Regulations last checked for updates: Nov 22, 2024

Title 42 - Public Health last revised: Nov 19, 2024
All TitlesTitle 42Chapter IPart 84Subpart K - Subpart K—Air-Purifying Particulate Respirators
View all text of Subpart K [§ 84.170 - § 84.181]
§ 84.173 - Exhalation valve leakage test.

(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.

authority: 29 U.S.C. 651
source: 60 FR 30355, June 8, 1995, unless otherwise noted.
cite as: 42 CFR 84.173
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