Evaluating the entire system for possible improvement will help facilities lower energy use and improve reliability.
Common Pumping Mistakes
Common Pumping Mistakes
When a pump operates far from its best efficiency point (BEP) flow—either to the right or to the left—vibration, cavitation, overload and damage to the equipment can result. The letter below is an...
Pump users may have a reasonable expectation that a properly installed fixed-speed pump will run reliably at any point on the manufacturer's published head-capacity curve. While this is true for most...
10 Tips for Better Pump Life Management
In my experience, few plant personnel are concerned with how a pump is running until after it breaks down. When the whole plant unexpectedly shuts down, then the pump gets attention. By simply...

With more focus on energy efficiency these days, owners will rely on pump experts to assist in the determination of efficient pumping solutions. For variable flow systems this poses some challenges when single and parallel connected variable speed pumps are evaluated. This webinar will help to answer questions like: “How many pumps should our system use?” and “How should we sequence (stage) on additional pumps?”

This 1-hour webinar will teach you how to read a pump curve and how to use that information to:

  • Select and size pumps and drivers
  • Understand power consumption strategies
  • And more

See links above to view a video playback or download a PDF presentation, and get more information about the rest of the series here!

I often witness end users operating pumps to the left side of the curve, away from the best efficiency point (BEP) and near shutoff. This is not the ideal area because of issues with shaft deflection,...
Last of Four Parts Editor's Note: While running a pump at its best efficiency point saves money, reduces downtime and improves performance, many plant managers are unaware of how their equipment is...
Part 3 Editor's Note: While running a pump at its best efficiency point saves money, reduces downtime and improves performance, many plant managers are unaware of how their equipment is actually...
These pumps prevent equipment from corroding, provide lower costs and increase efficiency.
Understanding this complex topic can help end users avoid common pitfalls.
While running a pump at its best efficiency point saves money, reduces downtime and improves performance, many plant managers are unaware of how their equipment is actually performing. This series,...
Editor's Note: While running a pump at its best efficiency point saves money, reduces downtime and improves performance, many plant managers are unaware of how their equipment is actually...
First of Two Parts Centrifugal pumps are commonly used for most liquid pumping services. For viscous liquids, positive displacement pumps often perform better. However, many engineers specify...
I received many comments from Pumps & Systems readers on "How to Calculate Pump Specific Speed" (Pumps & Systems, January 2015) and "How Efficient Is Your Pump?" (Pumps & Systems, February 2015). ...
Sliding vane pumps cut refinery energy costs by an average of $350,000 per year.
Last month's column (Pumps & Systems, February 2014) reviewed the pump selection process and described how many users oversize pumps by adding design margins to account for unknown conditions present...
In 2014, this column focused on improving the operation of piping systems by performing pumped system assessments. The columns have covered energy cost balance sheets, the assessment process and the...
Q. What specifications are required for series and parallel pump operations? A. Pumps intended to operate in series must be close in size because of the rate of flow. Pumps operating in series...
This is the first article in a four-part series. Four part 2, click here. Second only to electric motors, centrifugal pumps are usually the simplest machines in a typical process plant. Pumps...
Unlock a pump’s full potential while saving energy and maintenance dollars.
One of the supposed advantages of centrifugal pumps when compared to positive displacement pumps is their ability to operate across a wide flow range. Because a centrifugal pump operates at the...
A popular Pumps & Systems LinkedIn group conversation:I would like to thank you for the publication Pumps & Systems. I find it very useful and informative! It is the one trade magazine I look...
Unlock Opportunities to Improve Oversized Pump Efficiency
Walking the system and asking questions before taking measurements is vital.
Upgrades Maximize Efficiency of 82-Year-Old Refinery Pump
Thorough analysis, testing and upgrades renew the life of an old single-stage, double-suction, horizontal split case pump.
Centrifugal Pump Efficiency—Preservation of Efficiency
Editor's Note: This is the fourth in a six-part series on centrifugal pump efficiency. For other articles in this series, click here.The performance of a centrifugal pump with a trimmed impeller will...
Best Efficiency Point and Best Operation Point
Best Efficiency Point (BEP) is the point at which a pump is least prone to failure and its life expectancy is greatest