The 4 inches submersibles SQ/SQE line covers all flow requirements from 1.2 to 95 gpm and heads up to 2000 feet. SP submersible pumps are renowned for their high efficiency and reliability throughout the range. Made entirely of corrosion-resistant stainless steel, SP pumps are ideal for a wide variety of applications; Groundwater supply to waterworks Irrigation in horticulture and agriculture Groundwater lowering Pressure boosting Industrial applications.