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the suction port has to be vapour free. To obtain this condition, the suction line has to be: ? As short as possible and well insulated. ? Pressure drop in the line should be as low as possible. ? Avoid sharp bends and gas traps . ? Dimension suction line for optimal liquid velocity. ? The pipe diameter should be selected and designed for flow with an average velocity of approx. 2m/sec.. ? If two pumps are connected to one tank outlet, the split of the line should be in ” Y “ shape. ? Branch valves to be as close as possible to the main line. ? No loads applied to the pump. INSTALLATION CENTRIFUGAL PUMP 8 Discharge line ? Diameter adequate