


AFT Series
Comet Fans AFT Fan Series for Industry
AFT series fans are designed to ensure efficiency and reliability in ventilation systems used in heavy industrial processes, such as steel plants, cement plants and extraction facilities. Speed and performance adjustment enables adaptation to the different operating conditions typical of demanding, high-dust-concentration environments.
MAP and AVP impellers ensure high efficiency and low noise levels, while the robust structure withstands high temperatures, humid atmospheres and aggressive environments typical of these sectors.
Available in numerous configurations and anti-corrosion materials, AFT fans are designed according to established criteria. The versatility of the blades, from 3 to 12 per impeller, makes it possible to achieve the ideal solution for every heavy industrial application. They are suitable for high flow rates and medium-low pressures, with a range of diameters from 800mm to 5000mm. They are used in particular when direct coupling between impeller and motor is not possible.
The three available configurations are AFTE (external motor), AFTS (vertical shaft, motor suspended below the casing) and AFTN (internal motor), allowing horizontal or vertical installations depending on the space and airflow paths typical of the ship’s layout.
Low-noise aerofoil-profile impellers feature variable pitch: adjustable while stationary (MAP) or while running (AVP). The materials (aluminium alloy, FRP, PP, PA) and balancing in accordance with ISO 1940/ISO 14694 ensure performance and vibration levels suitable for marine use.
The fabrications are all made of electro-welded steel sheet (ASME XI and/or ISO 3834-2), manufactured in sections for the larger diameters. Conical or elliptical inlet cones are available on request.
The standard finish is hot-dip galvanising, to ensure the best resistance in industrial environments (painting available on request).
Three-phase AC or DC motors are compliant with the EN/IEC 60034 family; versions for classified areas (ATEX/IECEx: EN 14986, IEC 60079-14) are available on request.
Testing and Performance Requirements:
- Aerodynamic tests to ISO 5801 / AMCA 210
- Vibration levels to ISO 14694, noise levels to ISO 13347;
Marine sector qualification options are available within the range.
- Cooling of furnaces in steel plants.
- Ventilation and extraction of fumes and gases in steelmaking processes.
- Cooling and degassing of bulky or expanded materials in the steel industry.
- Fans for steel extrusion and rolling lines.
- Extraction and filtration in cement plants.
- Cooling of clinker kilns in cement production.
- Ventilation in mines and material extraction plants.
- Drying and ventilation systems in asphalt kilns and plants.
- Dust transport and extraction in demanding industrial environments.
- AFTE 800 ÷ 2240 Axial with belt drive 0.55 ÷ 45
- AFTS 2000 ÷ 4800 Axial with belt drive 5.5 ÷ 90
- AFTN 1600 ÷ 2240 Axial with belt drive 5.5 ÷ 55




