Type 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/EG
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
Construction variant with spigot connection suitable for circular ducts accor ding to DIN 8077 or DIN 8078
Insertion loss tested to EN ISO 7235
Casing air leakage to EN 15727, class D

Optional equipment and accessories

With flanges on both ends

Application

Plastic circular silencers Type CAK for the reduction of noise in the circular ducts of air conditioning systems
Suitable for contaminated air
For the reduction of air-regenerated noise of air terminal units TVRK and TVLK
For the reduction of fan noise

Special features

Insertion loss measured according to ISO 7235
Absorption material is non-combustible

Variants

CAK: Circular silencer
VF2: Circular silencer with flanges on both ends

Parts and characteristics

Casing
Perforated inner tube
Absorption material

Accessories

GZ: Matching flanges for both ends

Construction features

Circular casing
Spigot suitable for circular ducts according to DIN 8077 or DIN 8078
Maximum operating pressure 1000 Pa
Operating temperature 10 to 100 °C

Materials and surfaces

Casing and perforated inner duct are flame-resistant polypropylene (PPs) to DIN 4102, building class B1
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 as protection against erosion through airflow velocities up to 20 m/s
Inert to fungal and bacterial growth

Información técnica

Plastic circular silencers for use in extract air systems subject to aggressive media; they reduce the air-regenerated noise in plastic ducts (absorption principle).

Insertion loss measured according to ISO 7235.

Absorption material is mineral wool with RAL quality mark RAL-GZ 388.

Spigot, suitable for ducts according to DIN 8077.

Casing air leakage to EN 15727, class D.

Special features

Insertion loss measured according to ISO 7235
Absorption material is non-combustible

Materials and surfaces

Casing and perforated inner duct are flame-resistant polypropylene (PPs) to DIN 4102, building class B1
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 as protection against erosion through airflow velocities up to 20 m/s
Inert to fungal and bacterial growth

Technical data

Nominal sizes: 125 – 400 mm
Operating pressure: 1000 Pa max.
Operating temperature: 100 °C max.

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