Acoustic Circular Silencers

Circular industrial noise silencers constructed with a mineral wool absorbent material covered with perforated metal sheet with an exterior cover of seamed sheet metal.

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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
Modular Acoustic Circular Silencers dimensions

Specific Model List & Performance

acoustic data for silencer types

acoustic data for silencer types

View more examples in our Projects Sections

Modular Acoustic Circular Silencers
Large cylinder acoustic silencers on rooftop outlets