Nordfab QF clipped ducting

Nordfab QF offers a smooth easily cleaned internal surface, virtually leakproof seams and joints and the ability to simply unclip any section or fitting for inspection and cleaning. Duct sections feature plasma welded seams and rolled ends that can be clipped together in seconds - robust re-sealable gaskets and positive action clips require no tools. The resulting duct system is suitable for systems that must conform to DW/144 class A, B and C leakage standards. In addition, the ease of inspection and cleaning afforded by the easy clip-together design enable compliance with HVCA Guide TR/19 (Sects 3 & 7) by design. Nordfab QF is therefore the natural choice for kitchen extract systems in accordance with HVCA DW/172 principles of good design.

Sizes range from 80mm to 710mm diameter and ducting is manufactured from bright galvanised steel in thicknesses from 0.7 to 1.2mm as standard, with 2.0mm thick available for heavy duty. Stainless steel is a factory option. A full complement of bends, elbows, dampers and branches is available, together with hoods, end caps and all installation components. Versatile slip joints, in all duct sizes ensure a good looking accurate installation every time.

The clipped together design not only saves installation time, but removes the need for inspection panels and elbows, saving further cost and simplifying the whole job. The design also lends itself to alteration or expansion as the need arises. Indeed it may be dismantled and re-fitted elsewhere to suit a totally different plant layout.

In addition to the standard QF range there are many complementary components for special situations, such as CARZ ATEX back pressure flap to prevent propagation of hot matter along a duct arising from an explosion elsewhere in a system.

To enable fitting of fire or explosion protection devices, the Nordfab QF range has been independently tested under explosive conditions to validate a reduced explosion pressure (Pred) of 0.8 bar, a value that offers a generous safety margin. Therefore safety compliance is assured when handling flammable or explosive dusts, which include most plant based materials, many chemicals as well as metal dusts.

Flanged ducting
in heavier gauges is available for more demanding applications for example with abrasive dusts such as metals and quarry products and also for higher temperature applications including flue gas from foundry processes and incineration.

Dampers and back pressure flaps
are available for all ducting systems and include ATEX certified non-return flaps for explosion protection.
Please click here to download CARZ - back pressure flap data sheet.

To download Nordfab Ducting interactive catalogue click here.

To find out more and buy Nordfab Ducting online go to www.nordfabducting.co.uk