46 CFR 162.018-3 - Materials.

§ 162.018-3 Materials.
(a) The materials used in the manufacture of safety relief valves shall conform to the applicable requirements of subchapter F (Marine Engineering) of this chapter, except as otherwise specified in this subpart, and shall be resistant to the corrosive or other action of the liquefied compressed gas in the liquid or gas phase.
(b) All pressure containing external parts of valves must be constructed of materials melting above 1700 °F. for liquefied flammable gas service. Consideration of lower melting materials for internal pressure-containing parts will be given if their use provides significant improvement to the general operation of the valve. Flange gaskets shall be metal or spiral wound asbestos.
(c) Nonferrous materials shall not be used in the construction of valves for anhydrous ammonia or other service where susceptible to attack by the lading.
(d) The seats and disks shall be of suitable corrosion resistant material. Seats and disks of cast iron or malleable iron shall not be used. Springs shall be of best quality spring steel consistent with the design of the valve and the service requirement.
[CGFR 52-43, 17 FR 9540, Oct. 18, 1952, as amended by CGFR 68-82, 33 FR 18908, Dec. 18, 1968; CGD 72-206R, 38 FR 17230, June 29, 1973]

Title 46 published on 2013-10-01

no entries appear in the Federal Register after this date.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

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United States Code
Presidential Documents

Executive Order ... 12234

Executive Order ... 12777

Title 46 published on 2013-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 46 CFR 162 after this date.

  • 2014-01-13; vol. 79 # 8 - Monday, January 13, 2014
    1. 79 FR 2254 - Harmonization of Standards for Fire Protection, Detection, and Extinguishing Equipment
      GPO FDSys XML | Text
      DEPARTMENT OF HOMELAND SECURITY, Coast Guard
      Notice of proposed rulemaking.
      Comments and related material must either be submitted to our online docket via http://www.regulations.gov on or before April 14, 2014 or reach the Docket Management Facility by that date.
      33 CFR Parts 140, 145, 148, and 149