Allows air to travel only in one direction. Aluminium construction gives corrosion resistance
Back draught shutters are used wherever a single direction of airflow needs to be maintained, for example with an AHU exhaust. With frames and blades made from extruded aluminium, and bushes and blade axles from nylon, Air Precision Series BDS units are lightweight and exceptionally corrosion resistant, for long life and minimal maintenance.
The optional high temperature specification enables Air Precision VCDs to be used in environments reaching up to 300°C. Brass bushes and link arms replace the standard nylon fittings
Linked and weighted blades:
The damper would be supplied with linked blades and a weights kit. This enables personnel on site to increase the air pressure at which the damper opens.