In water distribution system for supplying there is very important to study the influence of the variation of the rotation pump flow in piping systems with respect forced flow and pressure, since the use of pumps is increasingly common sanitation systems. At the Federal University of Itajubá -UNIFEI there is a reduced model system that mimics a distribution system of water containing hydraulic elements such as pipes, suction pumps, valves and reservoir supply. In this study we evaluated these parameters on a series of conditions of rotation. In this system there are one inverter frequency ranging from 1750 rpm to 3500 rpm rotation. The results showed consistent up according to existing theories leading to hydraulic correlations

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