A scuba regulator is the foundational invention which makes diving
underwater possible. What does the regulator do? It reduces the pressure
of the air coming from the tank to the ambient water pressure and delivers
it to the mouth of the diver for breathing. The regulator has two parts:
• The first stage connects directly to the tank
• The second stage is the material directly behind the mouthpiece.
Both stages have important functions in regulating the flow of air
through the scuba system.
A scuba regulator lowers the air pressure flowing from the scuba tank.
The system is similar to a water tap. Without a tap, the water pressure
flows full force. By installing a tap, one can control the flow rate.
This is the same as a regulator. The first stage of a regulator allows
the air from the tank to flow at 140 psi instead of a gushing 2000 psi.
If one took apart a first-stage scuba regular, one would find pressure
chambers divided by valves or pistons. The first stage will change the
rate of air flow depending on the ambient pressure. It is similar to
a tap that turns itself up and down contingent on depth. At lower pressure
the first-stage regulator closes. At higher pressure the regulator opens