Dampers: Electric and Manual

Ventilator dampers are made in a variety of types from butterfly dampers to louvers. Bradford Ventilation's butterfly single-disc and split-disc dampers have been designed to allow flexible and reliable means of air movement control.

Operations of a damper can be manual (by a hand cord) or electric (by a motor).

Bradford Ventilation's split-disc is an advantageous solution when height of the ventilator has to be taken into account. Bradford Ventilation's butterfly split-disc (or wings) swings downwards so it minimises the obstruction of the ventilator turbine top such as the Hurricane® and EcoPower® and the dampers are spring hold close but can be manually opened by tensioning a cord.

Butterfly split-disc dampers can also be electrically operated to open or close:

  • Split-disc manual cord operated damper – Bradford Ventilation Type 1 damper
  • Split-disc manual cord and cleat operated damper– Bradford Ventilation Type 2 damper
  • Split-disc electric damper – Bradford Ventilation Type 5 damper

The single-disc damper have less moving parts to minimise air leakage.

  • Single-disc electric Dampers: Bradford Ventilation Type 6 damper
   Single disc 
 Divide disc 
 Manual cord 
 -  Type 1 
 Manual cord and cleat 
 -  Type 2
 Type 6
 Type 5

Damper is a ventilator accessory that can be used in applications such as smoke or fire release, cold climate zones or when control of air supply is required.

Note: The dampers are designed so they are not tightly sealed to which it creates a partial vacuum around the base, as it will increase the risk of water entry due to the vacuum.

Product Suitability

Always check product suitability and limitations of use prior to selection - refer to the Product Technical Statement (PTS) available online.
Contact our technical team
Specialist team:
(02) 8824 0444

Hurricane is designed and built to endure tough conditions and operating environments.