Pressure relief dampers manufactured from extruded aluminium, type HD. Designed for surface mounting. These dampers have adjustable blades, which open by air pressure.
Application
As an overpressure grille or non-return valve to prevent unwanted reversed airflow. (Air-conditioning installations) The slats automatically shut down when stopped.
Standard
- satin anodised.
- fixing holes.
- Foam rubber inlay strip gives a precise fit to the wall.
- Louvres balanced to give good air flow at appropriate pressure level.
- included fasteners and plugs.
- Rubber inlay on Louvre.
Options
- Different sizes, see SG120
- powder coating in RAL color.
- Set in Type, see SG123.
- Reverse airflow, see SG123.
- Coupled slats, see SG123.
Technical details
| Article number | : | 12HD-4646AA |
| Specification | : | anodised |
| Dimension | : | 455 x 455 mm |
| EAN code | : | 8713628017818 |
| Box Qty | : | 1 |
| LD cm2 | : | 1560 |
| Pressure drop | 1 Pa | 2 Pa | 5 Pa | 10 Pa | 20 Pa | 40 Pa | 60 Pa |
| dm3/s | 123 | 174 | 275 | 389 | 550 | 778 | 953 |
| m3/u | 443 | 626 | 990 | 1400 | 1980 | 2801 | 3431 |
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