StacksVerified U.S. regulatory reference

46 CFR §64.71

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A pressure relief device must be plainly and permanently marked with the—
  1. (a)Set pressure rating;
  2. (b)Rated flow capacity expressed as cubic feet of standard air (60 °F 14.7 psia) per minute and the pressure at which the flow capacity is determined;
  3. (c)Manufacturer's name and identifying number; and
  4. (d)Pipe size of inlet.