Shurflo 2088-343-135 Automatic-Demand Diaphragm Pump, 12VDC, 45 PSI Demand Switch, 3.0 GPM With Viton Valves, Santoprene Diaphragm, Self-Priming, 10 AMPS (Max), 1/2-14 NPSM Port

Self-Priming up to 12 Vertical Feet [3.7M]Chemically Resistant MaterialsAutomatic DemandBuilt-In Check Valve (May Vary by Model) to Prevent Back Flow of FluidSupported for agriculture