ANSI/HI 9.6.7-2015 outlines the method for predicting performance of rotodynamic pumps in Newtonian liquids of viscosity greater than water. The standard applies to single and multi-stage rotodynamic pumps having radial impellers n_s = 60, (N_s = 3000), handling liquids exhibiting Newtonian behavior, and a kinematic viscosity greater than 1 and less than 4000 centistokes.

What's New: The 2015 version of ANSI/HI 9.6.7 differs from the 2010 version in a few areas. New data has become available as outlined in Section 9.6.7.4.1, including new references in the bibliography. Expanded guidance on the effect of speed versus torque characteristics is found in Section 9.6.7.6.1.