Second Stage Regulator / Breathing Regulator

Second Stage Regulator / Breathing Regulator
A device that receives the reduced-pressure breathing air from the First Stage or Reducer and delivers it to the facepiece/mask at a pressure that is comfortable to breathe. Modern regulators produce air at a small positive-pressure of 2 to 3 psig that flows into the facepiece/mask allowing the user to have a constant flow of breathing air while also preventing contaminated air from entering the mask.