U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 46Chapter IPart 52Subpart 52.25 - Subpart 52.25—Other Boiler Types
§ 52.25-1 - General.
§ 52.25-3 - Feedwater heaters (modifies PFH-1).
§ 52.25-5 - Miniature boilers (modifies PMB-1 through PMB-21).
§ 52.25-7 - Electric boilers (modifies PEB-1 through PEB-19).
§ 52.25-10 - Organic fluid vaporizer generators (modifies PVG-1 through PVG-12).
§ 52.25-15 - Fired thermal fluid heaters.
§ 52.25-20 - Exhaust gas boilers.
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