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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 46
Chapter I
Part 63
Subpart 63.25 - Subpart 63.25—Requirements for Specific Types of Automatic Auxiliary Boilers
§ 63.25-1 - Small automatic auxiliary boilers.
§ 63.25-3 - Electric hot water supply boilers.
§ 63.25-5 - Fired thermal fluid heaters.
§ 63.25-7 - Exhaust gas boilers.
§ 63.25-9 - Incinerators.
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