Application area
Circular sound attenuators are specifically designed for use in ventilation systems, to reduce sound from fans, dampers, compressors, generators or other sources.
The design is optimized to achieve maximum effort with minimum pressure drop and can be used for pressures up to 20 bar.
Materials and dimensions
The sound attenuator is usually constructed in stainless steel and the standard sizes are shown in data sheets. However, all sound attenuators can be designed according to customer requirements and non-standard sizes can be supplied on request. The sound attenuators can additionally be equipped with sound packages for improved performance, where the diameter of the package can be adjusted for the best possible reduction.
Noise data
The insulation material used is a mineral wool that is neither toxic nor flammable. It is attached with polyester or fiberglass cloth and a perforated plate to prevent fibers from the wool from entering.
For the circular sound attenuators, the noise data is based on:
- ISO 7235:2003: Acoustic measurement for duct insulators, insertion loss, power level noise and total pressure loss
Sound attenuation achieved by a sound attenuator depends largely on the sound field inside a duct and how the ducts are set up. This is why on-site measurements will often vary from laboratory measurements, because the sound attenuator is affected by factors such as background noise, vibration, etc. To achieve the best possible results, please contact Nordic Steel.
Send us an inquiry and receive a good offer from our skilled professionals. If we lack information to give a price, we will contact you in more detail.
