Constant Volume Damper

Constant volume dampers or CVDs are circular self-powered controllers which manage the flow of air within ducting systems, by increasing or decreasing the air volume. With dual blades set into a galvanised steel casing CVDs start with a 100mm diameter and go up to a maximum of 315mm, an external scale can be set effortlessly – without the use of tools, so that the volume of airflow can be regulated.