Transverse Ventilation

Axial fans AXC and AXR

  • Unidirectional (AXC) or truly reversible (AXR)
  • Diameters from 1.400 to 2.400 mm
  • Volume flows up to 120 m³/s and 5.000 Pa of pressure using contra-rotating fans in series
  • Up to 400°C for 2h operation
  • Certified according to EN 12101-3

Sound attenuators

  • Cylindrical silencers with or without acoustic pod directly connected to the fan
  • Limited acoustic attenuation and low pressure losses 
  • Should the system require higher attenuations a splitter silencer can be sized, the splitters can be fix or moveable types on special rails in order to allow the possibility of easy cleaning
  • Aerodynamic nose of the splitters (on request) to reduce the pressure losses even more
  • Acoustic material fire resistance classified ClassA1 in accordance to ISO EN 13501-1
  • Standard finish in neoprene tissue or expanded metal sheet
  • Structure material can be pre-galvanized, hot dip galvanized or stainless steel


  • Multi leaf dampers with parallel or opposite blades specially designed for underground applications
  • Made of hot dip galvanized steel after manufacture or in stainless steel AISI 304L/316L equivalent to EN 1.4301/1.4404
  • Air leakage less than 0.1 m³/sm² at 1kPa
  • Blade deflection less than L/180 at 6 kPa
  • Operational cycling (open-close) up to 6 million cycling
  • Actuators pneumatic, electro-pneumatic, spring return, on/off, modulating
  • Supply 230 or 400 V, 50 or 60 Hz, 1 or 3 ph
  • The entire damper including motor can operate with hot air or smoke up to 400°C for 2 h certified in accordance to CETU/PIARC.

    Supply grilles

    • Wide range of supply grilles made of aluminium or stainless steel AISI304/316 equivalent to EN1.4301/1.4404
    • Heavy construction suitable for underground applications 
    • Control dampers to set up the volume flow through the grilles
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