Pex AL Pex pipe
PEX-aL-PEX piping comes in sizes diameter nominal (DN) sizes from 16 to 32. Consult the specific PEX-al-PEX piping manufacturers' literature and listings for appropriate pressure ratings. PEX-al-PEX piping is typically sold in coils and straight lengths.
Definition: PEX-al-PEX piping is a coextruded crosslinked polyethylene composite pressure pipe with a welded aluminum tube reinforcement between the inner and outer layers. The inner and outer crosslinked polyethylene layers are bonded to the aluminum tube by a melt adhesive. Overview: PEX-al-PEX piping is a high-temperature flexible plastic pressure pipe with over 30 years of successful use in the European market, including extensive durability and material performance testing. It was first introduced in North America in the early 1990s. It is used for plumbing, hydronic heating and cooling, and snow and ice melting systems. PEX-al-PEX piping is approved in all model plumbing and mechanical codes across the United States and Canada. Product advantage
• Safety of potable water and long-term reliability• Resistance to corrosion, deposits• Flexibility combined with stiffness to hold its shape• Less linear longitudinal thermal expansion/contraction than standard PEX• Aluminum layer prevents oxygen from permeating into the pipe• No flame used for joining, many fitting and joining options• Durability and toughness to survive job site installations• Lightweight, compact, easy to transport Product applications
• Hot- and cold-water plumbing distribution, residential and commercial• Radiant heating and cooling systems (floors, walls, ceilings)• Hydraulic piping and distribution (radiators, fan coils, etc.)• Turf conditioning/pitch heating• Outdoor snow and ice melting system• Chilled water piping 
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