Delavan Diaphragm Pump 12V, 60PSI, 5.0GPM, Demand Pump Delavan 5850-201E 12-Volt Electric Diaphragm Pump - Demand Pump Max. Flow: 5.0 gpm ; Max. Pressure: 60 psi ; Max. Draw: 16.3 Amps ; Max. Fluid Temp: 140 deg. F Ports: 1/2" female NPT inlet and outlet Voltage: 12V DC electric motor Viton valves, Santoprene diaphragm for chemical resistance