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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

 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

Nominal sizes

• 125, 160, 200, 250, 315, 400 mm

Variants

• CAK: Circular silencer
• VF2: Circular silencer with flanges on both ends
• Casing
• Perforated inner tube
• Absorption material

Accessories

• Matching flanges for both ends, including seals

Construction features

• Circular casing
• Spigot suitable for circular ducts according to DIN 8077 or DIN 8078
• Maximum operating pressure 1000 Pa
• operating temperature 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/EC
• Faced with glass fibre as protection against erosion through airflow velocities up to 20 m/s
• 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

• Maintenance-free as construction and materials are not subject to wear

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To contact TROX Australia about Circular Silencer|CAK use Get a quote.