Volume Control

Back Draft Damper – Medium Duty

The Holyoake BDE-100 is a medium duty back draft or non-return damper. Constructed from extruded aluminium and stainless steel components, a single blade seal and side seal, it is capable of handling high velocities of turbulent air and provides minimal leakage when closed against reverse flow.

  • Medium duty robust blades.
  • Aluminium and stainless steel construction.
  • Vertical or horizontal mounting.
  • Twin blade edge seals.
  • Aluminium blade side seal.
  • Linked blades to avoid flutter.
  • Gravity operation.
  • Tension springs and weights can be used to provide adjustable airflow resistance.
  • High temperature blade seals (225°C) are available as an option.