The DVA (Variable Air Volume) units are designed for regulating the air flow at a fixed or within set maximum and minimum limits. They are used for supply and extract systems.
DVA type units (variable air volume); flow control damper, damper motor and dynamic type sensor with variable or fixed air flow regulator. The units are delivered with calibrations to work on the desired conditions. The air flow regulating units are divided into two groups as with heat-insulated or without heat-insulated.