Chapter 6 — WATER SUPPLY AND DISTRIBUTION
605.10 PEX-AL-PEX Plastic Tubing and Joints.
California Plumbing Code (Title 24, Part 5) · 2022 edition · updated 2026-09-12 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
PEXAL-PEX plastic pipe or tubing and fitting joining methods shall be installed in accordance with the manufacturer’s installation instructions and shall comply with Section 605.10.1 and Section 605.10.1.1.
[DSA-SS, DSA-SS/CC, BSC, HCD 1 & HCD 2] PEX-AL- PEX is not adopted for use in potable water supply and dis- tribution systems.
605.10.1 Mechanical Joints. Mechanical joints between PEX-AL-PEX tubing and fittings shall include mechanical and compression type fittings and insert fittings with a crimping ring. Insert fittings utilizing a crimping ring shall comply with ASTM F1974 or ASTM F2434. Crimp joints for crimp insert fittings shall be joined to PEX-AL-PEX pipe by the compression of a crimp ring around the outer circumference of the pipe, forcing the pipe material into annular spaces formed by ribs on the fitting.
[BSC] PEX-AL-PEX is not adopted for use in potable water supply and distribution systems.
605.10.1.1 Compression Joints. Compression joints shall include compression insert fittings and shall be joined to PEX-AL-PEX pipe through the compression of a split ring or compression nut around the outer circumference of the pipe, forcing the pipe material into the annular space formed by the ribs on the fitting.
[BSC] PEX-AL-PEX is not adopted for use in potable water supply and distribution systems.
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