Thanks to the Intex 26642 sand pump, you can keep your above-ground pool clean throughout the season. The natural sand guarantees water filtration, and the 6-function control valve allows you to: filter, wash and rinse, recirculate the water, drain, and close the system. The type of sand used is ground quartz, with a silicon content of 99% and grain size of 0.4-0.8 mm (not included in the package). Additionally, the built-in 24-hour timer allows you to set the washing time. The filter basket offers easy cleaning and extends the life of the sand. This pump requires almost no maintenance, except for replacing the sand every 5 years.