StacksVerified U.S. regulatory reference

46 CFR §53.05-3

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Materials for valves must be in accordance with HG-401.2 of Section IV of the ASME BPVC (incorporated by reference; see § 53.01-1) except that nonmetallic materials may be used only for gaskets and packing.