The Innosonian America-S13107 Airway Valve Assembly is a critical OEM replacement component designed specifically for the ventilation system of the Brayden Adult CPR training manikin series. Installed within the manikin's oral and upper respiratory tract, this non-rebreathing valve mechanism controls airflow direction during rescue breath practice. It permits air to enter and expand the single-use artificial lung bag while preventing cross-contamination exhaust from returning into the mouth piece. Replacing worn or degraded valves maintains proper inflation mechanics, preserves hygienic isolation between students, and ensures optimal performance during BLS and ACLS CPR training.