42 CFR 84.157 - Airflow resistance test; Type C supplied-air respirator, pressure-demand class; minimum requirements.

Regulations last checked for updates: Nov 22, 2024

Title 42 - Public Health last revised: Nov 19, 2024

View all text of Subpart J [§ 84.130 - § 84.163]

§ 84.157 - Airflow resistance test; Type C supplied-air respirator, pressure-demand class; minimum requirements.

(a) The static pressure in the facepiece shall not exceed 38 mm. (1.5 inches) of water-column height.

(b) The pressure in the facepiece shall not fall below atmospheric at inhalation airflows less than 115 liters (4 cubic feet) per minute.

(c) The exhalation resistance to a flow of air at a rate of 85 liters (3 cubic feet) per minute shall not exceed the static pressure in the facepiece by more than 51 mm. (2 inches) of water-column height.

authority: 29 U.S.C. 651

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

cite as: 42 CFR 84.157