[Code of Federal Regulations] [Title 46, Volume 2] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR53.05-3] [Page 138] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 53_HEATING BOILERS--Table of Contents Subpart 53.05_Pressure Relieving Devices (Article 4) Sec. 53.05-3 Materials (modifies HG- 401.2). (a) Materials for valves must be in accordance with HG-401.2 of the ASME Code except nonmetallic materials may be used only for gaskets and packing.