QC Series Centrifugal pumps are built and designed in compliance with 3A Standards, with the following characteristics: Open Impeller Volute casing with central suction Fittings: Clamp (standard), Flange, NPT thread, Weld, Bevel Seat and DIN 304 stainless steel support legs and bracket kit Manufactured in compliance with NEMA (American) and IEC (European) standards Can operate at both 60Hz and 50Hz 304 stainless steel adaptor All parts in contact with the product are made from 316L stainless steel.