Eteyo 12v Dc Diaphragm Water Pump 5.5gpm 60psi Garden Marine Boat Caravan Motor The patented design delivers smooth consistent flow at all ranges of operation The balanced motor design incorporates precision ball bearings for long life All pumps have sealed switches and are finished with a Electro Coating to inhibit corrosion. 12v DC Diaphragm pump is specially made for RV/MARINE Yachts Marine Duty Fresh Water Pumps provide years of quiet operation