... function,set up two step reduce pressure,simple operation,high safety,the Max.flow speed is 30I/MIN Pulse-charge,auto alarm ... function,set up two step reduce pressure,simple operation,high safety,the Max.flow speed is 30I/minTechnical Data:Power supply:AC110 ... rate setting (three level):10/20/30/min The maximum flow speed is 40I/min; reduce pressure set up with two ...