---
kind: "unit"
title: "42"
title_heading: "Public Health"
key: "chI/subchG/part84/subpartJ"
level: "subpart"
label: "Subpart J"
heading: "Supplied-Air Respirators"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/42/chI-subchG-part84-subpartJ"
sections_count: 34
---

# Subpart J — Supplied-Air Respirators

Title 42 C.F.R. — Public Health › Chapter I — Public Health Service, Department of Health and Human Services › Subchapter G — Occupational Safety and Health Research and Related Activities › Part 84 — Approval of Respiratory Protective Devices

## Sections

- [§84.130. Supplied-air respirators; description.](/cfr/42/84.130.md)
- [§84.131. Supplied-air respirators; required components.](/cfr/42/84.131.md)
- [§84.132. Breathing tubes; minimum requirements.](/cfr/42/84.132.md)
- [§84.133. Harnesses; installation and construction; minimum requirements.](/cfr/42/84.133.md)
- [§84.134. Respirator containers; minimum requirements.](/cfr/42/84.134.md)
- [§84.135. Half-mask facepieces, full facepieces, hoods, and helmets; fit; minimum requirements.](/cfr/42/84.135.md)
- [§84.136. Facepieces, hoods, and helmets; eyepieces; minimum requirements.](/cfr/42/84.136.md)
- [§84.137. Inhalation and exhalation valves; check valves; minimum requirements.](/cfr/42/84.137.md)
- [§84.138. Head harnesses; minimum requirements.](/cfr/42/84.138.md)
- [§84.139. Head and neck protection; supplied-air respirators; minimum requirements.](/cfr/42/84.139.md)
- [§84.140. Air velocity and noise levels; hoods and helmets; minimum requirements.](/cfr/42/84.140.md)
- [§84.141. Breathing gas; minimum requirements.](/cfr/42/84.141.md)
- [§84.142. Air supply source; hand-operated or motor driven air blowers; Type A supplied-air respirators; minimum requirements.](/cfr/42/84.142.md)
- [§84.143. Terminal fittings or chambers; Type B supplied-air respirators; minimum requirements.](/cfr/42/84.143.md)
- [§84.144. Hand-operated blower test; minimum requirements.](/cfr/42/84.144.md)
- [§84.145. Motor-operated blower test; minimum requirements.](/cfr/42/84.145.md)
- [§84.146. Method of measuring the power and torque required to operate blowers.](/cfr/42/84.146.md)
- [§84.147. Type B supplied-air respirator; minimum requirements.](/cfr/42/84.147.md)
- [§84.148. Type C supplied-air respirator, continuous flow class; minimum requirements.](/cfr/42/84.148.md)
- [§84.149. Type C supplied-air respirator, demand and pressure demand class; minimum requirements.](/cfr/42/84.149.md)
- [§84.150. Air-supply line tests; minimum requirements.](/cfr/42/84.150.md)
- [§84.151. Harness test; minimum requirements.](/cfr/42/84.151.md)
- [§84.152. Breathing tube test; minimum requirements.](/cfr/42/84.152.md)
- [§84.153. Airflow resistance test, Type A and Type AE supplied-air respirators; minimum requirements.](/cfr/42/84.153.md)
- [§84.154. Airflow resistance test; Type B and Type BE supplied-air respirators; minimum requirements.](/cfr/42/84.154.md)
- [§84.155. Airflow resistance test; Type C supplied-air respirator, continuous flow class and Type CE supplied-air respirator; minimum requirements.](/cfr/42/84.155.md)
- [§84.156. Airflow resistance test; Type C supplied-air respirator, demand class; minimum requirements.](/cfr/42/84.156.md)
- [§84.157. Airflow resistance test; Type C supplied-air respirator, pressure-demand class; minimum requirements.](/cfr/42/84.157.md)
- [§84.158. Exhalation valve leakage test.](/cfr/42/84.158.md)
- [§84.159. Man tests for gases and vapors; supplied-air respirators; general performance requirements.](/cfr/42/84.159.md)
- [§84.160. Man test for gases and vapors; Type A and Type AE respirators; test requirements.](/cfr/42/84.160.md)
- [§84.161. Man test for gases and vapors; Type B and Type BE respirators; test requirements.](/cfr/42/84.161.md)
- [§84.162. Man test for gases and vapors; Type C respirators, continuous-flow class and Type CE supplied-air respirators; test requirements.](/cfr/42/84.162.md)
- [§84.163. Man test for gases and vapors; Type C supplied-air respirators, demand and pressure-demand classes; test requirements.](/cfr/42/84.163.md)