CF | ООО ТРОКС РУС
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Flexible circular silencer Type CF

CF_img_01psd.png

CF

For the reduction of noise in circular ducts, flexible aluminium construction

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

 

 

 


General Information

Application

  • Flexible circular silencer for the reduction of noise in the circular ducts of ventilation and air conditioning systems
  • For the reduction of air-regenerated noise of air terminal units LVC, TVR, TVE and of mechanical self-powered controllers RN and VFC
  • For the reduction of fan noise
  • Can be used as cross talk silencer to reduce the transfer of noise through ducts between neighbouring rooms



Special features

  • Insertion loss measured according to ISO 7235
  • Very flexible and consequently suitable for installation in complicated duct systems and restricted spaces
  • The sound absorbing material is non-combustible
  • Insulation thickness 25 mm or 50 mm
  • Smallest bend radius 3 × outer diameter ØD₃


Nominal sizes

  • 80, 100, 125, 160, 200, 250, 315, 400 mm



Variants

  • 025: Circular silencer with 25 mm insulation
  • 050: Circular silencer with 50 mm insulation
  • AS2: Circular silencer with socket-type spigots on both ends
  • BK2: Circular silencer with raised edges at both ends



Parts and characteristics

  • Casing
  • Perforated inner tube
  • Absorption material


Accessories

  • VD2: With lip seals on both ends
  • AS2: Socket-type spigots on both ends
  • BK2: Raised edges at both ends


Construction features

  • Circular casing
  • Flexible construction
  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Spigot with groove for lip seal
  • Max. operating pressure 1000 Pa
  • Max. operating temperature 100 °C


Materials and surfaces

  • Casing and perforated inner duct made of aluminium
  • Lining is mineral wool
  • End pieces made of aluminium


Mineral wool

  • To EN 13501, fire rating Class A1, non-combustible
  • RAL quality mark RAL-GZ 388
  • Biosoluble and hence non-hazardous to health according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU Directive 97/69/EC
  • Inert to fungal and bacterial growth


Standards and guidelines

  • Insertion loss measured according to ISO 7235
  • Casing air leakage to EN 15727, class D


Maintenance

  • Low-maintenance as construction and materials are not subject to wear


Downloads

product information

certificates

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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.: +7 495 221-5161 | Fax: +7 495 221-5171