Everflo EF1000 Diaphragm / Demand WATER TRANSFER PUMP 1.0 GPM 12V Volt 40 psi 1.0 GPM w/ 40 psi Demand Switch Viton Valves, Santoprene Diaphragm 3/8" Barbed Fittings Prewired with 2 Wire Molded Connectors Self Priming up to 4 Vertical Feet