AQUA KING™ II Standard Fresh Water Pump - 24 VDC, 3.0 GPMShurflo'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 replacementSealed switchSealed motorCorrosion-resistant electro-coated motor4 independent chambersBuilt-in check valveCo-molded diaphragmAdjustable switchSelf-priming up to 6 FeetDry run capabilityThermally protectedIgnition-protected, CESpecifications:Voltage: 24 VDCFlow Rate: 3.0 GPM (11.35 LPM)Amps: 3.8Shut-Off Pressure: 55 PSI (3.8 BAR)