CF_img_01psd.png
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 control units 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 characteristics

  • 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



Material 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

  • Non-hazardous thanks to high biosolubility according to the German Ordinance on Hazardous Substances and Note Q of the European Regulation (EC) No. 1272/2008

  • 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

TROX Services

production {"x-frame-options"=>"SAMEORIGIN", "x-xss-protection"=>"1; mode=block", "x-content-type-options"=>"nosniff", "x-download-options"=>"noopen", "x-permitted-cross-domain-policies"=>"none", "referrer-policy"=>"strict-origin-when-cross-origin", "strict-transport-security"=>"max-age=31536000; includeSubDomains", "content-type"=>"text/html; charset=utf-8"}

Share page

Recommend this page

Recommend this page by sending a link by mail.

Fields marked with an (*) are required fields.

Share page

Thank you for your recommendation!

Your recommendation has been sent and should arrive shortly.

Contact

We are here for you

Please specify your message and type of request
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265

Your message
Your message to

Fields marked with an (*) are required fields.

Contact

Thank you for your message!

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.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265

Contact

We are here for you

Please specify your message and type of request
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265

Attachment (max. 10MB)
Your message
Your message to

Fields marked with an (*) are required fields.

Contact

Thank you for your message!

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.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265

TROX Logo
By clicking the button, you allow us to provide you with an excellent website experience and easy shopping processes. These cookies include ones that are necessary for the operation of the site and for the control of our services and applications, as well as ones that are used solely for statistical purposes, for convenience settings or to display personalized content. You can decide which categories you want to allow and you can adjust the data utilisation settings based on your individual requirements. Please note that, depending on the settings that you have selected, all functionalities of the page might not be available. You can change your selection at any time.
Cookie settings