Grundfos SQFlex Submersible Solar Pumps Submersible solar pump - Grundfos SQFlex Grundfos SQFlex 11 SQF-2 Helical Rotor Submersible Solar Pump The SQFlex family is an environmentally-friendly water supply solution. SQFlex pumps are fitted with a permanent magnet motor which enables the efficient use of energy from nature. The pump system offers the perfect water supply solution in remote areas where water is scarce and the power supply is non-existent or unreliable. Applications The SQFlex systems are suitable for applications in remote locations: Villages, schools, hospitals, small houses Farms and irrigation of greenhouses Game parks and game farms Conservation areas. Features and benefits Renewable energy supply: solar panels or wind turbines Built-in electronics, easy installation Reliable water supply Low operating costs Dry-running protection.