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Item #: C140e
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Description  more details

New to the Standard:

This standard is an update to HI 40.6-2016. The 2021 Edition of this standard includes the following revisions and additions:

  • New Appendix E that provides applicable exemptions and modifications to the test procedure when testing circulator pumps.
  • Updated Appendix D to provide more clarity in the guidance on recalibration periods.
  • General non-substantive editorial updates throughout the standard.


Scope: This standard establishes minimum testing protocols for testing of rotodynamic pumps for determination of pump efficiency in a uniform manner. It firmly aligns with the U.S. Department of Energy (DOE) energy conservation standards 81 FR 4368 (January 26, 2016) and test procedures 81 FR 4086 (January 25, 2016) for  pumps, which incorporated by reference HI 40.6-2014 with certain exceptions and additions. The 2016 Edition of this standard addressed the exceptions and additions, which was carried-over into the 2021 Edition.

HI 40.6 is intended to be used for efficiency testing at pump test facilities or laboratories only. Industry experience shows that it is very difficult to perform measurements accurate enough to satisfy the requirements in this standard when testing is performed in the field. Therefore field-testing is not permitted as a method of efficiency testing per this standard.

This standard is not intended for production pump testing. Refer to ANSI/HI 14.6 Rotodynamic Pumps for Hydraulic Performance Acceptance Tests and ANSI/HI 11.6 Rotodynamic Submersible Pumps for Hydraulic Performance, Hydrostatic Pressure, Mechanical, and Electrical Acceptance Tests for production pump testing.

ISBN: 978-1-935762-90-4
Pages: 54
Approval Date: 2021
Table of Contents: View in PDF format
Also Available in Hardcopy: View now

Important Notice: 

This standard is available for immediate download in secure PDF format. Standards in this format are a single-user license and are encrypted for security purposes. Each standard is authorized to a single login and password on a single desktop or laptop computer. The end-user license prohibits installation of these files on a network server or their shared use in a network environment.  These files may be transferred from an old computer to a new computer by following the instructions provided upon purchase or available online at estore.pumps.org/about.aspx.

To view HI Standards in this format requires the download of the free Adobe® Reader®. Authorization requires download of an Adobe-approved plug-in from FileOpen Systems, Inc. and Internet access to complete the authorization process. Security permissions of these files allow printing and the addition of comments. Once authorized these files may be accessed with or without connection to the Internet.


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