Tornado Natural Roof Ventilators



The Windmaster® Tornado Series of Roof Ventilators are South African designed and manufactured. This cost-effective and efficient ventilation system is ideal to ventilate factories, workshops, warehouses, agricultural applications, schools, hostels, change houses, assembly halls and other building structures which require effective ventilation. The positive extraction of the Tornado Turbine ventilators eliminate dust penetration and a down-draught into the building to ensure a cleaner and healthier working environment.

Dynamics of Product

The design of the Tornado enables the ventilator to be activated by natural convection from inside the building and also allows it to be assisted by the wind outside. Wind creates a flow of air through the throat of the Tornado to enhance extraction.

Users of Tornado Turbines continually report reduced stress and increased productivity due to a healthier working environment.

Benefits and Features
  • Positive extraction removes heat, fumes, steam and dust
  • Improves productivity
  • Improves indoor air quality
  • Water and bird proof
  • Reduces structural damage
  • 5 year guarantee
  • Can be colour coated
  • Adjustable pitch up to 45°
  • Dampers available for winter
  • Silent, clean and effective
  • Patented bearing system
Superiority of Product
  • Tested extraction capacity (Report available on request)
  • Comprehensive 5 year guarantee
  • 100% South African product
  • Top quality of manufacture
  • Superior internal design eliminates the necessity of external supporting braces
  • Larger rotating dome for increased extraction
  • Sealed bearings enclosed in a sealed bearing housing


SPECIFICATIONS
TORNADO
MODEL 300mm
Tornado
350mm
Tornado
500mm
Tornado
610mm
Tornado
Tested Air removing capacity at
• 15km/h windspeed
• 25km/h windspeed
m2 floor coverage per unit

1489 m3/h
2184 m3/h
38 m2

1863 m3/h
2731 m3/h
50 m2

4495 m3/h
5757 m3/h
120 m2

6807 m3/h
8512m3/h
180 m2
Sealed bearings in housing 2 2 2 2
No. of blades 20 21 32 40
Dome height 250mm 270mm 460mm 520mm
Dome width 435mm 470mm 730mm 880mm
Total height 460mm 500mm 700mm 900mm
Approximate mass:
• Galvanised Tornado
• Aluminium Tornado

6.3kg
3.8kg

7.6kg
4.7kg

15.9kg
10.4kg

24.6kg
15.2kg
Note: The air removing capacity figures shown have been calculated at an average roof height (heat stack) of five metres above working level. Average windspeed ±15km/h
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