ThisadapterisdesignedtoadapttheV-100,V-200,V-300andV-400AirRegulatingValvestoaccommodatetheBT-200andBT-222BreathingTubes.ThisadapterisdesignedtoadapttheV-100,V-200,V-300andV-400AirRegulatingValvestoaccommodatetheBT-200andBT-222BreathingTubes.3M)