LPH8MA-PTC3-S38 Pump Series E Plus Electronic Chemical Metering Pumps - E+ 115.600 GPD Max Flow Rate @ 30 PSI, Flow Control: 4-20mADC Direct with Stop. 115 Volts, 50/60 Hz, 1/2" OD Tube Connections, GFPPL Head & Fittings, Ceramic Valve Ball, TFE Seat.