Pumps

Oct 24 2008
The design and selection of new pumping systems provides the opportunity for facilities to purchase systems optimized for minimum lifecycle costs....
Feb 4 2008
A California contractor recently won the bid to develop a residential development with more than 300 homes on a hillside north of Lake Elsinore,...
Nov 2 2006
One of the fastest-growing types of positive displacement pumps on the market is the peristaltic pump. Once used exclusively in the lab, this pump...
Apr 7 2006
Both diaphragm and peristaltic metering pumps (injectors) can provide years of dependable and efficient service. When deciding which to use, it is...
Jan 24 2006
What are the implications of pumps operating “to the left” of the best efficiency point (BEP)? Low efficiency, high radial loads, noise, vibration...
Dec 21 2005
In Dunn Center, N.D., the maintenance, streets and water departments are called Leo. No, that’s not an acronym; it’s the first name of the man who...
Nov 1 2005
Maximizing the life of your pump [and system] is achieved by considering three basic pumping system elements: selection, installation and...
Jan 5 2005
Although pumps date back to the ancient Greeks (100 BC)—powered by both animals and humans—they are still a bit misunderstood, particularly chemical...
Jun 30 2004
The water requirements for industrial applications are high. Therefore, water must be “reprocessed” or otherwise provided with extended treatment to...
Mar 11 2004
Introduction Millions of tax dollars are being spent to treat water to ensure it is safe for human consumption. Millions more are being spent to...
Aug 18 2003
Reverse osmosis (RO) has become a significant process used in the purification of water. Selecting the correct pump is a significant step in a well-...
Jul 2 2003
Costly, time-consuming and persistent maintenance problems, coupled with unacceptable odor levels, prompted a major southwest wastewater treatment...
Jul 2 2003
The Cupertino Sanitary District (CSD) recently underwent significant equipment upgrades at its lift stations, as well as benefiting from a number of...
May 1 2003
Maintenance Guidelines, Machinery Reliability Programs 1. Oil level check 3. Shaft to bearing housing face...
Apr 22 2003
Sealing Methods What is L3/D4 (L cubed over D to the fourth)? It is a measure of pump rotor stiffness, its ability to resist radial load and to...
Apr 22 2003
Why is stainless steel so good against cavitation? If it were soft, wouldn't the imploding bubbles erode the material away in no time? The reason for...
Apr 22 2003
One of the claimed advantages of centrifugal pumps over positive displacement pumps is their ability to operate over a wide range of flow. Since a...
Apr 22 2003
A "stable" curve is very important for a pump operation, especially for pumps operating in parallel. The higher the energy level and the more...
Apr 22 2003
In a process plant industry, the reliability and effective availability of equipment are the prime requirements to having high productivity and for...