(1)
PE/AL/PE composite pipe and fittings used for potable water systems shall conform to CSA B137.9, “Polyethylene/aluminum/polyethylene (PE-AL-PE) composite pressure-pipe systems.” (See Note A-7.2.5.12.(1))
(2)
Except as provided in Sentences (3) and (4), PE/AL/PE pipe and fittings shall not be used in hot water systems.
(3)
PE/AL/PE pipe with a pressure rating of 690 kPa or greater at 82ºC shall be permitted for hot water systems.
(4)
PE/AL/PE pipe with a pressure rating of 690 kPa or greater at 82ºC shall be used with fittings that conform to CSA B137.10, “Crosslinked polyethylene/aluminum/crosslinked polyethylene (PEX-AL-PEX) composite pressure-pipe systems,” in hot water systems.