... max. dia. of particle could reach 19mm BK series stainless steel centrifugal pumps with semi-open impeller, max. solid 19mm, produced ... SUS316, with features of exchangeable components, stable quality, small size, light weight, corrosion resisting, high efficiency, long working life, beautiful appearance ... 23.015141312.5119.997 -BK400T3.04.0181716151412.511.5108 Stainless Steel Pumps with Open Impeller