DV3 to DV9


DV3 to DV9

performance range



Axial-flow impeller as cast part from EN AB 43000, with miniature blading on the outer ring. Turbine nozzle for compressed air drive. Thrust collar made of EN AB 43000, spark protected. With guide vanes, profiled rotor blades with no edges in the flow surface, sturdy steel housing, foot mounting.


Infinitely variable by regulation of the compressed air


  • Compressed air driven balanced pressure turbine at the impeller circumference
  • Operating pressure 4-6 bar


Primer with top coat, alkyd resin Silac,
total layer thickness min. 180 μm

Standard colour: Pure white (RAL9010)


Dust disks, special coating

Technical execution according to

Machinery Directive: EU Directive 2006 / 42 / EC
ErP ecodesign: Directive 2009 / 125 / EG
Test bench run based on DIN EN ISO 5801 / 2017

English Version of our Website ist coming soon …

What we do

Customer oriented and innovative solutions for the health of your employees

Ventilating and Exhausting Systems for:

  • Mining of any kind
  • Tunnel Construction
  • Road Construction
  • Underground Irrigation and Cavern Systems
  • Special Construction

Breathe the Difference

Our highly qualified expert team of engineers will not only continue to the longstanding tradition of the KORFMANN quality and performance in the field of ventilation for mining and tunneling, underground systems of any kind and industrial sectors, but also increase it to the advantage of your company.

Due to our high affinity for technology, we find the perfect solution for your requirements – no matter in which area. The innovative spirit of our engineers helps us to continuously develop our products and offer you solutions and products also related to industry 4.0.

You can be absolutely certain to have Korfmann Lufttechnik GmbH as a reliable partner at your side. We look forward to convincing you of our efficiency and ability to supply the best product for your future projects.