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ANSI/HI 9.6.7

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Effects of Liquid Viscosity on Rotodynamic (Centrifugal and Vertical) Pump Performance
Hydraulic Institute / 2010 / 44 pages
ISBN: 1935762041

Handling viscous liquids? Predict the change in performance for your rotodynamic pumps!

* This standard, which was revised extensively in 2004, has been updated to provide better results and be easier to use for those involved with pumping liquids having a higher viscosity than water
* The standard applies to single and multistage rotodynamic (centrifugal and vertical) pumps having radial impellers ns = 60, (Ns = 3000), handling liquids exhibiting Newtonian behavior, and a kinematic viscosity greater than 1 and less than 4000 centistokes.
* Major improvements of the 2010 version of the standard compared to the 2004 version
1. The mathematics have been refined to provide better results throughout
2. The upper limit of the flow range has been increased to 410 m3/h (1800 gpm). Statements have been added that discuss the difference between the limits of this document and the limits of the widely circulated pre-2004 viscosity correction standard

* The figures showing pump characteristics when pumping viscous liquids have been clarified for improved accuracy
* A number of minor editorial changes have been made to make this document easier to read and provide an increase in educational content
* New test data that has recently been made available to the committee had been used to confirm the empirical relationships and to justify the extension of the flow limits

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