Qual-Pex Pipe & Ducting

Qual-PEX pipe is manufactured by Pipelife, one of the world's leading suppliers of plastic pipe systems, manufacturing and distributing within 28 countries with total worldwide sales of 894 million Euros.

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Qual-PEX is made from cross linked polyethylene which is an extremely chemically and thermally stable material. Qual-PEX offers many advantages over other types of plastic or metal pipes. These include:

• Kitemarked to BS 7291 – Class ‘S’
• Completely non-toxic
• Free of lead, copper and other harmful metals
• Superior tolerance to high / low temperatures and pressure
• Life expectancy of well over 50 years
• Flexible and easy to install

Qual-PEX barrier pipe incorporates an EVOH barrier layer within the pipe wall. This prevents permeation of oxygen through the tubing. The mixing valves, boilers and other components used in the underfloor heating systems are ferrous (metallic) and are subject to corrosion. To eliminate corrosion due to oxygen permeation, Qual-PEX oxygen barrier pipe should always be used for underfloor heating. The minimum rate of oxygen permeation permitted for tubing used in heating systems is specified in the German DIN Standard 4726. it states the allowable permeation should not exceed 0.1 grams / m³ / day at 50ºC. Qual-PEX barrier pipe surpasses this requirement and so virtually eliminates the permeation of oxygen through the pipe wall.

Ducting

Qual-PEX should be sleeved in ducting when passing through walls, expansion joints and where it enters and exits floor screeds. The use of ducting is also recommended to limit thermal expansion in areas where the pipe runs are very close together such as near manifold positions and to prevent excessive hotspots in this area. It may also be used in areas where pipes are running under kitchen units or other fixtures where heat emission is not desired.

All prices shown are inclusive of 17.5% VAT