StacksVerified U.S. regulatory reference

46 CFR §52.20-1

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Firetube boilers and parts thereof must be as indicated in PFT-1 through PFT-49 of Section I of the ASME BPVC (incorporated by reference; see § 52.01-1) except as noted otherwise in this subpart.