46 C.F.R. § 162.018-6 Marking.
Title 46 - Shipping
(a) Each safety relief valve shall be plainly marked by the manufacturer with the required data in such a way that the marking will not be obliterated in service. The marking may be stamped on the valve or stamped or cast on a plate securely fastened to the valve. The marking shall include the following data: (1) The name or identifying trademark of the manufacturer. (2) Manufacturer's design or type number. (3) Size __ inches. (The pipe size of the valve inlet). (4) Set pressure __ p.s.i. (5) Rated capacity __ cubic feet per minute of the gas or vapor (at 60 °F. and 14.7 p.s.i.a.). (6) Coast Guard approval number. The minimum wording for showing approval shall be “USCG 162.018/* *” or “USCG 162.018–* * * *Number to be assigned by the Commanding Officer, USCG Marine Safety Center. (b) [Reserved] [CGFR 68–82, 33 FR 18908, Dec. 18, 1968, as amended by USCG 2001–10224, 66 FR 48620, Sept. 21, 2001]
Title 46: Shipping
PART 162—ENGINEERING EQUIPMENT
Subpart 162.018—Safety Relief Valves, Liquefied Compressed Gas
§ 162.018-6 Marking.
