3.0 GPM Fresh Water Pump Reviews

The SHUR-4138-111-E65 Aqua King II Standard 3.0 freshwater pump is engineered to supply dependable on-demand water pressure in marine and recreational vehicle applications. Its four-chamber diaphragm design, internal bypass, and self-priming capability help maintain smooth water flow while minimizing rapid cycling and pressure fluctuations. • Delivers up to 3.0 GPM flow with a 55 PSI shut-off pressure • Four independent pump chambers and an internal bypass provide smooth, consistent water delivery • Self-priming up to 6 feet for flexible installation options • Unique over-molded single-piece diaphragm can run dry without damage to the pump • Built-in check valve, sealed pressure switch, and thermal overload protection enhance system reliability • 12-volt DC operation with corrosion-resistant electro-coated motor, ignition protection, 1/2"-14 NPSM ports, and two included 1/2" hose barb fittings The Aqua King II Standard 3.0 is designed for freshwater systems that require dependable pressure, smooth flow, and durable operation. Its service-friendly design, protective features, and direct replacement compatibility with Shurflo 3901-0216 make it a reliable choice for marine and RV water systems.