21 C.F.R. § 868.5870 Nonrebreathing valve.
Title 21 - Food and Drugs
(a) Identification. A nonrebreathing valve is a one-way valve that directs breathing gas flow to the patient and vents exhaled gases into the atmosphere. (b) Classification. Class II (performance standards).
Title 21: Food and Drugs
PART 868—ANESTHESIOLOGY DEVICES
Subpart F—Therapeutic Devices
§ 868.5870 Nonrebreathing valve.