§84.77. Inhalation and exhalation valves; minimum requirements.

42 C.F.R. § 84.77

(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.

Notes, amendments, and revision history

Authority: 29 U.S.C. 651 et seq.; 30 U.S.C. 3, 5, 7, 811, 842(h), 844.

Source: 60 FR 30355, June 8, 1995, unless otherwise noted.