Self-priming centrifugal electric pump for swimming pools. Self-priming at 2 m. Built-in pre-filter of great capacity (8 litres). Pre-filter with transparent lid in polycarbonate which allows easy observation of the pre-filter basket. The pre-filter is closed with a knob system of easy accessibility. Pump body made in polypropylene reinforced with fibreglass, resistant to the chemical products in the swimming pool, guaranteed to last a long time. Mechanical seal in graphite and ceramics. Motor shaft manufactured in stainless steel AISI 316L. Motor with IP-55 protection, at 2.850 r.p.m. Tension of mains feed at 230/400V-50Hz three-phase (Ask for 400/690V-50Hz versions). Possibility of IE2 Efficiency Motors upon request Possibility of 60Hz upon request. Versions of 3HP, 4HP and 5,5HP. Suction connection Ø90 mm, return connection Ø75 mm. Both supplied with bush connections.