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42 C.F.R. § 84.173 – Exhalation valve leakage test. | Midpage
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Code of Federal Regulations
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Subchapter G
Part 84
Subpart K
§ 84.173
42 C.F.R. § 84.173
Exhalation valve leakage test.
Effective Apr 14, 2020
(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.