Semi-transverse Ventilation

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

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.