[Code of Federal Regulations] [Title 42, Volume 1] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 42CFR84.71] [Page 519-520] TITLE 42--PUBLIC HEALTH CHAPTER I--PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES PART 84_APPROVAL OF RESPIRATORY PROTECTIVE DEVICES--Table of Contents Subpart H_Self-Contained Breathing Apparatus Sec. 84.71 Self-contained breathing apparatus; required components. (a) Each self-contained breathing apparatus described in Sec. 84.70 shall, where its design requires, contain the following component parts: (1) Facepiece or mouthpiece, and noseclip; [[Page 520]] (2) Respirable breathing gas container; (3) Supply of respirable breathing gas; (4) Gas pressure or liquid level gages; (5) Timer; (6) Remaining service life indicator or warning device; (7) Hand-operated valves; (8) Breathing bag; (9) Safety relief valve or safety relief system; and (10) Harness. (b) The components of each self-contained breathing apparatus shall meet the minimum construction requirements set forth in subpart G of this part.