Acoustic flexible ducting

CCL Veloduct has introduced acoustic versions of its Tecflex flexible ducting for applications such as theatres, libraries and law courts. Tecsonic significantly reduces duct-borne noise between the main duct to VAV boxes and air terminal devices. Bends with a radius of half the diameter can be formed. These products have been independently tested at Sound Research Laboratories to determine static insertion loss for various diameters and lengths. Standard Tecsonic acoustic flexible ducting comprises an inner core of multi-ply, aluminium-polyester laminate supported by an encapsulated high-tensile steel wire helix. The core has closely spaced micro-perforations to enhance acoustic performance while virtually eliminating any possibility of fibres migrating into the air. The inner core is wrapped in a 25 mm blanket of high-density glass fibre to ensure consistent acoustic insulation along the entire length of the ductwork. For ‘clean’ applications such as hospital operating theatres, Tecsonic S also has an acoustically transparent inter-liner between the inner core and the glass-fibre layer to prevent any possibility of fibres entering the air stream. Tecsonic ducting is available in diameters from 102 to 508 mm and is suitable for air velocities up to 3 m/s.

Related links:

• www.cclveloduct.co.uk