The suction tank is located below and in the center of the sump and has all connections for inlet/outlet, drain, filling and overflow. The unit is at the lowest point and is always flooded thus ensuring no cavitation on the pump suction. The suction tank is fully molded in FRP to prevent corrosion and subsequent leakages. A drain is provided to the tank which makes it quite simple to remove the accumulated dirt and to drain out the water (which simplifies the cleaning and maintenance of the Tower).