Generally speaking, a diving regulator is a device that controls the pressure of breathing gas for a diver. It reduces the pressure of compressed breathing gas to an ambient level and delivers it directly to the diver. However, a dive regulator can also be used to control other gas pressures. For more information, please read on. Below is a list of types of regulators.
First stage
Attached to the diver's tank is the first stage of a regulator. It regulates water pressure before it enters the diver’s hose. The second stage, which contains a mouthpiece and purge valve, delivers air directly to the diver's mouth and removes waste gases when necessary. These two stages work in tandem to ensure a comfortable and safe dive. But what are their differences? Continue reading to find out more.
The first stage consists of two distinct parts. The second stage is made from a plastic material. Both stages can be operated mechanically and use a valve for controlling the release of gas. The first stage supplies the air for the initial stage while the second stage is for secondary use. A connector connects the first stage to the rebreather. This connector enables the diver to share air with the rebreather, allowing the diver to breathe underwater comfortably.
Mouthpiece
A mouthpiece is essential for your diving regulator. It is a straight-edged oval tube with a curving flange that fits between the teeth and your lips. 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.
A mouthpiece for your scuba regulator can be made of high-quality materials to withstand frequent use and long-term storage. Quality will save you both time and money. Here's a guide to mouthpieces and regulators. 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 pressing a lever or diaphragm, the diver controls the flow through the regulator. The regulator's exhaust valve, which is only one-way, allows for exhaled oxygen to escape. This valve remains closed when the diver is not exhaling, keeping water from entering the regulator. The regulator's second stage includes a second air source. This could be a BCD inflation/deflation pipe.
In one embodiment, regulator and diver's lips are in fluid contact. The diver inhales using mouthpiece 26 a, and then exhales through regulator valve 24 d.
First stage Diaphragm-type
A diaphragm-type dive regulator's first stage has two parts. It has a lever that is located within the air chamber, and a diaphragm which presses in when water pressure rises. This balances the air pressure and water inside. This regulator is often used for scuba divers as it prevents water getting into contact with its internal mechanisms.
There are two basic operational designs for diving regulators, the piston-type diaphragm or piston-type. Both types of regulators sense water at the ambient pressure and then deliver air at a pressure that is similar to the surrounding body. Piston-type regulators offer greater reliability and simplicity, but also have their drawbacks. Piston regulators can freeze and get dirty, which is bad for diving. However, most recreational diving occurs in clear water.