Grundfos range of submersible pumps (SP) is recognized worldwide for its reliable performance, high energy efficiency and long product life. Invented in 1967, the SP pump was the first ever stainless steel submersible pump and to this day it remains the benchmark in the market. SP pumps cover a wide range of applications where efficient water pumping is required, including water supply, irrigation, mining, fountains, reverse osmosis, dewatering, ground water lowering and many more. The new upgraded and extended range of high capacity 4 in submersible pumps which have improved octagonal discharge, cable guard attachment, wear resistance and optimized hydraulics offer increased performance and efficiency.