Design and features 8 mm cold-formed plate casing with volute. Flanges: PN16 according to DIN2633. Double-curvature impeller with blades on the rear side. Axial adjustment of the impeller. Single mechanical seal according to EN12756 L1K. Fully-drainable pump. IEC B3 ( B35 close-coupled models) motors, IP55,   F-class insulation. Drain port: G ½ " ( BSP) . Materials Parts in contact with pumped media : AISI 316L Lantern and bearing support : GG-22 Gaskets ( standard)   : EPDM according to FDA Mechanical seal ( standard)     :   SiC/ C/ EPDM Intenal surface finish of the casing and impeller : Blasted External surface finish  : Blasted