Aluminium ventilation aperture silencer CF

mineral wool

FOR THE REDUCTION OF NOISE IN CIRCULAR DUCTS, FLEXIBLE ALUMINIUM CONSTRUCTION Circular silencers, in flexible aluminium construction, for the reduction of noise in the circular ducts of air conditioning systems 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 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 Application Flexible circular silencers Type CF for the reduction of noise in the circular ducts of air conditioning systems For the reduction of air-regenerated noise of air terminal units LVC and TVR, 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 characteristics Insertion loss measured according to ISO 7235 Very flexible and consequently suitable for installation in complicated duct systems and restricted spaces Absorption material is non-combustible Insulation thickness 25 mm or 50 mm Smallest bend radius 3 × outer diameter D₃ Nominal sizes 80, 100, 125, 160, 200, 250, 315, 400 mm