SAR-G • Circular sound attenuators

Circular sound attenuator in galvanized steel with insulation shell thickness of 50 or 100 mm wrapped in a glass film for air speeds up to 20 m / s

Attenuation values according to DIN EN ISO 7235 (63, 125, 250, 500, 1k, 2k, 4k, 8k [Hz])

• Circular silencers are designed with an external galvanised duct system
• Insulation with thickness 50 mm (SAR-G50) or 100 mm (SAR-G100)
  
• Inner casing is made of perforated sheet steel
• Complete with optional ‘safe’ seal but also suitable for direct connection to spiral duct / fittings
  
• The void between the two is filled with sound-absorbing non-combustible mineral wool according to DIN4102 A2, specific mass> 20 kg / m³, building material class A2
• Mineral wool certified according to RAL GZ 388
• Connection to circular air ducts according to DIN EN 1506 or DIN EN 13180
• Class D airtight connection with EPDM rubber according to DIN EN 12237
• Airtight connection class D with EPDM rubber according to DIN EN 12237

• The attenuators should be mounted using duct suspension clamps, type OBDC, around the duct connection DN