Valterra's HydroMax Automatic RV Freshwater Pump is a direct OEM replacement for 3.0 GPM 12VDC Demand Pumps and includes pre-filter and 1/2 in. hose fittings. Pumps are self-priming and feature a built-in check valve and thermal overload. They can also run dry without damaging the unit. Volts: 12. Amps: 10 Maximum. Fuse: 15 Amp. Pressure Setting: 55 PSI / 3.8 in. bar.