Scubapro Air2 V GEN Alternate Inflation RegulatorAir2 V GEN Alternate Inflation Regulator An inflator reg combines a backup regulator with a BCD's buoyancy control system in one compact, at the ready unit. SCUBAPRO introduced the inflator reg concept to diving almost 30 years ago with the introduction of the AIR2 (short for Alternate Inflator Reg). Now in its 5th generation, the AIR2 delivers air as smoothly as most primary second stages, and unlike traditional dangling octos, it is always within