Dampers Electric and Manual

Ventilator dampers are made in a variety of types from butterfly dampers to louvers. Edmonds® butterfly single-disc and divide-disc dampers has been designed to allow flexible and reliable means of air movement control.

A special tight seal is obtained through the use of a damper ring, which can minimise the passage of air when the damper is closed.

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

Edmonds® butterfly divide-disc is an advantageous solution when height of the ventilator has to be taken into account. Edmonds® butterfly center-divide (or wings) swings downwards so it minimise 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 chord. Edmonds® butterfly center-divide dampers can also be electrically operated to open or close:

  • Divide-disc manual chord operated damper – Edmonds Type 1 damper
  • Divide-disc manual chord and cleat operated damper– Edmonds Type 2 damper
  • Divide-disc electric damper – Edmonds Type 5 damper

The benefit of the single-disc butter damper seats tightly against the ring channel, minimise air leakage when closed. When operated by hand chain, Edmonds’ single disc dampers are spring hold to close but can be manually opened by tensioning a chord.

  • Single-disc electric Dampers: Edmonds Type 6 damper
Single disc Divide disc
Manual chord - Type 1
Manual chord and cleat - Type 2
Electric 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.



2 year limited warranty.