Spiro-SAFE premium silencer diameter 630 mm - length 1200 mm with core (100 mm insulation) without plug connections

Spiro-SAFE premium acoustic attenuator diameter 630 mm - length 1200 mm with core (100 mm insulation)

The Spiro-SAFE premium acoustic attenuator diameter 630 mm - length 1200 mm with core (100 mm insulation) is a round ventilation silencer made from galvanized steel, specifically designed for use in ventilation and air handling ducts. This attenuator is engineered to effectively reduce noise caused by airflow and mechanical fans, ensuring that sound levels in occupied spaces and technical rooms remain within acceptable limits.
The connection on both ends of the attenuator features a male end (spigot) with an integrated double EPDM lip seal, providing an airtight and reliable joint with round ventilation ducts.

Practical information

Sound absorption is achieved through glass wool positioned between the inner and outer shells of the attenuator. Depending on the model, the wool thickness is 50 mm or 100 mm for the PREMIUM-100. The mineral wool is flexible and cut from roll material, allowing it to conform well to the shape of the attenuator and ensuring uniform sound attenuation along the entire length of the product. This provides consistent damping even with variable airflow rates and smaller duct diameters.

The outer casing is made from high-quality galvanized steel to guarantee durability and reliability, resulting in a robust and corrosion-resistant finish.

The construction is sturdy and functional, with a solid outer shell resistant to mechanical stress during installation and operation. The product code clearly indicates the type of attenuator, insulation thickness, duct diameter (Ød1), and attenuator length. This makes it easy to select the right attenuator for any ventilation project, from residential buildings to complex commercial applications.

Why is the premium variant superior to the standard variant?

The premium acoustic attenuator offers several advantages over the standard version, making it better suited for certain applications:

1. Wool thickness: The premium attenuator uses 100 mm thick mineral wool cut from rolls. This allows the insulation to better conform to the internal shape of the attenuator, ensuring more uniform sound attenuation.
2. Central core: From diameter 315 onwards, the premium attenuators feature a central core. This core directs airflow through a perforated inner tube, increasing contact between sound waves and the absorption material. This particularly enhances attenuation of mid and high frequencies.
3. More uniform sound reduction: The combination of flexible insulation, tight connections, and thoughtful construction ensures the premium variant delivers a more consistent sound reduction across a wide frequency range. The standard variant may show slightly less uniform attenuation, especially at lower frequencies.