Aldes OCTA D450 + Joint Acoustic Silencer
Product Overview
The Aldes OCTA D450 + Joint is a circular acoustic silencer designed to significantly reduce the propagation of acoustic noise, particularly in the medium frequency range, within circular ventilation networks. It offers high performance in sound attenuation while maintaining a very low leakage rate, achieving Class D for airtightness according to EN 12237.
This product is ideal for ensuring acoustic comfort in tertiary and collective residential buildings. The range covers diameters from Ø 125 mm to Ø 1000 mm.
Key Features and Benefits:
- High acoustic attenuation performance.
- Energy efficiency due to low pressure losses.
- Energy efficiency due to very low leakage rate (Class D airtightness).
- Direct insertion between circular ducts in the network.
Product Description:
The interior of the OCTA silencer is lined with mineral wool and a glass veil to effectively absorb sound. The outer casing is made of plain galvanized steel or aluminum, with an inner casing of perforated galvanized steel or aluminum. Connection spigots with seals are available for diameters from Ø 125 to Ø 630 mm, with standard connection spigots for larger sizes.
Application Areas:
- Collective residential housing
- New construction and renovation projects
- Tertiary sector premises
Installation:
The silencer is designed to be inserted directly between two circular ducts within the ventilation network.
Technical Specifications:
General Data:
| Reference | Insulation Thickness (mm) | Main Material | Insulation Material |
| 11094639 | 100 | Galvanized Steel | Rock Wool |
Dimensional Data:
| Reference | F (mm) | G (mm) | Ø d (mm) | Ø D (mm) | Weight (kg) |
| 11094639 | 910 | 1010 | 450 | 630 | 26 |
Diagram showing dimensions F, G, Ød, and ØD for the OCTA silencer.
Acoustic Data (Measured according to ISO 7235):
| Reference | Acoustic Attenuation at 1000 Hz (dB) | Acoustic Attenuation at 125 Hz (dB) | Acoustic Attenuation at 2000 Hz (dB) | Acoustic Attenuation at 250 Hz (dB) | Acoustic Attenuation at 4000 Hz (dB) | Acoustic Attenuation at 500 Hz (dB) | Acoustic Attenuation at 63 Hz (dB) | Acoustic Attenuation at 8000 Hz (dB) |
| 11094639 | 13 | 3 | 4 | 8 | 3 | 14 | 3 | 3 |
Regulatory Data:
| Reference | Fire Classification |
| 11094639 | A1 |
Materials and Construction:
- Outer casing: Plain galvanized steel or aluminum.
- Inner casing: Perforated galvanized steel or aluminum.
- Connection spigots: With seals for Ø 125 to Ø 630 mm; standard for larger sizes.
- Acoustic insulation: Mineral wool + glass veil.
- Fire classification: MO (equivalent to A1 according to Euroclasses).
- Special version tested for 400°C - 2h available upon request.
- Airtightness: Product Class D according to EN 12237.
For more information, contact your Aldes advisor.
Aldes reserves the right to make any modifications to its products related to technical evolution. Information is non-contractual.
