T308-2B · T308-2L · T308-2D · T308-7
T308 Volume Control Damper
Manual, sealed and motorised multi-blade dampers with matched actuators.
The T308 family covers balancing and isolation duties: hand-lock quadrant control, airtight sealed blades, and motorised versions that accept BMS analogue signals. Circular single-blade and rectangular multi-blade forms are both available, along with check valves, relief dampers and constant-airflow valves.
Specification
| Forms | Rectangular multi-blade · circular single blade / multi-blade |
|---|---|
| Control | Manual hand quadrant · sealed manual · electric actuator (0–10 V) |
| Material | Galvanised steel, stainless steel or painted steel |
| Sealing | High-temperature gasket on sealed variants |
| Related | T303 check valves · YF relief damper · CAV constant airflow · T301-5 starter |
Design notes
- Balanced bladesBlades move in opposition so airflow distribution stays even across the face.
- Airtight optionGasketed blades hold leakage down on critical extract runs.
- BMS readyElectric actuators accept 0–10 V or 24 V floating control.
Options
- Electric actuator
- End switches
- Stainless body
- Insulated casing
- Access door
Applications
- Air balancing
- Zone isolation
- Laboratory extract
- Kitchen exhaust
