 Generally, axial pumps tend to give much lower pressures than centrifugal pumps, and a few bars is not uncommon.They are, however, still useful – axial pumps are commonly used as "inducers" for centrifugal pumps, which raise the inlet pressure of the centrifugal pump enough to prevent excessive cavitation from occurring therein.Turbopumps have a reputation for being extremely hard to design to get optimal performance.