Design 47 Controllable Pitch Vane Axial Fan


Chicago's Design 47 Vane Axial Controllable Pitch Fans respond automatically to signal source based on changes in temperature, humidity, air flow, gas concentration and air quality. While low initial cost, simple installation and operation make the Design 47 the best choice for variable air volume systems, they are also used in industrial applications to maintain constant environmental conditions regardless of air demand.

Operating range

Maximum CFM 250,000
Maximum Static Pressure 15" wg
Maximum Temperature 150 degree Celcius
Fan Sizes 16-1/2" to 81-1/8"


  • Vary volume and pressure by manually resetting blade angle
  • Stable air flow over entire performance range
  • Compact direct drive configuration
  • Horizontal or vertical installation
  • High Efficiency airfoil bladed wheel
  • Efficiencies over 80%
  • Rugged industrial strength construction
  • AMCA Certified for air and sound performance


  • Streamlined spun inlet bells
  • Wire guard screens
  • Horizontal mounting lugs
  • Companion angle rings
  • Spool piece
  • Vibration monitor switch
  • Inlet or outlet cones
  • Mounting feet
  • Vertical mounting lugs
  • Access door in cone
  • Casing extension

Alternate Products

Similar Products Design 47 Adjustable Pitch Vane Axial


Bulletin (2.62 MB)Manual (254 KB)