Pumps

Pumping is essential to W&WD's coverage, with two special sections per year devoted to moving water. Seventy-three percent of W&WD's readership has the authority to specify, approve or buy pumps, valves, seals and packing. Read on for the latest news and trends in pumps.

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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…
Apr 22 2003
A shielded, grease-lubricated ball bearing can be compared to a centrifugal pump having the ball-and-cage assembly as its impeller and the annulus…
Apr 8 2003
1 Read the Installation, Operation and Maintenance Manual for your pump before installing, operating or performing maintenance on the pump or its…
Manganese greensand is a specially processed medium for iron, manganese, and hydrogen sulphide removal
Manganese greensand is a specially processed medium for iron, manganese, and hydrogen sulphide removal.
Mar 13 2003
Manganese greensand is a specially processed medium for iron, manganese, and hydrogen sulphide removal. This premium non-proprietary filter medium is…
Mar 11 2003
Let's face it, as good as water softener valves have become, certain factors can affect their performance. There also are many older units out there…
Mar 6 2003
The picture of a burning building or house usually brings to mind teams of brave men working in unison to put it out. However, fire departments are a…
Feb 21 2003
Pumping around the clock at 10,000 gpm, two 94hp submersible, portable dewatering pumps manufactured by Pumpex, Inc. of Somerville, N.J., drained…
Feb 4 2003
Some engineering firms still harbor the misconception that prefabricated systems are too small to handle the enormous volumes of water that…
Smoke testing can be performed to determine the sources of excess inflow
Smoke testing can be performed to determine the sources of excess inflow.
Nov 13 2002
Although video inspection and other techniques certainly are important components of an I&I survey, research has shown that approximately 65% of…
Aug 20 2002
Some of the best processes are the ones that go unnoticed. For example, if you go looking for a particular sewage treatment plant in Cincinnati, Ohio…
Jun 28 2002
Monterey Regional Water Pollution Control Agency (MRWPCA) has installed a new type of pump featuring a unique, self-cleaning impeller to overcome…
Jun 28 2002
PROJECT DESCRIPTION: To transfer stormwater from a creek to an adjacent river during periods of high water during storms and spring thawing. The…
May 21 2002
For more than 220 years people have journeyed to White Sulphur Springs, W. Va., to indulge themselves in baths of mineral water flowing from mountain…
Apr 9 2002
Jamaica is the third largest island in the Caribbean. It is 144 miles long and 49 miles wide, it is self-sufficient, with major industries based on…
Feb 26 2002
Production of High Purity Water From Seawater Joyce Robinson Normal Joyce Robinson 2 2002-02-25T20:42:00Z 2002-02-25T20:46:00Z 6 2117…
Feb 26 2002
In use today are three basic pump technologies for water disinfection. Each has advantages and disadvantages that need to be understood to pick the…
Dec 27 2001
The pumps at the Stony Brook Lift Station used to clog so often that crews for Suffolk County (N.Y.) Department of Public Works (SCDPW) anticipated…
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