Grundfos SP stainless steel submersible pumps for groundwater supply, well feedwater for treatment systems, irrigation, dewatering, and pressure boosting. The SP range is renowned for high efficiency and reliability: state-of-the-art hydraulic design, all corrosion-resistant stainless steel construction (AISI 304, 316, and 904L grades), flows from 5 to 1,100 GPM nominal, heads to 2,200+ ft, and motors from 1/2 to 250 HP in 4" to 10" borehole sizes. All pumps sold as complete pump-and-motor units.