Each safety valve or safety relief valve shall be plainly marked by the manufacturer in such a way that the markings will not be obliterated in service. The markings may be stamped on the casing, or stamped or cast on a plate or plates securely fastened to the casing, and shall contain the following markings:
(The pipe size of the valve inlet.)
(The steam pressure at which it is to blow.)
(In accordance with sections 14-9.9 and 14-9.12 of this Subpart.)
(Capacity lift-distance the valve disk rises under the action of the steam when the valve is blowing under a pressure of three percent above the set pressure.)
N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-9.8