HUALUO 4 inch stainless steel fountain pumps are made of stainless steel for 4-inch or larger boreholes. They meet NEMA mounting standards and provide hydraulic efficiency and stable water supply under continuous or high-frequency cycling.
The 4SP series has a steep performance curve: small changes in flow cause significant pressure changes. The 4SP3 and 4SP5 are suitable for high-pressure applications such as multi-story residential supply and fountain nozzles. The 4SP14 has a flatter curve, delivering higher flow (up to 18 m³/h) for rapid tank filling.
Why Partners Trust HUALUO 4 inch submersible pumps?
High-frequency start-stop capable – Meets industrial fountain and deep-well standards. Handles frequent cycles without reducing motor or hydraulic life.
100% stainless steel – Maximum resistance to corrosion and abrasion.
Global use – Deployed in 30+ countries and regions. Quality assured.
