The Next Generation of Level Control
Water is an essential resource for everyday life, and thus having a way to store and distribute water is of critical importance.
Water storage tanks have been designed to compensate for varying water demands during high and low peak periods, as well as for firefighting, power outages and other emergency demands. There are many ways to store water in a distribution system, but what it all boils down to is the importance of the control system that ensures water storage is done right.
It’s common practice to use different forms of hydraulic altitude water control valves. These control valves use different hydraulic control pilots, depending on the application, to measure the tank levels and maintain or adjust the water storage levels.
The two key factors for water storage are to ensure the tank maintains the correct level and that there is water turnover. Water quality deteriorates with water age so stagnant water in tanks severely reduces the quality of the water. Water quality deterioration can give rise to various health risks. Poor water storage can have both chemical and biological impacts, such as disinfectant decay, microbial growth, tank corrosion, chemical contaminants, nitrification, pathogen contamination and sediment buildup.
Although less common, another issue is that in colder climates low tank turnover can lead to water freezing inside the tank. Water in motion due to tank turnover is far less likely to freeze. Freezing can cause the altitude water control valve to lose the capabilities to sense a full tank and therefore can cause the storage tank to overflow. Freezing can also cause structural concerns internally as well as externally with ice pressure expansion on rivets and on bolted or welded seams.
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