1112.6 Actuation — 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) § 1112.6 · Effective January 1, 2026 · Official source: Building Standards Commission
Pressure-relief devices shall be direct pressure actuated or pilot operated. Pilot-operated pressurerelief valves shall be self-actuated, and the main valve shall open automatically at the set pressure and, where an essential part of the pilot fails, shall discharge its full rated capacity.
[ASHRAE 15:9.4.5]
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