What are they and how do they work? Regulators are the key to diving . We would be pretty lost without them since they allow us to breathe high pressure compressed air at depth. How do they work? Regulators do what they say on the label they regulate the high pressure from the tank. They regulate the air pressure to match our surrounding pressure at any depth. So it s safe to say they are very important to use divers! Top tips When it comes to buying any regulator our advice is always safety fir...