Mixed-flow impeller is an impeller for a pump or compressor, which combines radial- and axial-flow principles. They are used for medium discharges and medium heads. This impeller imparts energy partially by centrifugal force and partially by axial force, since the vanes act partially as an axial compressor. Mixed flow impeller pumps are suitable for pumping untreated wastewater and storm water. They operate at higher speeds and are usually of lighter construction. They also deliver greater airflow than centrifugal fans, and more pressure than axial fans. The impellers are designed using the latest computer aided technology, and the MF blade angle adjustment feature provides a wide range of performance options that are exceptionally quiet and efficient.