Description
Acoustic Circular Silencers | Noise Attenuators
Modular Acoustic Circular Silencers reduce fan and airflow noise transmitted through round ventilation ductwork.
Key Features & Design
- Purpose: Blocks airborne noise and cross-talk between adjacent rooms sharing supply ducts (e.g., in offices).
- Compatibility: Fits circular ventilation pipes with helicoid (spiral) seams.
- Sizes: Available in standard and custom dimensions.
- Materials: Galvanised sheet metal exterior with a perforated interior metal sheet and mineral wool absorbent packing.
- Pressure Limit: Handles maximum pressures up to 200 mm.c.d.a (1,961 Pa).
- Insulation Thickness: Comes in 50mm or 100mm layers.
Silencer Elbows
- Use: Ideal when straight silencers cannot fit, or as a supplement to them.
- Angles: Offered in 30°, 45°, 60°, and 90° bends.
- Performance: Keeps energy losses below 30 Pa.
- Air Velocity: Recommended for airflow speeds under 10 m/s to prevent turbulent noise
Technical Drawing

Specific Model List & Performance


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