CFR›Title 49›Subtitle B›Chapter I›Part 180›Subpart A ContainsSections 180.1–180.3CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Subpart A—General Sections 180.1 § 180.1 Purpose and scope. 180.2 § 180.2 Applicability. 180.3 § 180.3 General requirements. Next Appendix A to Part 180 Appendix A to Part 180—Internal Self-closing Stop Valve Emergency Closure Test for Liquefied Compressed Gases