Spiro-SAFE silencer diameter 450 mm - length 900 mm (100 mm insulation)

Spiro-SAFE Sound Attenuator Diameter 450 mm - Length 900 mm (100 mm Insulation)

The Spiro-SAFE sound attenuator with a diameter of 450 mm and length of 900 mm (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 airflow and mechanical fans, ensuring that sound levels in occupied spaces and technical rooms remain within acceptable limits.
The connections on both ends feature male fittings (spigots) 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 positioned between the inner and outer casing of the attenuator. Depending on the model, the wool thickness is 50 mm for the standard version and 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 sound attenuation along the entire length of the product. This ensures consistent damping, even with variable airflows 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 robust and functional, featuring a sturdy outer casing capable of withstanding mechanical stresses during installation and operation. The product code clearly indicates the attenuator type, insulation thickness, duct diameter (Ød1), and attenuator length, making it easy to select the right attenuator for any ventilation project, from residential buildings to complex commercial applications.

Why Is the Premium Variant Better Than the Standard Version?

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

1. Wool Thickness: The premium sound attenuator uses 100 mm thick mineral wool cut from a roll. This allows the insulation to better conform to the internal shape of the attenuator, ensuring more uniform noise reduction.
2. Central Core: From diameter 315 mm upwards, the premium attenuators feature a central core. This core directs airflow through a perforated inner tube, increasing the contact of sound waves with the absorption layer. This design particularly improves attenuation at mid and high frequencies.
3. More Uniform Sound Reduction: The combination of flexible insulation, secure connections, and thoughtful construction results in the premium version providing more consistent noise attenuation across a wide frequency range. The standard variant may show slightly less uniform sound reduction, especially at lower frequencies.