{"data":{"id":"us/46-cfr-56.50-20","jurisdiction":"us","citation":"46 CFR 56.50-20","heading":"-20 Pressure relief piping.","body":"(a) General. There must be no intervening stop valves between the pressure vessel or piping system being protected and its protective device or devices, except as authorized by the Marine Safety Center.\n(b) Discharge lines. (Reproduces 122.6.2(d).) Discharge lines from pressure-relieving safety devices must be designed to facilitate drainage.\n(c) Stop valves. Stop valves between the safety or relief valve and the point of discharge are not permitted, except as specifically approved by the Marine Safety Center.\n(d) Reference. See also § 56.07-10(a) and (b) for specific requirements.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER F—MARINE ENGINEERING","PART 56—PIPING SYSTEMS AND APPURTENANCES","Subpart 56.50—Design Requirements Pertaining to Specific Systems"],"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":"558c8469c4a48c73b9d73c423e38c3196b9bcfb84391483ba2b3eccb9c5ffb24","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-56.50-15","next":"us/46-cfr-56.50-25"},"notice":"GroundRules: Original legal text. Not legal advice."}