In compound systems, pumps can be linked in series or in parallel. In serial operation the heads of the pumps are added and in parallel operation the flow rates of the pumps are added. The tentative unit provides the fortitude of the characteristic behavior for single operation and interface of two pumps. The flow and pressure values displayed at the LCD. The flow can be changed by using manual operated valves. Series and parallel of pump changed by the combination of open close position of different valves present in the path of pumps. Flow visualization using prepared CFD simulations, Digital multimedia teaching material online in the Media Center: E Learning course, prepared CFD. There are three other different options in this apparatus: 1. Variable speed of the pumps. 2. Transparent head of the pumps. 3. Pumps with both variable speed and transparent head.