Back Draught Dampers

The BD Series Backdraught Damper is suitable for self-opening, light pressure relief or as a non-return valve.
The damper can be fitted to partitions or brick walls, on plenums or duct mounted for applications requiring coarse control of differential pressure.

Conforms to HVCA specification DW144 classes A and B and Eurovent as relevant. Independent performance tests for pressure drop. Test report 165 refers