Design and features Bare shaft or close-coupled construction. Reversible and self-priming pump. Machined investment casting casing. Double flat drive of the impeller. Connections DIN  11851. External single mechanical seal. IEC motor: B34, 1500 rpm, 3 ph, 230/ 400 V, 50 Hz, IP55. Easy maintenance. White painted. Materials Parts in contact with pumped media      :   AISI 316L Lantern and bearing support  :   GG 22 Other parts  :   AISI 304 Impeller    : Neoprene Gaskets          :   NBR Mechanical seal      : Cer/ C/ NBR Surface finish :   polished, Ra d 0.8 µ m I Technical specifications Max.flow : 28 m³ / h 132 US GPM Max. working pressure* : 2 - 4 bar 29 - 58 PSI Max. working tempreature : 80 º C 176 º F Max.speed : 1500 rpm