Spiro-SAFE premium silencer diameter 450 mm - length 600 mm with core (100 mm insulation) without plug connections

Spiro-SAFE premium sound attenuator diameter 450 mm - length 600 mm with core (100 mm insulation)

The Spiro-SAFE premium sound attenuator diameter 450 mm - length 600 mm with core (100 mm insulation) is a round 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 generated by airflow and mechanical fans, ensuring that sound levels in occupied spaces and technical rooms remain within acceptable limits. The attenuator features male connections (insertion ends) with integrated double EPDM lip seals on both sides, providing an airtight and reliable connection to round ventilation ducts.

Practical information

Sound absorption is achieved through glass wool located between the inner and outer shell of the attenuator. Depending on the version, the wool thickness is 50 mm for the standard 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 noise reduction along the entire length of the product. This ensures consistent attenuation even at variable airflow rates and smaller duct sizes.

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

The construction is solid and functional, with a sturdy outer shell that withstands mechanical stress during installation and use. The product code clearly provides information about the attenuator type, insulation thickness, duct diameter (Ød1), and the 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 that make 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 inner shape of the attenuator, resulting in more uniform noise attenuation.
2. Central core: From diameter 315 upwards, the premium attenuators are equipped with a core in the centre. The central core ensures that air flows through a perforated inner tube, increasing the contact of sound waves with the absorption layer. This particularly enhances attenuation of mid- and high-frequency noise.
3. More uniform noise reduction: The combination of flexible insulation, good fitting connections, and thoughtful construction means the premium variant provides a more consistent noise reduction across a wide frequency range. The standard variant can exhibit slightly less uniform noise reduction, especially at lower frequencies.