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CK

Circular silencers with splitter for the reduction of noise in circular ducts of ventilation and air conditioning systems

Circular silencer with sound absorbing splitter providing increased insertion loss

  • Aerodynamic splitter provides increased insertion loss
  • Choice of various splitter thicknesses ensures best possible application
  • Attenuation effect due to absorption
  • The sound absorbing material is non-combustible mineral wool and non-hazardous to health according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
  • Acoustic data measured to ISO 7235
  • Leakage class C or D (depending on size) to EN 15727.
  • For use in areas with potentially explosive atmospheres (according to EC Directive 2014/34/EU (ATEX)), zones 1, 2, and zones 21 and 22 (outside) according to EC Directive 1999/92/EC

 

Optional equipment and accessories

  • Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180
  • Socket-type spigot suitable for circular ducts to EN 1506 or EN 13180

General information

Application

  • Circular silencer for the reduction of noise in circular ducts of ventilation and air conditioning systems
  • 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
  • Choice of 2 splitter widths for each nominal diameter
    • Increased insertion loss with a wider splitter
    • Reduced differential pressure with a smaller splitter
  • The sound absorbing material is non-combustible
  • Insulation thickness 50 mm or 100 mm
  • Leakage class D for nominal sizes up to and including 400 mm
  • Leakage class C from nominal size 450 mm


Nominal sizes

  • ØD: 250, 315, 400, 450, 500, 560, 630, 710, 800, 900, 1000 mm
  • L: 500, 1000, 1500 mm


Variants

Insulation thickness

  • 050: Circular silencer with 50 mm insulation
  • 100: Circular silencer with 100 mm insulation

Splitter width

  • T: 50, 100, 150, 200, 250, 300 mm


Construction

Circular silencers

  • No entry: galvanised steel 1.0917
  • A2: Stainless steel 1.4301


Type of connection

  • No entry: Spigot with groove on both ends
  • D2: Spigot with lip seal on both ends
  • AS: Spigot with lip seal and socket-type spigot on one end


Parts and characteristics

  • Circular casing
  • Perforated inner duct
  • Splitter
  • Sound absorbing material


Construction features

  • Circular casing
    • Outer duct: spiral duct, galvanised steel 1.0917
    • Outer duct: plain duct, stainless steel 1.4301
  • Splitter
    • Aerodynamic shape, galvanised steel 1.0917 or stainless steel 1.4301
  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Lip seals up to nominal size 800
  • Max. operating pressure 2000 Pa
  • Max. airflow velocity 20 m/s
  • Max. operating temperature 90 °C



Material and surfaces

  • Splitter made of galvanised sheet steel 1.0917 or stainless steel 1.4301
  • Casing pipe as spiral duct made of galvanised steel 1.0917
  • Smooth casing pipe made of stainless steel 1.4301
  • Perforated inner duct made of galvanised steel 1.0917 or stainless steel 1.4301
  • Spigot made of galvanised steel 1.0917 or stainless steel 1.4301
  • Absorption material is mineral wool

    • To EN 13501, fire rating class A1, non-combustible

    • Non-hazardous to health according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC

    • Protection against erosion from airflow velocities up to 20 m/s

      • Inner duct with non-woven fibre (fleece)

      • Splitters faced with glass fibre scrim

    • Inert to fungal and bacterial growth according to EN 846


Standards and guidelines

  • Insertion loss and sound power of air-regenerated noise tested according to ISO 7235
  • Meets the hygiene requirements of VDI 6022, VDI 3803 Part 1 and DIN 1946 Part 4
  • EC Directive 2014/34/EC (ATEX): Equipment and protective systems intended for use in areas with potentially explosive atmospheres
  • EC Directive 1999/92/EC (ATEX): Improvement of the safety and health protection of workers potentially at risk from explosive atmospheres
  • Leakage class according to DIN EN 15727


Maintenance

  • Low-maintenance as construction and materials are not subject to wear


Technische informatie

Technical data, Quick sizing, Specification text, Order Code

  • Technical data
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

Nominal sizes250 – 1000 mm
Operating pressure2000 Pa max.
Operating temperature90 °C max.

Kombinationen Halbbild

  • Kombinationen Halbbild

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Installation details


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Installation and commissioning



  • Follow the installation manual and comply with the general codes of good practice in order to achieve the given performance data
  • Installation in ducts outside closed rooms requires sufficient protection against the effects of weather
  • Due to its weight the silencer must be supported, e.g. by a suitable fixing system.

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Downloads

Productinformatie

Certificaten

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Bedankt voor uw bericht!

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Onze afdeling voor service-aanvragen zal op korte termijn contact met u opnemen.
Voor algemene vragen over producten en diensten kunt u ons ook bereiken op:
Tel.: +32 (0) 2/522 07 80