The VORTEX series filters are centrifugal separator filters (hydrocyclones) particularly suitable for treating water containing sand and/or suspended solids with a specific weight higher than that of water (Ps ≥ 1). VORTEX is able to remove up to 99% of sand with dimensions greater than 75 microns and up to 65% with dimensions greater than 50 microns. The separation of the particles occurs through the action of centrifugal force: the particular internal configuration of the filter transforms the pressure energy into centrifugal kinetic energy which accelerates the heavier particles towards the walls of the filter, where they fall towards the bottom and settle. Designed to minimize pressure losses while maintaining excellent separation efficiencies, VORTEX filters work continuously, have no moving mechanical parts or filtering elements inside them, can be inspected and the bottom discharge takes place from a special opening located on the bottom of the filter and can be done continuously or discontinuously.