1112.7 Stop Valves Prohibited — 2025 California Mechanical Code
California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-09-25 · California
CBSC: official editions, supplements and errata
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) § 1112.7 · Effective January 1, 2026 · Official source: Building Standards Commission
Stop valves shall not be located between a pressure-relief device and parts of the system protected thereby. A three-way valve, used in conjunction with the dual relief valve in accordance with Section
1113.6, shall not be considered a stop valve. [ASHRAE 15:9.4.6]
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