1314.4 Size of Piping Outlets — 2025 California Mechanical Code
California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-09-25 · California
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Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Mechanical Code (Title 24, Part 4) § 1314.4 · Effective January 1, 2026 · Official source: Building Standards Commission
The size of the supply piping outlet for a gas appliance shall be not less than 1/2 of an inch (15 mm). The size of a piping outlet for a mobile home shall be not less than 3/4 of an inch (20 mm).
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