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Item #: B120
Member Price: $52.50
Price: $70.00
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Description  more details

What You Will Learn/Overall Benefits: Determine best operating region at a +/- efficiency point for optimum pump life, higher efficiency and reliability. 

Applicable Markets:  Standard addresses entire pump community in all markets.

Content: Preferred operating region (POR) and allowable operating region (AOR), factors affecting AOR, NPSH margin versus rate of flow, guideline when stable or unstable operation may be expected based on typical system head curves, pumps exhibiting a drooping head curve or a head curve with a dip, suction specific speed, intermittent operation outside the AOR.

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ISBN: 978-1-935762-58-4
Pages: 20
Approval Date: 2017
Table of Contents: View in PDF format
Also available in secure PDF: View now

Who Should Buy This Standard:  End users and engineering and consulting firms concerned with the best operating region for a pump.

What’s Changed from 2012 Revision:

  • Updated Table 9.6.3.1 — Preferred operating region related to specific speed
  • Updated Figure 9.6.3.3.8a – AOR limited by NPSH
  • Updated Figure 9.6.3.3.8b – NPSH margin versus rate of flow
  • Updated Figure 9.6.3.3.9a – Pump head versus rate of flow curve illustrating a “droop”
  • Added section 9.6.3.4 Intermittent operation outside the AOR

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 an 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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