Ventilation of Tunnels and Underground Railways

ZVVZ fans ensure diagonal and longitudinal ventilation of underground road tunnels, as well as underground railway tunnels.

More about ZVVZ Machinery

Diagonal ventilation fans – heat-resistant

Only standard sizes: 710 to 4,500 mm. Temperature of transported air mass ranging between -40 and +70°C.

  • standard sizes: 1,300 to 3,350 mm or according to the needs of a particular project
  • unidirectional (non-reversible) or fully reversible
  • standard transported air mass temperature between -20°C and +40°C
  • temperature certificate up to 400°C

JET FANS: Jet reversible fans for longitudinal ventilation – heat-resistant

Standard sizes: 2000 to 5000 mm or according to the needs of a particular project. Standard temperature of transported air mass ranging between -40 and +70°C.

  • fully reversible fans (when in reverse, they achieve roughly 95% flow in the main direction)
  • standard sizes: 500 to 1,600 mm or according to the needs of a particular project
  • standard transported air mass temperature between -20°C and +40°C
  • temperature certificate up to 300°C or up to 400°C according to parameters of the received Certificate of Constancy of Performance

Important references

Blanka Tunnel, Prague, Czech Republic

Axial Fans
APWR 630, 1000, 1250
APH 2500,2800,3150
Year of delivery 2012

Metro Prague,
Czech Republic

Axial Fans
APWR 1600 a 1760
APWM 1800 a 2000
Year of delivery 2013 a 2017
Anxial fans overhaul
APE 1800, APC 1800
Executed 2015-2018

Povážský Chlmec,
Slovakia

Axial Fans
APWT 1250
Year of delivery 2017