shielding pump is a pump and motor into one of the products, the surface of each of a particular set of metal shielding material, filled and sealed in the stator and the rotor outer surface of their respective , and the liquid medium is not fed contact with the intimate and the motor windings from corrosion , the stator winding insulation to maintain a good performance , coupled with the pump impeller and motor connected to a coaxial , only static seal structure to ensure that not a drop of transmission fluid leak , completely avoid environmental pollution caused by the leak , and really played a role in safety and environmental protection . Features 1, due to the transmission fluid does not leak to the outside , it applies to harmful liquids, explosive and flammable liquids, corrosive liquids and precious liquids ; 2, due to not breathe the outside air , it applies to the vacuum system operation and contacts with the outside gas liquids can deteriorate ; 3, because no seal , it applies to higher system pressure high-temperature and low-temperature liquid ; 4 , since no oil, transmission fluid does not pollute and avoid oiling trouble ; 5, due to coaxial motor and pump assembly , small size, light weight, does not occupy space , easy disassembly inspection ; 6 , because no cooling fan motor , low noise operation . Model significance BA32H - 222H2BM-50-40-160-FV B - Basic A - Horizontal Band linker 3 - Material Department 2 - design pressure H - Flange Standard HG 222 - Motor No. H - Insulation class H 2 - Voltage distinguish B - Direct starter with thermal protection M - on board bearing monitoring 50 - Inhalation diameter Ø50mm 40 - exclude diameter Ø40mm 160 - impeller nominal diameter Ø160mm FV - with inducer various types of standard structure