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Copper or copper-alloy tubing.

Municipal Code of Chicago § 18-28-1303.7
in effect
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18-28-1303.7 Copper or copper-alloy tubing. Joints between copper or copper-alloy tubing or fittings shall be brazed or mechanical joints complying with Section 18-28-1303.3 or flared joints. Flared joints shall be made by a tool designed for that operation.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2689191Fetched: 10/24/2026

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18-28-1303.7 | Corpus