... steel pumps with open impeller, the max. dia. of particle could reach 19mm BK series stainless steel centrifugal pumps with semi-open ... body, impeller and shaft are made of SUS304 or SUS316, with features of exchangeable components, stable quality, small size, light ... 2-pole induction motor, aluminum alloy motor case, single phase with thermal protector, Class F or B, Protection IP54, Continuous ...