The regulator in scuba diving is the piece of equipment that enables you to breathe underwater. It is essential if you plan to scuba dive as, without it, you would only be able to stay underwater for less than 2 minutes!
It regulates the air you inhale by adjusting its pressure through a complex system. As we mentioned earlier, this is done in two stages, and the aim is to get the pressure of the air to an intermediate level (8-11 bars), and then bring it to ambient levels when you inhale.