Centrifugal Fans CNA-CNB EX

The CNA-CNB EX are low-pressure centrifugal flow fans for operation in non-corrosive environments. The fans are suited for transport of air containing flammable gases. The design is for universal installation in light industrial plants or process industry.

Product facts


  • For flange connection
  • Impeller diameters
    CNA: 9 sizes from Ø250 to Ø1000 mm
    CNB: 7 sizes from Ø400 to Ø1000 mm
  • Airflow rates
    CNA: 0.2 to 14 m3/s (720 to 50400 m3/h)
    CNB: 0.8 to 18 m3/s (2880 to 64800 m3/h)
  • Pressures
    CNA: Up to 1000 Pa
    CNB: Up to 1500 Pa
  • Direct coupled or belt-driven versions
  • Backward-curved blades
  • Low sound level
  • Can be mounted in any position
  • Housing and impeller of hot-dip galvanised sheet steel
  • Inlet cone of brass
  • Corrosion category C2 according to DS/EN ISO 12944-2
  • Classifications
    EX: Non-sparking fans according to guideline IACS F29/2005
  • Accessories for mounting, connection, safety and regulation
  • Product configuration with AirBox™


Related Solutions

Get updates on innovative fan technology with our newsletter


NOVENCO Building & Industry
Oeverup Erhvervsvej 50-52
4700 Naestved

Tel. +45 70 77 88 99
DK 16 92 66 47