This standard covers rotodynamic pumps with centrifugal (radial),mixed flow, and axial flow impellers,as well as regenerative turbine and pitot tube type pumps, of all industrial/commercial types except vertically suspended diffuser turbine pumps.
HI 1.1-1.2-2008 history
2014HI 1.1-1.2-2014 Rotodynamic Centrifugal Pumps for Nomenclature and Definitions
2008HI 1.1-1.2-2008 Rotodynamic(Centrifugal) Pumps for Nomenclature and Definitions