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Material rating.

Municipal Code of Chicago § 18-28-1202.3
in effect
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18-28-1202.3 Material rating. Materials shall be rated for the operating temperature and pressure of the hydronic system. Materials shall be suitable for the type of fluid in the hydronic system.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2688990Fetched: 10/24/2026

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18-28-1202.3 | Corpus