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Title 42

Displaying title 42, up to date as of 7/13/2026. Title 42 was last amended 7/01/2026.
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Title 42Public HealthPart / Section
Chapter IPublic Health Service, Department of Health and Human Services2 – 199
Subchapter GOccupational Safety and Health Research and Related Activities80 – 88
Part 84Approval of Respiratory Protective Devices84.1 – 84.311
Subpart JSupplied-Air Respirators84.130 – 84.163
§ 84.130Supplied-air respirators; description.
§ 84.131Supplied-air respirators; required components.
§ 84.132Breathing tubes; minimum requirements.
§ 84.133Harnesses; installation and construction; minimum requirements.
§ 84.134Respirator containers; minimum requirements.
§ 84.135Half-mask facepieces, full facepieces, hoods, and helmets; fit; minimum requirements.
§ 84.136Facepieces, hoods, and helmets; eyepieces; minimum requirements.
§ 84.137Inhalation and exhalation valves; check valves; minimum requirements.
§ 84.138Head harnesses; minimum requirements.
§ 84.139Head and neck protection; supplied-air respirators; minimum requirements.
§ 84.140Air velocity and noise levels; hoods and helmets; minimum requirements.
§ 84.141Breathing gas; minimum requirements.
§ 84.142Air supply source; hand-operated or motor driven air blowers; Type A supplied-air respirators; minimum requirements.
§ 84.143Terminal fittings or chambers; Type B supplied-air respirators; minimum requirements.
§ 84.144Hand-operated blower test; minimum requirements.
§ 84.145Motor-operated blower test; minimum requirements.
§ 84.146Method of measuring the power and torque required to operate blowers.
§ 84.147Type B supplied-air respirator; minimum requirements.
§ 84.148Type C supplied-air respirator, continuous flow class; minimum requirements.
§ 84.149Type C supplied-air respirator, demand and pressure demand class; minimum requirements.
§ 84.150Air-supply line tests; minimum requirements.
§ 84.151Harness test; minimum requirements.
§ 84.152Breathing tube test; minimum requirements.
§ 84.153Airflow resistance test, Type A and Type AE supplied-air respirators; minimum requirements.
§ 84.154Airflow resistance test; Type B and Type BE supplied-air respirators; minimum requirements.
§ 84.155Airflow resistance test; Type C supplied-air respirator, continuous flow class and Type CE supplied-air respirator; minimum requirements.
§ 84.156Airflow resistance test; Type C supplied-air respirator, demand class; minimum requirements.
§ 84.157Airflow resistance test; Type C supplied-air respirator, pressure-demand class; minimum requirements.
§ 84.158Exhalation valve leakage test.
§ 84.159Man tests for gases and vapors; supplied-air respirators; general performance requirements.
§ 84.160Man test for gases and vapors; Type A and Type AE respirators; test requirements.
§ 84.161Man test for gases and vapors; Type B and Type BE respirators; test requirements.
§ 84.162Man test for gases and vapors; Type C respirators, continuous-flow class and Type CE supplied-air respirators; test requirements.
§ 84.163Man test for gases and vapors; Type C supplied-air respirators, demand and pressure-demand classes; test requirements.
Table to Subpart J of Part 84
Table to Subpart J of Part 84