U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 204Subpart B - Subpart B—Portable Air Compressors
§ 204.50 - Applicability.
§ 204.51 - Definitions.
§ 204.52 - Portable air compressor noise emission standard.
§ 204.54 - Test procedures.
§ 204.55 - Requirements.
§ 204.55-1 - General standards.
§ 204.55-2 - Requirements.
§ 204.55-3 - Configuration identification.
§ 204.55-4 - Labeling.
§ 204.56 - Testing by the Administrator.
§ 204.57 - Selective enforcement auditing.
§ 204.57-1 - Test request.
§ 204.57-2 - Test compressor sample selection.
§ 204.57-3 - Test compressor preparation.
§ 204.57-4 - Testing.
§ 204.57-5 - Reporting of test results.
§ 204.57-6 - Acceptance and rejection of batches.
§ 204.57-7 - Acceptance and rejection of batch sequence.
§ 204.57-8 - Continued testing.
§ 204.57-9 - Prohibition of distribution in commerce; manufacturer's remedy.
§ 204.58 - In-use requirements.
§ 204.58-1 - Warranty.
§ 204.58-2 - Tampering.
§ 204.58-3 - Instructions for maintenance, use, and repair.
§ 204.59 - Recall of non-complying compressors.
Appendix Appendix I - Appendix I to Part 204
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