Centrifugal Pumps (Page 2)

 Tests show that solid-body plastic pumps are the best choice for oscillating applications.The demands that oscillating-displacement pumps place on their materials of construction are extreme due...

As energy costs rise and energy efficiency becomes more important in operating pumping systems, equipment suppliers, system designers and operators will maximize the efficiency of system components to...

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...

The Gulf of Mexico (GOM) is one of the prime areas for the production of crude oil worldwide. The number of platforms is continuously increasing, and major oil and gas discoveries continue with...

An OEM and an end user had installed a number of large, double-suction pumps for a water pumping station project (Figure 1). Soon after, they began to suspect that the pumps were a significant...

When choosing a rental pump, ask yourself the following question: Would you have a general practitioner perform your open-heart surgery? Hopefully, your answer would be no. While there is a place and...

Electric Submersible Pump Technology Most producing oil fields utilize an electrically driven downhole pumping system to bring oil to the surface. The pump typically comprises several staged...

Pumps & Systems, May 2008In trench-type wet wells, the pump intakes are placed near the bottom of a deep, narrow trench coaxial with the inlet pipe but considerably below it (see Figure 1). The...

Some may question if this is an appropriate topic for a pump magazine. While I do admit that I am a staunch conservative, this column is not about the political left. Instead, it addresses a very...

Modifications can be made to many older pumps to improve on their original design. Pump rebuilders with experienced engineering staffs can provide these modifications and upgrades to substantially...

Pumps & Systems, May 2007 How to Talk to Managers Most financial decisions of any consequence at your facility are made by managers; Plant Managers, Project Managers, Operations Managers,...

Click here for "Focus on Fundamentals" Part One, Part Three, Part Four and Part Five. In the April issue, we discussed fundamentals of the overhung impeller centrifugal pump design. Its advantages...

A few years ago, Corbin Spitzer from Spitzer Associates (Houston, Texas) correctly challenged a view in my article "10 Steps to Proper Alignment" (Pumping Prescriptions, October 2005). Spitzer...

One of the advantages of centrifugal pumps over positive displacement pumps is an ability to operate with a wide flow range. Since a centrifugal pump operates at the intersection of a pump curve and a...