The DBH range of horizontal multistage centrifugal pumps are designed for continuous duty in various water transfer duties with particular application in pumping slightly corrosive liquids. The pump has small physical dimensions, axial suction port, and radial discharge and is base plate mounted. The pump body, suction and discharge ports are made from AISI 316 stainless steel as is all the other parts in contact with the pumped liquid. The mechanical seal is made from silicon carbide designed for easy replacement. Both pump and continuously rated motor unit are of monoblock design and particular attention has been paid to quietness and smooth operation.