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Cylindrical
attenuators


Noise reduction for air distributing systems

TROX circular silencers are intended for use in room air conditioning systems.

In air distribution systems they can be used to attenuate fan noise and to reduce the air-regenerated noise of air terminal units.

To avoid sound transmission through ventilation ducting between adjacent rooms they can be integrated into the duct system as so called cross talk silencers.

Type CA

CA 160
  • Circular silencer in rigid construction
  • Casing and perforated inner duct galvanised sheet steel
  • Lining is mineral wool conforming to DIN 4102, fire rating class A2, with RAL quality mark RAL-GZ 388
  • Mineral wool faced with fibreglass as protection against erosion suitable for air velocities up to 20 m/s
  • Insertion loss tested according to DIN EN ISO 7235

more details

circular

Ø 100 – 1,000 mm
L: 500 – 1,500 mm
Insulation thickness:
50 or 100 mm

Galvanised steel

Casing air leakage flow rate complies with DIN EN 1751, class A

Type CB

CB 250
  • Circular silencer in rigid construction with additional sound-absorbing pod for higher insertion loss
  • Casing and perforated inner duct galvanised sheet steel
  • Lining is mineral wool conforming to DIN 4102, fire rating class A2, with RAL quality mark RAL-GZ 388
  • Mineral wool faced with fibreglass as protection against erosion suitable for air velocities up to 20 m/s
  • Insertion loss tested according to DIN EN ISO 7235

more details

circular

Ø 250 – 1,000 mm
L: 500 – 1,500 mm
Insulation thickness:
50 or 100 mm

Galvanised steel

Casing air leakage flow rate complies with DIN EN 1751, class A

Type CS

CS 160
  • Circular silencer in rigid construction
  • Outer casing and perforated inner duct are aluminium
  • Lining is mineral wool conforming to DIN 4102, fire rating class A2, with RAL quality mark RAL-GZ 388
  • Mineral wool faced with fibreglass as protection against erosion suitable for air velocities up to 20 m/s
  • Insertion loss tested according to DIN EN ISO 7235

more details

circular

Ø 80 – 400 mm
L: 500 – 2,000 mm
Insulation thickness:
25 or 50 mm

Aluminium

Casing air leakage flow rate complies with DIN EN 1751, class A

Type CF

CF 160
  • Circular silencer in flexible construction
  • Outer casing and perforated inner duct are aluminium
  • Lining is mineral wool conforming to DIN 4102, fire rating class A2, with RAL quality mark RAL-GZ 388
  • Mineral wool faced with fibreglass as protection against erosion suitable for air velocities up to 20 m/s
  • Insertion loss tested according to DIN EN ISO 7235

more details

circular

Ø 80 – 400 mm
L: 500 – 2,000 mm
Insulation thickness:
25 or 50 mm

Aluminium

Casing air leakage flow rate complies with DIN EN 1751, class A

Type CAK

CAK
  • Circular silencer in rigid construction
  • Outer casing and perforated inner duct are flame resistant plastic polypropylene PPs to DIN 4102, fire rating class B1
  • Lining is mineral wool conforming to DIN 4102, fire rating class A2, with RAL quality mark RAL-GZ 388
  • Mineral wool faced with fibreglass as protection against erosion suitable for air velocities up to 20 m/s
  • Insertion loss tested according to DIN EN ISO 7235

more details

circular

Ø 110 – 400 mm
L: 500 – 1.500 mm
Insulation thickness: 50 mm

Plastic (PPs)

Casing air leakage flow rate complies with DIN EN 1751, class C




Reference

Schalke-Arena

One trusts in TROX attenuation also „On Schalke“.
Reference

Installation examples

Here you can see what you don´t hear.
More installation examples

Contact

TROX GmbH

Heinrich-Trox-Platz
D-47504 Neukirchen-Vluyn
Tel.: +49 (0)2845 / 202-0
Contact and locations