The classic among superior pool water recirculation pumps: the solid cast design of the prefilter (available in grey cast iron or bronze) is extremely robust, resistant to pressure and ideally suitable for large flow rates. Four different prefilter sizes are available. A technically-optimised pump/filter combination can be chosen for a selected maximum intake speed after estimation of the amount of dirt which will arise. Designed for large swimming pool complexes, particularly thermal springs, therapeutic baths and spas – any application where maximum reliability and stability are of the highest priority.