ZW-series chemical axial flow pump is single-stage cantilever pump. It adopts front-open door structure. This structure is very simple and convenient for maintaining, because pump body and pipeline are not needed to be disassembled. Pump body is supported from its middle; alignment of rotor is good, packing seal is adopted, when specially required, mechanical seal can be adopted for seal. Impeller and suction nozzle match very well. When transferring abrasive materials, the only thing need to do is to change impeller and suction nozzle. In this way, the service life of pump body is