46 CFR §162.018-6

1. (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. (1)The name or identifying trademark of the manufacturer.
   2. (2)Manufacturer's design or type number.
   3. (3)Size ____ inches. (The pipe size of the valve inlet).
   4. (4)Set pressure ____ p.s.i.
   5. (5)Rated capacity ____ cubic feet per minute of the gas or vapor (at 60 °F. and 14.7 p.s.i.a.).
   6. (6)Coast Guard approval number. The minimum wording for showing approval shall be “USCG 162.018/* *” or “USCG 162.018-* * ”.
2. (b)[Reserved]