Type CB

For the increased reduction of noise in circular ducts, galvanised sheet steel construction

 

Circular silencers made of galvanised sheet steel for the reduction of noise in circular ducts of air conditioning systems, with increased insertion loss due to sound absorbing pod

  • Absorption material is non-combustible mineral wool with RAL quality mark, biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
  • Mineral wool faced with glass fibre fabric as protection against erosion, effective with airflow velocities up to 20 m/s
  • Casing, perforated inner duct and pod are galvanised sheet steel
  • Pod with domed end upstream to reduce the differential pressure
  • Variant with spigot has a groove for a lip seal, suitable for circular connecting ducts to EN 1506 or EN 13180
  • Insertion loss measured according to ISO 7235
  • Casing air leakage to EN 15727, class B


Optional equipment and accessories

  • With flanges on both ends
  • Lip seal
small_tab1_Serie CB
  • Application
  • Description

Application

  • Circular silencers Type CB for the reduction of air-regenerated noise in the circular ducts of air conditioning systems
  • For the reduction of air-regenerated noise
  • For the reduction of fan noise

Special characteristics

  • Insertion loss measured according to ISO 7235
  • Increased insertion loss due to sound absorbing pod
  • Pod with domed end upstream to reduce the differential pressure
  • Absorption material is non-combustible
  • Insulation thickness 50 mm or 100 mm

Variants

  • 050: Circular silencer with 50 mm insulation
  • 100: Circular silencer with 100 mm insulation
  • CB ../VF1: Circular silencer with flange on one end (end with domed cap)
  • CB ../VF2: Circular silencer with flanges on both ends
  • Special versions upon request

Parts and characteristics

  • Casing
  • Perforated inner duct
  • Sound absorbing pod

Accessories

  • Matching flange for one end
  • Matching flanges for both ends
  • Lip seals on both ends (factory fitted)

Construction features

  • Circular casing
  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Spigot with groove for lip seal
  • Operating pressure up to 1000 Pa
  • Operating temperature up to 100 °C

Materials and surfaces

  • Casing, perforated inner duct and pod are galvanised sheet steel
  • Lining is mineral wool


 

Mineral wool

  • To EN 13501, fire rating class A2, non-combustible
  • RAL quality mark RAL-GZ 388
  • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EG
  • Faced with glass fibre fabric as protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

Technical information

  • Technical data
  • Quick sizing
  • Specification text
  • Order code
cb
cb

 

Circular silencers with sound absorbing pod for better acoustic performance, rigid construction, for air conditioning systems, available in 11 nominal sizes.

Insertion loss measured according to ISO 7235.

Casing with acoustic and thermal insulation.

Optimised differential pressure due to the sound-absorbing pod with domed end upstream.

Various types of connection, suitable for circular ducts to EN 1506 or EN 13180.

Casing air leakage to EN 15727, class B.

Special characteristics

  • Insertion loss measured according to ISO 7235
  • Increased insertion loss due to sound absorbing pod
  • Pod with domed end upstream to reduce the differential pressure
  • Absorption material is non-combustible
  • Insulation thickness 50 mm or 100 mm

Materials and surfaces

  • Casing, perforated inner duct and pod are galvanised sheet steel
  • Lining is mineral wool


 

Mineral wool

  • To EN 13501, fire rating class A2, non-combustible
  • RAL quality mark RAL-GZ 388
  • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EG
  • Faced with glass fibre fabric as protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

Technical data

  • Nominal sizes: 250 to 1000 mm
  • Operating pressure: 1000 Pa max.
  • Operating temperature: 100 °C max.
cb

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Contact

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +43 1 250 43-0| Fax: +43 1 250 43 34