Description Underfloor Heating PEX AL PEX Pipe 20mm x 50m Normal Size 20×2 Outside Diameter (mm) 20 Inside Diameter (mm) 16 Burst Pressure (mpa) Min 6.0 Minimum Thickness of Aluminium (mm) 0.25 Long Term Hydrostatic Strength (mpa) 2.7 PEX AL PEX Pipe Multilayer pipes consist of an inner PEX-b layer (polyethylene mesh), an aluminium middle layer welded lengthwise (head-head) with laser/TIG technology and an outer white PEX-b layer. The adhesive middle layers join the aluminium and PEX-b layers homogeneously. The aluminium layer provides a safe barrier against oxygen and other gases along with an outstanding resistance to crushing. Multilayer pipes are fit for domestic water, heating and cooling systems according to standard EN 21003. PEX AL PEX Pipe Min. working temperature: -60 °C (but always above freezing temperature of transfer fluid) Max. working temperature (EN ISO 21003): 95°C Max. working pressure (EN ISO 21003): 10 bar • Density at 23 °C: > 0,950 g/cm3 (polyethylene mesh) Softening temperature: 135 °C Permeability to oxygen: 0 mg/l • Reaction to fire (EN 13501-1): C-s2,d0S approved 50 year warranty
