42 C.F.R. § 84.77

Current through September 30, 2024
Section 84.77 - Inhalation and exhalation valves; minimum requirements
(a) Inhalation and exhalation valves shall be provided where necessary and protected against damage and distortion.
(b) Exhalation valves shall be-
(1) Protected against external influence; and
(2) Designed and constructed to prevent inward leakage of contaminated air.

42 C.F.R. §84.77