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 K - Air-Purifying Particulate Respirators
  7. 42 CFR § 84.173
42 CFR § 84.173
Exhalation valve leakage test
June 11, 2020
CFR

(a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm water-column height while in a normal operating position.

(b) Leakage between the valve and valve seat must not exceed 30 mL per minute.

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§ 84.172 Airflow resistance test
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