Columns and Blogs

These days, the importance of a fresh water supply and safely-treated wastewater return to the river cannot be overemphasized. No matter how hard we try, we are still a long way from the most efficient, economic and reliable ways to ensure that our cities are properly equipped and ready for the clean water challenge.

One of the major impacts on motor life is common sense—or maybe the lack thereof!

How viscosity affects centrifugal pumps

There are several ways to control two identical, parallel pumps operating under variable frequency control in pumping applications.

This month we will quickly look at the load types that comprise a typical AC circuit.

This is a follow-up to my column on predicting centrifugal pump performance (Pump & Systems, May 2011), and offers equations that will enable the engineer to perform a partial analysis of the impeller eye.

As a follow up on my AC Motors series, I thought it would be a good idea to provide a short overview of work, power and torque as it applies to the AC motor.

Last month, we studied the properties and effects of resistive, inductive and capacitive loads in an AC circuit.

As a follow up on my AC Motors series, I thought it would be a good idea to provide a short overview of work, power and torque as it applies to the AC motor.

When selecting a pump for variable speed operation, a number of conditions must be evaluated.

Several million gallons of wastewater flow through a typical wastewater treatment plant daily. Some statistics show this can amount to 50 to 100 gallons for every person using the system.
Pumps & Systems is proud to report that business is strong. As we continue to provide high-quality, valuable and practical editorial, our readers continue to be loyal.
I expect damage on this scale with a large hurricane…but one tornado? It doesn't seem possible, but it happened.
The Fluid Sealing Association (FSA) has come a long way since its inception in 1933. With today's membership representing more than 85 percent of the manufacturing capacity for fluid sealing devices in North America, the association also has an international scope.
With damages estimated at $196 billion, the disaster in Japan is certain to impact the international economy.
I was happy to be able to write the article, “The World's Largest Pump Station,” in the March issue of Pumps & Systems. Hopefully, this monumental station will help prevent another disastrous flood in the Crescent City.
With property damage estimated at $81 billion and more than 1,800 lives lost, Hurricane Katrina remains the costliest and deadliest natural disaster in U.S. history.
What do you want to know about what's going on with FSA and the sealing industry?
The pump world is buzzing about the recent news of ITT Corporation's decision to split the company into three distinct, publicly-traded companies.
One of civilization's earliest inventions, pump technology has not changed much through the years. Since 200 B.C., pumps have moved water and other viscous materials from Point A to Point B. No matter the consistency of the liquid—whether it's peanut butter or oil—there is a pump that can suck, push or lift it to its destination.

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