Infrastructure projects
Wolter infrastructure projects
Tunnels, metro, airports and underground car parks: since 1972, Wolter has supplied ventilation equipment and smoke-exhaust fans to infrastructure projects worldwide.
Experience across a variety of industries
Since 1972, Wolter has supplied ventilation equipment to infrastructure projects:
- Wind power generation
- Airports
- Underground car parks
- Offshore installations
- Road tunnels
- Railway, metro and mass transit: tunnels, stations and platforms
- Rolling stock

International presence
A network of more than 20 subsidiaries and agents around the globe keeps Wolter within reach at every stage of a project, from design to after-sales service.
- Wolter UK Ltd
- Wolter Asia Ltd / Hong Kong
- Wolter Ventilators India Pvt. Ltd
- Wolter Pte. Ltd / Singapore
- Wolter Ventilation Co., Ltd / Thailand
Wolter main offices and production facilities: Malsch and Waldmünchen, Germany.


Tunnel ventilation products
Wolter offers specially designed fans for longitudinal and transverse tunnel ventilation, certified up to temperature class F400 to DIN EN 12101-3, with ancillaries such as dampers and silencers. They withstand highly corrosive and abrasive tunnel atmospheres and work reliably in normal and emergency operation.



CFD analysis
Wolter provides design analyses of CO and smoke ventilation concepts for underground car parks and tunnels based on Computational Fluid Dynamics (CFD) modelling.




Notable tunnel projects
- VadlaheidiIceland · road · 2019
18 × AXV 1000, reversible, 300 °C / 120 min
- B297 Underpass NeckartailfingenGermany · road · 2019
3 × AXV 560, reversible
- BorikSlovakia · road · 2018
18 × AXV 1000, reversible, 300 °C / 120 min
- Бескидський тунель / BeskydUkraine · railway · 2018
4 × AXV 560, reversible, 400 °C / 120 min
- Dubai International Financial CenterDubai, UAE · truck tunnel · 2018
10 × AXV 630, reversible, 400 °C / 120 min
- Salim Salam City TunnelBeirut, Lebanon · road, refurbishment · 2017
16 × AXV 1250, reversible, 300 °C / 2 h
- Hong Kong–Zhuhai–Macau Bridge TunnelHong Kong – Zhuhai – Macau · road · 2015
22 × AXV 1000, reversible, 300 °C / 120 min
- Dubai International AirportDubai, UAE · road · 2014
9 × AXV 1000, reversible, 300 °C / 120 min
- RheinuferstrasseDüsseldorf, Germany · road · 2013
AXV 630, reversible, 300 °C / 120 min
- Hong Kong Eastern Harbour TunnelHong Kong · road · 2013
Replacement axial fan impeller, 2,800 mm diameter
- WisłostradaWarsaw, Poland · road · 2002 / 2012
32 × AXV 800 tunnel jet fans F400 for new construction in 2002 and 36 × AXV 800 tunnel jet fans F400 in 2012 as a precautionary exchange after an actual fire (the replaced fans were all still operational)
- Genting SempahMalaysia · road · 2011
26 tunnel jet fans
- Waidhofen/YbbsAustria · road · 2011
14 × RXV 710 F400, 6 × AXV 500, 3 × AXV 450 with dampers
- LetnáPrague, Czech Republic · road · 2011
2 × AXV 900, reversible, 300 °C / 120 min
- Education City South Site Utility TunnelDoha, Qatar · utility tunnel · 2010
60 × AXV 1120 F300, 59 × AXV 1000 F300, 2 × AXV 1250, 300 °C / 120 min
- Khon Kaen UnderpassThailand · road · 2010
10 tunnel jet fans
- SVH Harter PlateauLinz, Austria · light railway tunnel · 2010
12 × AXV 630, reversible, 400 °C / 120 min; 4 × AXV 500 and 2 × AXV 450 with dampers
- Lanxess Arena TunnelCologne, Germany · road · 2002 / 2010
12 tunnel jet fans in 2002, refurbishment in 2010
- Taipei MRT CL 305Taiwan · metro / MRT · 2008
200 axial tunnel ventilation fans
- International Financial CenterDubai, UAE · service tunnel · 2007–2008
28 tunnel jet fans 630 F300, 7 × AXV 1120 F300, master-drive cabinet, aerodynamic components (guide vanes)






















Metro: comfort ventilation in Hong Kong’s MRT
Wolter has delivered approximately 600 ventilation units to Hong Kong’s MRT, providing comfort ventilation on platforms and in pedestrian tunnels throughout the subway system.





Components for rolling stock
Apart from ventilation products for building infrastructure, Wolter also supplies components to rolling-stock manufacturers and operators.
- Wolter fans replace existing units on condensers atop MTRC metro carriages (Hong Kong).
- Motorised dampers are delivered regularly to the Swiss Federal Railways (SBB).


Notable airport projects
- Casablanca AirportMorocco · 2020
Smoke-extraction fans in acoustic cabinets
- Manchester Airport Transformation ProgrammeUnited Kingdom · 2019
21 smoke-extraction fans, sizes 1000 and 1400
- Heathrow Terminal 2ALondon, United Kingdom · 2012
28 smoke-extraction fans size 1000 (20 two-stage units), 27 high-temperature jet fans, cabinet fans sizes 710–800
- Ashgabat AirportAshgabat, Turkmenistan · 2014–2015
8 smoke-extraction fans F400, sizes 560–630; miscellaneous axial fans
- Dubai International Airport, Phase IIIDubai, UAE · 2014
74 smoke-extraction fans from size 500 to 1400 (31 × 1000, 25 × 1250, 6 × 1400, 12 × 500–900), other fans and accessories
- Cairo Airport Terminal B2Cairo, Egypt · 2014
98 high-temperature jet fans
- Madinah AirportMadinah, Saudi Arabia · 2014
21 ventilation fans, sizes 1120 and 1250
- Queen Alia International AirportAmman, Jordan · 2012
- Sabiha Gökçen AirportIstanbul, Turkey · 2008–2009
36 smoke-extraction fans sizes 900 and 1000, 10 smoke-extraction fans size 630, 132 high-temperature jet fans
- Turkmenbashi AirportTurkmenbashi, Turkmenistan · 2009
18 smoke-extraction fans size 1000; axial, roof and duct fans
- Frankfurt Rhein-Main International AirportFrankfurt am Main, Germany
Various deliveries
- Chek Lap Kok AirportHong Kong
Based on the Wolter presentation “Infrastructure-related Projects” (photos: Wolter).