Mallinckrodt One-Way Valve, 22F x 22M, a) Part #91346 (1 piece) and b) Part #50412 (pack of 5) Used with ventilators.
The One-Way Valve, 22F x 22M may stick and prevent or reduce the flow of ventilated air or oxygen.
Worldwide Distribution
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=Z-2450-2023