Rooftop fan EVT series

axialexhaustfor chemical applications

Use: the exhaust asial towers are suitable for the suctin of vitiated air flue gases and vapour from the environment.They are very useful during the summer season in those environments where air changes are necessary in order to keep the room ventilated. They are also used for the aeration of workshops, founderies, cement factories, tanneries, joineries, and for chemical mechanical and metallurgical industries where big air volumes have to be sucked at low pressure. Minimum working temperature - 20 °C, maximum + 60 °C. CONSTRUCTION FEATURES Tower. The outside structures is of pressed steel sheet with double perforate flange for anchorage on the roof or at the end of a pipe, complete with bracket for placing the driving motor. Diecast helical rotor in lighy alloy (spark-proof) with ring countour blades dynamically balanced, assembled caantilevered on the driving shaft. The rotor’s blade angle is adjustable when the fan is stopped for the types from 710 to 1000. Rain shielding roof which can be disassembled, made of fiberglass-reinforced plastic (polyester resin). The air direction is from the motor to the rotor, (it is always prossible to invert the airflow, i.e. from the rotor to the motor, by inverting the rotation of the motor, by disassembling the rotor and reassembling it overturned). Special executions on request. Painting of the outside structure with acid and rust-proof paint. Spark-proof unit with explosion-proof motor. Accessories on request. Anchorage base. Automatic opening shutters with the passing of the airflow.