformer change the volts ,then it wil be safe to use the machine and not worry about the electricity. We also have 100G nd 400G pump abd their transformers .