... max. dia. of particle could reach 19mm BK series stainless steel centrifugal pumps with semi-open impeller, max. solid 19mm, produced by ... of SUS304 or SUS316, with features of exchangeable components, stable quality, small size, light weight, corrosion resisting, high efficiency, long working life ... .23.015141312.5119.997 -BK400T3.04.0181716151412.511.5108 Stainless Steel Pumps with Open Impeller