Abstract: An oxygen delivery system which provides a visual and audible warning signal for system or oxygen flow failure. When pressure fitted tubing detaches, the audible whistle alarm indicates that the oxygen delivery system has become disconnected and the system has failed. An audible alarm signals that the oxygen delivery system has failed. A clear acrylic ball, located at the device's central area, contains a fan. The fan is mounted so that it turns in response to oxygen flow. The turning fan has blades which are color coded to visually indicate the delivery rate of oxygen to a patient. An anti-reflux mechanism, located at the proximal end of the device assures the elimination of back-flow pathogens into re-usable permanent equipment.