Formation of surface or submerged vortices and excessive pre-swirl can lead to air entrainment and performance drop-off. Standard Intake Configurations
Non-uniform velocity distributions at the pump suction can significantly lower hydraulic performance. ansi hi 9.8 rotodynamic pumps for pump intake design
The standard, titled Rotodynamic Pumps for Pump Intake Design , is the definitive American National Standard for engineering efficient, reliable pump stations. Developed by the Hydraulic Institute (HI) , this standard provides the technical framework for designing new intakes and modifying existing ones to ensure optimal hydraulic performance. Core Objectives of ANSI/HI 9.8 Formation of surface or submerged vortices and excessive