SHURflo Automatic Demand Pumps. Model 2088-443-144 "Standard Pump", 12vDC, 9.1 max amps, max 40psi. Diaphragm pump that can deliver up to 3.5gpm open flow from a DC battery pack.(Self priming to 12 feet vertical head). These pumps are ideal for cabin, watering projects, or small home system. Feature 45psi demand switch. More info... Shurflo-Solar_2088.pdf