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Sound Attenuator – Semi Flexible Ducting

Sound Attenuator/Ducting
FOR USE WITH TITON HRV UNITS

Overview

Titon’s Semi Flexible Sound Attenuator/Silencers consists of a strong multiple layered corrugated perforated aluminium inner duct with an aluminium/polyester laminated outer jacket.  The space between the inner and outer duct is filled with 25mm sound absorbing material which is protected by a vaper barrier.

The duct is fitted with galvanised metal sleeves at both ends to fit to duct work – Female spigots for direct connection to MVHR’s or duct connectors.

Our Semi Flexible Sound Attenuators fulfil all the requirements and are classified as specified within EN 13180: Ventilation for buildings – Duct work – Dimensions and mechanical requirements for flexible ducts.

Features & Benefits

  • Designed for Titon’s MVHR range
  • Easy to fit and install
  • Semi flexible self supporting ducting, minimises airflow resistance
  • Fulfils EN 13180: Ventilation for buildings – Duct work
  • Acoustically tested to BS EN ISO 7235
  • Available in 125mm, 150mm and 200mm diameter
  • Flexibility in shape and length, assists quick and tidy installations
  • Reduces both duct and breakout sound levels
  • Provides both acoustic and thermal insulation
  • Isolates unit to ducting to help prevent noise transmission through vibrations

Technical Information

Technical Information

Product Codes

Product
Code
Product
Type
89720 125mm ø Flexible Silencer 0.5m length F-F
89721 125mm ø  Flexible Silencer 1m length F-F
89722 150mm ø  Flexible Silencer 0.5m length F-F
89723 150mm ø  Flexible Silencer 1m length F-F
89725 200mm ø  Flexible Silencer 0.5m length F-F
89728 200mm ø  Flexible Silencer 1m length F-F

Specification

Temperature range; Inner duct: -30°C to 250°C, Outer jacket -30°C to 140°C
Operating pressure: up to +2000 Pa
Operating air velocity: max. 10 m/s
Min. bending radius: 1 x Ø + 25 mm
Standard length: 0.5 & 1.0 metres
Other diameters available to order.

Construction

Inner duct: Aluminium
Barrier: Nonwoven cloth
Glass wool blanket: 25mm, 16kg/m³
Outer jacket: Alu/poly laminate
R-value glass wool: 0.65 m² K/W
Thermal Conductivity 0.0385w/(m.k)
Appearance: Aluminium

Classification

EU (EN 13501-1):
Inner duct: A1
Outer Jacket: B-s1,d0 mode

Drawing and Dimensions

According to EN-1506
Dnom (mm) Dfemale  (mm) Tol.
125 125.5 +0 ; -0.5
150 150.6 +0 ; -0.6
200 200.7 +0 ; -0.7

Sound Attenuation

Length – 500mm

Dn (mm) H
(mm)
L
(mm)
L
Compressed
(mm)
Attenuation, dB – Mid-frequency, Hz
63 125 250 500 1000 2000 4000 8000
125 175 500 390 6.3 7.1 15.2 19.9 20.3 26.1 17.1 12.9
150 200 500 390 8.3 9.3 17.8 19.4 16.7 25 19.8 13.8
200 225 500 390 9.2 10 17.3 14.3 12.9 15.8 12 8.2

Length – 1000mm

Dn (mm) H
(mm)
L
(mm)
L
Compressed
(mm)

Attenuation, dB – Mid-frequency, Hz
63 125 250 500 1000 2000 4000 8000
125 175 1000 580 12.4 20.1 33.6 29.8 29.5 33.6 32.1 23.6
150 200 1000 580 11.1 11.8 34.2 28.5 26.3 34.9 27.2 21.8
200 225 1000 580 11.1 14.6 29.5 20.7 21 30 17.7 13.2

Attenuation Through The Duct Wall (Breakout) – Length 500mm

Dn (mm) H
(mm)
L
(mm)
L
Compressed
(mm)

Attenuation, dB – Mid-frequency, Hz
63 125 250 500 1000 2000 4000 8000
125 175 500 390 25.3 22.5 17.2 11.9 11.2 11.5 13 18
150 200 500 390 24.8 19.6 14.2 9.6 8.9 10.3 12.6 18.1
200 225 500 390 22.8 17.2 11.9 8 7.2 6.9 9.5 13.7

Attenuation Through The Duct Wall (Breakout) – Length 1000mm

Dn (mm) H
(mm)

L
(mm)
L
Compressed
(mm)

Attenuation, dB – Mid-frequency, Hz
63 125 250 500 1000 2000 4000 8000
125 175 1000 580 25.2 21.6 18.7 13.2 12.2 12.5 14 17.5
150 200 1000 580 23.9 19.4 12.7 9 8 9.1 11.6 14.6
200 225 1000 580 21.8 17.8 12.9 9.3 8.4 8 10.5 13.9

Pressure Loss – (Straight Duct)

*200mm please enquire.

Documentation

Resources

Catalogues

Ventilation Systems Catalogue

17.77 MB (English)
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Ducting Range - VS Catalogue Pages

2.05 MB (English)
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Sound Attenuator – Semi Flexible Ducting - Catalogue Page

466.98 KB (English)
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Ducting - ALU Tape

353.61 KB (English)
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Ducting – Tape – Datasheet

807.03 KB (English)
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