1. (a) The name or identifying trademark of the manufacturer.
2. (b) Manufacturer's design or type number.

3. (c) Size _ in. Seat diameter _ in.

   (The pipe size of the valve inlet.)

4. (d) Pressure lb.

   (The steam pressure at which it is to blow.)

5. (e) Year built, or alternatively, a coding may be marked on the valve such that the valve manufacturer can identify the year built.

6. (f) Capacity lb. per hr.

   (In accordance with sections 14-9.9 and 14-9.12 of this Subpart.)

7. (g) Capacity lift in.

   (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.)

8. (h) ASME symbol.

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: