A regulator for diving is simply a device that lowers the pressure in the diver's breathing gas. It most commonly reduces pressurized breathing gas to ambient pressure and delivers it to the diver. Diver regulators can also be used for controlling other gas pressures. Continue reading for more information. Below is a list of types of regulators.
First stage
Attached directly to the air tank of a diver, this is the first part of a dive regulator. It regulates water pressure before it enters the diver’s hose. The second stage includes a mouthpiece with purge valve. This valve delivers air directly to the diver's nose and removes waste gas when needed. Both of these stages are interconnected to ensure safe and comfortable diving. What are the differences between them? Learn more.
The first stage has two separate components, while the second stage is made of plastic. Both stages have a mechanical control system and a valve to regulate the amount of gas released. The air is supplied by the first stage. While the second stage can be used for secondary purposes, it provides air for the main stage. Connectors connect the first stage to a rebreather. This connector allows the diver, who is able to share air with his rebreather underwater, to be able to comfortably inhale.
Mouthpiece
A mouthpiece, which is used to control your diving regulator, is an integral part of the diving apparatus. It's a round, flattened tube that fits between your lips and teeth. It seals against your mouth when you breathe. To hold the mouthpiece in place you need to bite on both sides of the tabs. Mouthpieces cost very little and can be easily removed. So it is important that you find one that is right for you.
To withstand repeated use and long-term storage, a mouthpiece can be made from high-quality materials. Your mouthpiece's quality will save you time and money. Here's an overview of regulators and mouthpieces. Here you will find out more about diving regulator maintenance and how to care for it. You can also read our article How to clean your regulator's mouthpiece.
Exhaust valve
By manually depressing a lever or dial, the diver controls air flow through the regulator. The exhaust valve allows air to exit through the regulator, which is only one way. This valve closes when the diver is not inhaling and prevents water entering the regulator. The regulator's second stage includes a second air source. This could be a BCD inflation/deflation pipe.
In one embodiment, the diver's mouthpiece and regulator are in fluid communication with one another. The diver inhales using mouthpiece 26 a, and then exhales through regulator valve 24 d.
First stage, Diaphragm type
A dive regulator's diaphragm first stage is a lever-type device that sits inside an air chamber. The diaphragm presses in water pressure to activate it. This allows for a balance between the water and air pressure inside. This regulator is often used for scuba divers as it prevents water getting into contact with its internal mechanisms.
Diving regulators have two basic operational designs: diaphragm-type and piston-type. Both types of regulators sense water at ambient pressure and deliver air at a pressure similar to the surrounding body. Piston-type regulators are easier to use and more reliable, but have their limitations. Piston-type regulators are more susceptible to freezing conditions, as well as dirty water. Clear water is best for recreational diving.