Positive pressure breathing apparatus Flite COV

The 3M™ Scott™ Flite COV (Change Over Valve) is a positive pressure supplied air respirator that also provides emergency respiratory protection and escape capability. This allows the user to enter hazardous atmospheres including those identified as Immediately Dangerous to Life or Health (IDLH). Suitable for providing respiratory protection in an IDLH (Immediately Dangerous to Life and Health) environment, the 3M™ Scott™ Flite COV is an open-circuit positive-pressure airline breathing apparatus that automatically provides emergency respiratory protection and escape capability if air flow from the primary supply is interrupted. Flite COV is fitted with a coupling which attaches to the automatic Change Over Valve (COV) and enables the connection to an independent air supply with an escape duration of 10 to 15 minutes depending on cylinder size. In the event of an interruption of air flow from the primary supply source, switchover to emergency cylinder air supply is immediately activated by the automatic changeover valve to facilitate safe egress. A warning whistle informs the user that the switch has been made to cylinder air. The airline coupling has a non-return valve so air from the attached cylinder cannot escape when the apparatus is detached from the airline supply. The escape cylinder utilises a locking hand wheel to remain in the open position and eliminate inadvertent shutting. The Flite COV can be used with the Vision 3 and Promask PP lines of face masks, even when used as an escape-only apparatus.