1. LawStack
  2. Title 42 - Public Health
  3. Chapter I - PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES
  4. Subchapter G - OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES
  5. Part 84 - APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
  6. Subpart J - Supplied-Air Respirators
  7. 42 CFR § 84.157
42 CFR § 84.157
Airflow resistance test; Type C supplied-air respirator, pressure-demand class; minimum requirements
June 11, 2020
CFR

(a) The static pressure in the facepiece shall not exceed 38 mm. (1.5 inches) of water-column height.

(b) The pressure in the facepiece shall not fall below atmospheric at inhalation airflows less than 115 liters (4 cubic feet) per minute.

(c) The exhalation resistance to a flow of air at a rate of 85 liters (3 cubic feet) per minute shall not exceed the static pressure in the facepiece by more than 51 mm. (2 inches) of water-column height.

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§ 84.154 Airflow resistance test; Type B and Type BE supplied-air respirators; minimum requirements
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§ 84.158 Exhalation valve leakage test

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