{"data":{"id":"us/46-cfr-197.310","jurisdiction":"us","citation":"46 CFR 197.310","heading":"Air compressor system.","body":"A compressor used to supply breathing air to a diver must have—\n(a) A volume tank that is—\n(1) Built and stamped in accordance with section VIII, division 1 of the ASME Code with—\n(i) A check valve on the inlet side;\n(ii) A pressure gage;\n(iii) A relief valve; and\n(iv) A drain valve; and\n(2) Tested after every repair, modification, or alteration to the pressure boundaries as required by § 197.462;\n(b) Intakes that are located away from areas containing exhaust fumes of internal combustion engines or other hazardous contaminants;\n(c) An efficient filtration system; and\n(d) Slow-opening shut-off valves when the maximum allowable working pressure of the system exceeds 500 psig.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER V—MARINE OCCUPATIONAL SAFETY AND HEALTH STANDARDS","PART 197—GENERAL PROVISIONS","Subpart B—Commercial Diving Operations"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"b11f5e4d666d02cf183499aad88bc6da99c37a6675dbd32b4a82c8659401b92b","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-197.300","next":"us/46-cfr-197.312"},"notice":"GroundRules: Original legal text. Not legal advice."}