Novair by Dab is a submerged aerator designed for the aeration of sewage in small purification plants. Further application possibilities can be found in the oxygenation of garden ponds and fish hatcheries. Thanks to its design, Novair guarantees excellent oxygenation of purification plants through the creation of a dense and large cloud of fine bubbles. The fluid-dynamic study mainly concerned the blade profiles of the impeller so that when it starts up it does not damage the microorganisms present in the liquid. Installation in vertical position, the body of the aerator is equipped with a support base. The cooling of the Novair motor is ensured by large contact surfaces between the motor casing and the liquid. The wiring of the power cable is resin-coated to guarantee operation even in the presence of humidity and possible infiltrations. Complete with gasket and 90° bend with tail for vertical entry.