The Pumps & Systems on Tour project continues at KSB in Frankenthal, Germany on June 5, 2013.
Pump Design for Reduced Costs & Efficiency
A 3-D inverse design method provides better cavitation control and reduces manufacturing costs.
Molding & Resin Improve Wear Resistance
A composite bulk molding compound prevents wear and downtime.
 Powerful Mine Dewatering
Electric and diesel centrifugal pump options
Characteristics of Centrifugal Pumps
Head, performance curve and affinity laws all contribute to the efficiency of centrifugal pumps.
Dewatering Simplified
Versatile options are available for every application.
Pump System Efficiency
Focus on efficiency drives savings in energy consumption.
OLATHE, Kan. (May 31, 2012) – Ingram’s Magazine, Kansas City’s long-form business publication, selected Grundfos to top its list of “Best Companies to Work for in Kansas City.” Grundfos was...
Near-Perfect New Centrifugal Pump Wear Rings and Bushings
New resin and Kevlar bulk molding compound adds strength to pump wear partsFor years, the pump industry has had problems with centrifugal pumps. The continual wear of rings and bushings has been an...
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...
 HAMPTON, Va. (Feb. 2, 2012) - Ruhrpumpen, a pump technology company, opens new Service Center Facility in Hampton, Va. This new Ruhrpumpen facility adds one more full-service location to its...
The DEF Market
The diesel exhaust fluid market creates opportunities for pump manufacturers.Growth and innovation in industrial pump design and operation are often driven by outside forces. A common force is the...
The Function of the Volute
Misunderstood pump element serves to minimize mixing lossIt is a common misconception in the U.S. pump industry that the function of the volute is that of a diffuser: to convert velocity into...
Centrifugal Pump Specific Speed
Specific speed is a concept developed for water turbines in 1915, which was later applied to centrifugal pumps (Stepanoff, 1948). Specific speed is a way to “normalize” the performance of these...
Predicting Centrifugal Pump Performance
It is said that old pump men never die—they just lose their prime—and I fear that is partially true. Therefore, before I lose my prime, I thought I'd share some equations with some of you younger...
1)  Only select pumps with suction specific speeds less than 11,000-less than 9,000 is even better.2)  Select your pump so it never operates below 70 percent to 80 percent of its best...
 Cost Reductions Through Life Cycle Improvements
More than 15 years ago, a 160 in plate mill was experiencing significant maintenance problems with its descaling pumps; the typical mean time between repairs was only 6 to 8 months. Some rebuilt pumps...
As the global demand for energy grows, power companies are working to implement new technologies that would enable them to produce more power from existing stations. The following example demonstrates...
Home to the largest contiguous cotton-growing region in the world and encompassing more than 115 square miles, Lubbock is the economic, education and health care hub of the South Plains of Texas. With...
InnovationIntroduced to the market on June 8, 2009, the Multi-Stage CR-H provides a retrofit option for industrial users of traditional ANSI pumps. The CR-H can be used in a wide range of clean fluid...
In the Solution to Pump Challenge #3, we touched on efficiency and energy savings by approximating energy costs. Can we do this more precisely?Pump Challenge #4 asks that you evaluate energy saved...
Several years ago, a golf course community wanted to adorn its entrance with a waterfall. Rocks were arranged to form a wall about 12 ft high, and the water would flow over the wall and into a...
Repairing multistage, segmental diffuser, boiler feed pumps and maintaining the original performance can be difficult and challenging. In this case study, a comprehensive inspection and repair program...
 Solution to Pump Challenge #2: Moving a Pump from the Bottom of a Dry Pit
In the August 2009 issue, we considered the following challenge: From the available data tables, the vapor pressure of 150 deg F water is about 4 psia, or (x 2.31) = 9 psia.Initially, when the...
In Pump Challenge #3 (Pumping Prescriptions, September 2009), the specified parameters for energy estimation were 4,000 gpm and 400 ft. Using the Energy Estimator tool, you should receive the...
In Pump Challenge #4, many of you discovered while using the Energy Consumption Evaluator, that the standard listing only goes to 8x6-17 pump size with motor power maxed at 250 hp, which is below...
Many publications discuss the causes and cures of cavitation, but few address the reason those bubbles are so destructive. Boiling is the precursor to cavitation in a centrifugal pump. Boiling is not...
A “Solid” Solution to Pump Selection
 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...
Acceleration Head
The Thirteenth in a SeriesIf a centrifugal pump is started with the discharge valve open too far and with a low discharge pressure, the liquid in the suction line may accelerate at a rate that causes...