Type C: Specialist materials – Acoustic Range #2 performance summary:

• Type: ASBM-8 - Acoustic Barrier Material #2.
• Operating Temperature Range: -20°C to +85°C.
• Operating Pressure Range: 254mm WG (10” WG) (Max).
• Typical Applications: Heating & Ventilation in noise sensitive areas.

 

Single Layer Flexible Connections – All Types:

• Single Layer, or “ply” Flexible connections are designed to provide: Vibration isolation, absorb expansion, compensate for misalignment in ductwork and reduce noise breakout when using flexible materials having dedicated noise attenuation properties.
• Available in the following standard geometries:
• “Circular Flat Flanged” (C.F.F.) - Circular with “plain ends” suitable for “Jubilee Clip” type installation.
• “Rectangular Flat Flanged” (R.F.F.) - Square / rectangular with “plain ends” suitable for backing flat installation.
• “Circular Angle Flanged” (C.A.F.) - Circular with flanged ends at 90 degrees to the body suitable for steel backing flanges.
• “Rectangular Angle Flanged” (R.A.F.) - Square or rectangular with flanged ends at 90 degrees to the body suitable for steel backing flanges.
• Can also be manufactured as tapering and / or transitioning from circular to rectangular geometries.
• Can be supplied pre-punched to match clients existing ductwork flanges or “plain flanges” for drilling during installation, where specific hole centres are unknown.
• Fire rated materials available for specific applications.
• All related steelwork can be specified, designed and manufactured in-house, including:
• Steel Backing Flats / Flanges, Steel Inner sleeves to protect the Flexible Connection from abrasive particles or high velocity gasses / buffeting.

 

Types of Flexible Connections available, (the majority of which are coated in-house):

Type A: Silicone Coated Glassfabric.

Type B: Neoprene Coated Glassfabric.

 

Acoustic Performance:

Octave Band Frequencies (Hz)	Sound Reduction Index (dB)
125	18.8
250	18.3
500	21.8
1000	25.6
2000	29.0
4000	34.8

 

Reference Table:

Type	Description	Temperature	Pressure (Max)
ASBM-8	Acoustic Barrier Material #2	-20°C to +85°C	254mm WG