Spiro-SAFE silencer diameter 400 mm - length 1200 mm (100 mm insulation)

Spiro-SAFE Sound Attenuator Diameter 400 mm - Length 1200 mm (100 mm Insulation)

The Spiro-SAFE sound attenuator diameter 400 mm - length 1200 mm (100 mm insulation) is a circular ventilation sound attenuator made of galvanized steel, specifically developed for use in ventilation and air handling ducts. This attenuator is designed to effectively reduce noise generated by airflow and mechanical fans, ensuring that sound levels in occupied and technical spaces remain within acceptable limits. The attenuator connections feature male ends (insertion ends) on both sides, equipped with integrated double EPDM lip seals, 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 design, the wool thickness is 50 mm for the standard version and 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 guarantee uniform sound reduction along the entire length of the product. This ensures consistent attenuation even with variable airflow and smaller duct dimensions.

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 robust and functional, with a sturdy outer casing that withstands mechanical stress during installation and use. The product code clearly indicates the attenuator type, insulation thickness, duct diameter (Ød1), and attenuator length. This makes selecting the correct attenuator for any ventilation project straightforward, from residential buildings to complex commercial applications.

Why is the Premium Variant Better than the Standard Variant?

The premium sound attenuator offers several advantages over the standard version, making it more suitable for specific 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, resulting in more uniform sound attenuation.
2. Central Core: For diameters from 315 mm upwards, the premium attenuators feature a central core. The core directs airflow through a perforated inner tube, increasing the contact of sound waves with the absorbent layer. This particularly enhances attenuation of mid and high frequencies.
3. More Uniform Sound Reduction: The combination of flexible insulation, tight fit, and thoughtful construction ensures the premium version provides a more consistent sound reduction across a wide frequency range. The standard version may show less uniform sound reduction, especially at lower frequencies.