Axial Fans – UMAF or Variax models
Axial fans are the preferred technology where large volumes of air are required, and are ideal for tunnel ventilation using transverse or semi-transverse techniques.
Flows of up to 400 m3/s and pressure rise of up to 30,000Pa or higher if required using 2-stage
Fans set to operate uni-directional or fully reversible
Flow control is enabled by blade adjustment either at standstill or during operation depending on model selected and also achieved using a Variable Speed Drive (VSD)
Anti-stall option with Ivanov device
Fire testing to operate at 200ºC/1h or up to 400ºC/2h (DIN EN 12101-3 or ISO 27927)