Jim Elsey
Calculating NPSHa When the Liquid Is Above Ambient Temperature
Don't forget to take vapor pressure into consideration.
Calculate NPSHa for a Suction Lift Condition
Learn the difference between suction lift and flooded suction.
Step by Step Calculation of NPSHa
The first of a five-part NPSH primer series.
22 Basic Pump Facts You Should Know
Jim Elsey helps you avoid common centrifugal pump mistakes





Newtonian vs. Non-Newtonian Fluids
Learn the difference between viscosity and shear.
Under Pressure: The Dangers of Vapor Pressure
Avoid cavitation with calculations and a focus on this aspect of the pumped fluid.
Maintaining Pump Systems for Reliable and Efficient Operation
Common ways your equipment can fail
Minimum Flow Redux
Pumps can last for decades when operated correctly.





How to Reduce or Eliminate Air Entrainment
Follow these steps to halt the secret destroyer of pumps
Most Common Reasons for Air Entrainment in Pump Systems
How air is introduced into the system?
What a Drag: Effects of Fluid Viscosity on Centrifugal Pumps
Common Pumping Mistakes
How Efficient Is Your Pump System?
Common Pumping Mistakes
ANSI Pump Quiz Answers
These are the answers to the ANSI pump quiz that was published in the September 2017 issue.
Quiz: How Well Do You Know the ANSI Pump Specification?
Common Pumping Mistakes
Is a Slower Pump a Better Pump?
Common Pumping Mistakes
Pump Curves: Hydraulic Performance vs. Published Curve
Common Pumping Mistakes
A Beginner’s Guide to Progressive Cavity Pumps
Common Pumping Mistakes
Selection Tips for Pump Drivers
Common Pumping Mistakes
Meet the Pumps & Systems Columnists
As we celebrate National Columnist's Day, learn more about our monthly authors.
10 Ways to Improve Your Impeller
10 Ways to Improve Your Impeller
Common Pumping Mistakes
7 Steps to Grouting a Pump Base
Common Pumping Mistakes
Why Does the Pump Shaft Keep Breaking? 
Common Pumping Mistakes
12 New Year’s Resolutions for Your Pumps
Common Pumping Mistakes
13 Common Factors that Affect Pump Life
Common Pumping Mistakes
When Is a Spare Not a Spare?
Common Pumping Mistakes
Pump Ninja Quiz Explained & More Questions to Test Your Knowledge
Common Pumping Mistakes
More Pump Ninja Quiz Answers
These are the answers to the Pump Ninja Quiz that was published in the October issue.
Pros & Cons of Horizontal Split-Case Pumps
Common Pumping Mistakes
Use this Checklist to Stop Oil Leakage from Your Bearing Isolators 
Common Pumping Mistakes
Take this Quiz: Are You a Pump Ninja?
Common Pumping Mistakes