AV28 is a powerful centrifugal ventilator / aspirator that have hydraulic and electric motors. It guarantees safety and the environment reclamation while working in areas that have a presence of fumes, steams, exhalations or toxic and explosive gasses. The design is versatile with flexible air hoses that can be installed rapidly on both the mouths. The stainless steel frame can be used in two different ways. The first is the NORMAL POSITION which can be used with or without hose. If used with a hose, the air can be given a particular direction in or from a precise point in ventilation or aspiration mode. The second position is BENT ON LATERAL POSITION. Here the tool ventilates directly downward inside manholes. Strong polypropilene, plastic material is used for the volute and the impeller. This makes it light and resistant to rust.