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Article 7
In November 2012, a valve was opened at the Chippawa end of the Niagara Tunnel Project, the third hydro tunnel under the city of Niagara Falls. That one valve, which allowed water to flow into an...
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Article 6
To pinpoint leak location and isolate areas of a pipeline for leak repair, utilities managers need to know valve locations, how valves operate and the condition of those valves. This article looks at...
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Article 5
While the Canadian winter sees a sizeable portion of the population scurrying to points south, those bone-chilling temperatures left behind will eventually provide relief in Toronto during the humid,...
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Article 4
America is the largest consumer of energy in the world—energy production is pivotal to the economy, balance of trade, deficits and domestic stability. That’s why new oil and gas well completion...
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Article 3
Giant livestock farms, which can house thousands of pigs, chickens or cows, produce vast amounts of manure—they can generate the waste equivalent of a small city. The problem of what do with this waste...
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Article 2
Anyone who plans, builds or operates water distribution systems attachs great importance to efficiency as well as the reliability of system components. Today’s pipes, valves and taps have been...
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Article 1
During the 1990s, it was popular for municipalities around the world to enter into agreements with private contractors for water and wastewater treatment plants and services. The trend has slowed and...
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Article 0
The Foss Reservoir Master Conservancy District (FRMCD) in southwestern Oklahoma is part of the 8,800-acre Foss Reservoir/Foss Lake. The treatment plant, which is located adjacent to the Foss Dam, pumps...
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Actuators and controls are a critical process of how we move water through our supply and waste systems.
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To better understand the actuators and controls in our water systems, we discussed the types and some of the considerations for sizing in the first part of this article, which appeared in the print...
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Air valves are hydromechanical devices designed to automatically release air and wastewater gases or admit air during the filling, draining or operation of liquid piping systems for water and...
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Wastewater systems present many challenges to pumps and valves because the flow can contain grit, solids and debris, depending where in the process the equipment is located. That’s why the eccentric...
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Editor's Note: This article is an excerpt from Cylinder and Vane Actuators and Control—Design and Installation, published by the American Water Works Association in 2015. Part I of this article is an...
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After decades of confusion, the American Water Works Association (AWWA) has created new standards for actuator sizing that clear up some of the confusion and also provide guidance on where safety...
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The history and general application of elastomers in pipes, valves and fittings is the subject of the recently published Manual of Practice developed by the American Water Works Association (AWWA).
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