Seaflo 12v Water Pressure Diaphragm Pump 3.8 LPM 1.0 GPM 40 PSI - Caravan/rv/boat/marine On-demand, automatic water pump for small boats, campers, and vans Built-in Adjustable 35 PSI pressure switch for automatic stop/start Self-priming--allows it to be mounted above tank; Able to run dry Built-in thermal protector; 3/8-inch hose barb ports 1.2 Gallons Per Minute