Design and features Casing manufactured with cold-formed plate. DIN connections ( standard) . Open impeller manufactured with stainless steel investment casting technology. Sanitary mechanical seal. Pump certified according to 3A sanitary standards. Very robust stainless steel cast lantern. IEC B5 motors ( B14 for S-15, B35 motors T.200, 225, 250 and B3 for close- coupled models) , IP55,   F-class insulation. Pump support from AISI 304. Materials Parts in contact with pumped media : AISI 316L Other parts in stainless steel        : AISI 304 Gaskets ( standard)         : EPDM    Mechanical seal ( standard)         :   St.St./ C/ EPDM Inside surface finishing        : Ra < 0.8 µ m. Outside surface finishing : Mirror polished