Jim Elsey
Answers to Common Pumping Mysteries 
Jim Elsey shares 4 more stories from the pump twilight zone
Solutions for Unexplained Pump Failure 
Jim Elsey on the mysteries of the twilight zone
Why Cavitation Occurs & Ways to Treat it
Why you should be worried about a few bubbles
19 Tips and Common Alignment Mistakes
Does your pump have an alignment problem? Part 2





Does Your Pump Have an Alignment Problem? Part 1
Common Pumping Mistakes
The Basics of Suction Specific Speed
NSS describes relationship between speed, flow rate and NPSHr of impeller
Best Practices for Strainer Location
Deciding between placing this equipment on the suction or discharge side of the pump.
How to Solve NPSHa Problems
Jim Elsey's tips on addressing cavitation.





How to Calculate NPSHa for Systems Under Vacuum
The equivalent suction lift is equal to the difference between the “vacuum effect” and the net submergence.
Calculate NPSHa for a Closed & Pressurized System
Don’t mistake suction pressure for NPSHa.
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.
NPSH Calculation: A Step-by-Step Guide
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