Pumps & Systems, March 2007Many pipeline systems throughout the U.S. are in need of maintenance, but this maintenance is often pushed back because there is no way to properly shut down the system....
Pumps & Systems, March 2007 Have you ever wondered why a motor manufacturer would state that many of their 60-Hz motors will operate on 50-Hz power as long as you reduce the nameplate voltage by...
Pumps & Systems, March 2007Q.What are the key requirements for good suction piping design for rotodynamic pumps?A.  Good suction piping design must eliminate air entrainment in the liquid,...
"How long will I be able to run my equipment before it has to be taken down for servicing?" is a question often asked when a buyer or user decides to purchase a new pump, agitator, or other type of...
A double-suction split case pump (18-in suction nozzle size), similar to the one shown in Figure 1, moves 8000-gpm at 400-ft head in a paper mill. Before reading further, stop to make a rough guess on...
Pumps & Systems, March 2007Identifying the source of vibration by following the amplitude: the case of a company that thought the problem was a pump impeller, but, in fact, the problem was over...
 Pumps & Systems, March 2007What's hot and what's not with pumps in the water/wastewater industry.Born in the 3rd century BC, pumps are one of the most important mechanical devices in all...
Pumps & Systems, March 2007 Vibration monitoring of rotating equipment and analysis of the resulting data are effective ways to evaluate the health of production machinery in order to achieve...
Pumps & Systems, March 2007 Industry analysts predict that in the near future, most motors will be controlled by variable frequency drives. Here are the reasons why.  VFDs offer energy...
By lifting wastewater to a higher elevation, pump stations are installed either in the gravity system or at the headworks of the wastewater treatment plant. Areas not suitable for gravity systems may...
This study establishes the relevant characteristics of sludge and how they affect the performance of pumps with a swept-back leading edge impeller and relief groove in the volute and head losses in...
Transporting large pre-fabricated modules to a remote, hostile and storm-ravaged environment is difficult and not without risk. For this reason, centrifugal pumps were chosen to play a key role in...
Born in the 3rd century BC, pumps are one of the most important mechanical devices in all industrial applications. Sustaining their importance in a mature market characterized by steady growth and...