Circular silencers

layer

CAK

Plastic circular silencers for the reduction of noise in the circular ducts of extract air systems for aggressive media

  • 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 non-woven glass fibre as protection against erosion due to airflow velocities up to 20 m/s
  • Casing and perforated inner duct are flame-resistant polypropylene (PPs) to DIN 4102, building class B1
  • Variant with spigot suitable for circular ducts according to DIN 8077 or DIN 8078
  • Insertion loss measured according to ISO 7235
  • Casing air leakage to EN 15727, class D


Optional equipment and accessories

  • With flanges on both ends

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layer

CF

Circular silencers, of a flexible aluminium construction, for the reduction of noise in the circular ducts of ventilation and air conditioning systems

  • The sound absorbing 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
  • Casing and perforated inner duct made of aluminium
  • 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 D

  

Optional equipment and accessories

  • Socket-type spigots on both ends
  • Raised edges at both ends
  • With lip seals on both ends

 

 

 


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layer

CK

Circular silencer with sound absorbing splitter providing increased insertion loss

  • Aerodynamic splitter provides increased insertion loss
  • Choice of various splitter thicknesses ensures best possible application
  • Attenuation effect due to absorption

  • The sound absorbing material is non-combustible mineral wool and non-hazardous to health according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC

  • Acoustic data measured to ISO 7235

  • Leakage class C or D (depending on size) to EN 15727.

  • For use in areas with potentially explosive atmospheres (according to EC Directive 2014/34/EU (ATEX)), zones 1, 2, and zones 21 and 22 (outside) according to EC Directive 1999/92/EC

 

Optional equipment and accessories

  • Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180
  • Socket-type spigot suitable for circular ducts to EN 1506 or EN 13180

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Thank you for your message!

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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