Vertical installation, multi-stage, radial split, cylindrical barrel, the first stage of the use of anti-cavitation performance of the impeller. In the case of a large differential pressure, the balance drum structure is used to balance the axial force, and the residual axial force is received by the angular contact ball bearings in pairs. The housing is only subjected to inlet pressure, and the length of the housing and the depth of installation of the pump are determined by the NPSH cavitation performance requirements
