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The Design Of Potable Water Supply System For Institutional Setting
[A CASE STUDY OF KWARA STATE POLYTECHNIC PERMANENT SITE] -
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2.5.5 Drain Valve:
In the summits of mains, it is possible that some suspended impurities may settle down and cause obstruction to flow the water. In the distribution system at dead ends if water is not taken out it will stagnate and bacteria will be born in it (Mcggee, 1992). To avoid the above difficulties drain valves are provided at all such points.
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