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.
46 C.F.R. §§53.05-3
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.
46 C.F.R. §§53.05-3