Spiro-SAFE premium silencer diameter 315 mm - length 600 mm with core (100 mm insulation)

Spiro-SAFE premium sound attenuator diameter 315 mm - length 600 mm with core (100 mm insulation)

The Spiro-SAFE premium sound attenuator diameter 315 mm - length 600 mm with core (100 mm insulation) is a round ventilation sound attenuator made from galvanized steel, specifically designed for use in ventilation and air handling ducts. This attenuator is engineered to effectively reduce noise generated by air flow and mechanical fans, ensuring that the sound levels in occupied and technical spaces remain within acceptable limits.
The connection of the sound attenuator features male connectors (spigot ends) on both sides with an integrated double EPDM lip seal, providing an airtight and reliable connection to round ventilation ducts.

Practical information

Sound absorption is achieved through glass wool placed between the inner and outer casing of the attenuator. Depending on the model, the wool thickness is 50 mm or 100 mm for the PREMIUM-100 version. The mineral wool is flexible and cut from roll material, allowing it to conform closely to the shape of the attenuator and ensuring uniform sound reduction along the entire length of the product. This guarantees consistent attenuation even with variable airflows and smaller duct sizes.

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

The construction is sturdy and functional, with a durable outer shell capable of withstanding mechanical stresses during installation and use. The product code clearly indicates the type of attenuator, insulation thickness, duct diameter (Ød1), and attenuator length. This makes it easy to select the correct attenuator for any ventilation project, ranging from residential buildings to complex commercial applications.

Why is the premium version better than the standard version?

The premium sound attenuator has several advantages over the standard model that make it better suited for certain applications:

1. Wool thickness: The premium sound attenuator uses 100 mm thick mineral wool cut from roll material. This allows the insulation to better conform to the inner shape of the attenuator and provides a more uniform sound attenuation.
2. Central core: Starting from diameter 315, the premium attenuators are equipped with a core in the centre. This core directs the airflow through a perforated inner tube, increasing the contact of sound waves with the absorptive layer. As a result, mid- and high-frequency noise is attenuated more effectively.
3. More uniform sound reduction: The combination of flexible insulation, proper sealing, and thoughtful construction ensures the premium version delivers more consistent noise reduction across a broad frequency range. The standard version may have slightly less uniform attenuation, particularly at lower frequencies.