Spiro-SAFE silencer diameter 630 mm - length 900 mm (100 mm insulation)

Spiro-SAFE Sound Attenuator Diameter 630 mm - Length 900 mm (100 mm Insulation)

The Spiro-SAFE sound attenuator with a diameter of 630 mm and length of 900 mm (100 mm insulation) is a round ventilation silencer made of galvanized steel, specifically designed for use in ventilation and air handling ducts. This attenuator is engineered to effectively reduce noise generated by airflow and mechanical fans, ensuring that noise levels in occupied and technical spaces remain within acceptable limits.
The attenuator features male connections (spigot ends) on both sides with integrated double EPDM lip seals, creating an airtight and reliable connection with round ventilation ducts.

Practical Information

Sound absorption is achieved using glass wool located between the inner and outer casings of the attenuator. Depending on the variant, the wool thickness is 50 mm or 100 mm for the PREMIUM-100 model. The mineral wool is flexible and cut from roll material, allowing it to conform well to the shape of the attenuator and ensure uniform sound reduction along the entire length of the product. This guarantees consistent attenuation even with variable airflow and smaller duct sizes.

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

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

Why is the Premium Variant Superior to the Standard Variant?

The premium sound 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, allowing the insulation to better conform to the inner shape of the attenuator, resulting in more uniform sound attenuation.
2. Central Core: From diameter 315 mm upwards, premium attenuators feature a central core. The core directs the airflow through a perforated inner tube, increasing contact between sound waves and the absorption layer. This leads to more effective attenuation, particularly of mid and high frequencies.
3. More Uniform Noise Reduction: The combination of flexible insulation, excellent sealing, and thoughtful construction ensures that the premium variant provides more consistent noise reduction across a wide frequency range. The standard variant may offer slightly less uniform attenuation, especially at lower frequencies.