The Sotair™ device is a universal safety accessory device that is compatible with all manual resuscitators and airway interfaces that have standard ISO 5356-1:2015 15/22 mm connections. The device connects in-line between the bag and the mask, endotracheal tube or other applicable adjunct. In use, when the provider squeezes the bag too forcefully, crossing the maximum flow-limiting safety threshold of air delivered (~ 55 liters-per-minute), the Sotair device’s valve will instantaneously close. The valve remains closed as long as the user is maintaining the force of an unsafe squeeze on the bag. Once the provider releases the grip on the resuscitator bag, the valve will rapidly return to its resting position allowing the user to resume resuscitation at a safe flow.