AQUA KING™ II Standard Fresh Water Pump - 24 VDC, 3.0 GPM Shurflo's 4138 fresh water pump design was created with a unique over-molded single-piece diaphragm and internal by-pass, ensuring long life and top performance in all plumbing systems. The 4138 pump is constructed for smooth flow and no rapid cycling. The 4138 fresh water automatic demand pump is quiet, thermally protected, and can run dry without damage. Features: * 3901 replacement * Sealed switch * Sealed motor * Corrosion-resistant electro-coated motor * 4 independent chambers * Built-in check valve * Co-molded diaphragm * Adjustable switch * Self-priming up to 6 Feet * Dry run capability * Thermally protected * Ignition-protected, CE Specifications: * Voltage: 24 VDC * Flow Rate: 3.0 GPM (11.35 LPM) * Amps: 3.8 * Shut-Off Pressure: 55 PSI (3.8 BAR)