Spiro-SAFE premium silencer diameter 560 mm - length 900 mm with core (100 mm insulation) without plug connections

Spiro-SAFE premium sound attenuator diameter 560 mm - length 900 mm with core (100 mm insulation)

The Spiro-SAFE premium sound attenuator diameter 560 mm - length 900 mm with core (100 mm insulation) is a circular ventilation sound attenuator made of 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 and technical spaces remain within acceptable limits.
The attenuator’s connections on both ends feature a male connection (spigot end) with an integrated double EPDM lip seal, providing an airtight and reliable connection to round ventilation ducts.

Practical information

Sound absorption is achieved using glass wool, located between the inner and outer casing of the attenuator. Depending on the version, 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 guaranteeing uniform noise reduction along the entire length of the product. This ensures consistent attenuation even with variable airflow and smaller duct sizes.

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

The construction is sturdy and functional, with a tough outer casing capable of withstanding mechanical stress during installation and operation. The product code clearly provides information about the attenuator type, 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 installations.

Why is the premium variant better than the standard variant?

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

1. Wool thickness: The premium sound attenuator uses 100 mm thick mineral wool cut from rolls. This allows the insulation to better conform to the internal shape of the attenuator, providing more uniform sound attenuation.
2. Central core: From diameter 315 upwards, the premium attenuators include a central core. This core ensures that air flows through a perforated inner tube, increasing the contact of sound waves with the absorption layer. As a result, mid and high frequencies are more effectively attenuated.
3. More uniform sound reduction: The combination of flexible insulation, effective sealing, and thoughtful design ensures that the premium variant offers a more consistent sound reduction across a broad frequency range. The standard variant may exhibit slightly less uniform attenuation, especially at lower frequencies.