This is a downstream backup regulator that also provides you with easy-to-operate buoyancy control. The Inflator Regulator is positioned at the end of the buoyancy compensator hose, the ideal location for quick, efficient use. Because you use it as your power inflator, you always know where it's located. Plus, the Inflator Regulator cuts down on hose clutter because you use the same hose to supply both the power inflator and the backup regulator. The regulator features a dependable down-stream demand valve mechanism.