MBD
Airdiff
Manual Balancing Damper
Ref: MBD
Galvanised steel opposed-blade damper for manual airflow balancing in low-to-medium-pressure duct systems.
Key Specifications
- Blade material
- Galvanised steel, 1.0 mm
- Frame material
- Galvanised steel, 1.2 mm
- Temperature range
- –20 °C to +80 °C
- Max velocity
- 12 m/s
- Leakage class
- Class 2 (EN 1751)
- Available sizes (round)
- Ø 100 – Ø 630 mm
Description
The MBD manual balancing damper features precision-formed opposed blades that provide a near-linear flow characteristic, enabling accurate airflow balancing across duct branches. Constructed from galvanised steel with stainless steel blade axles and nylon bearings, it delivers smooth, backlash-free adjustment. A lockable quadrant handle on the duct exterior allows the installer to set and secure the blade position after commissioning. Available in round and rectangular formats to suit all common duct sizes.
Features
- Opposed-blade design for linear control
- Galvanised steel construction
- Stainless steel axles, nylon bearings
- Lockable quadrant handle
- Available in round and rectangular
Applications
- Supply and return air balancing
- Branch duct regulation
- VAV zone trim
Technical Documents
Materials
Galvanised steelStainless steel axlesNylon bearings