A diving regulator, in general, is a device that regulates the pressure of breathing gas for divers. A regulator typically reduces pressure in the breathing gas and delivers it to a diver. You can also use a dive regulator to regulate other gas pressures. You can find out more about this regulator by reading the following. Listed below are some types of regulators:
First stage
The diver's water tank houses the first stage of a diving regulator. The regulator regulates air pressure and then releases it into 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. Both stages work together to provide safe and comfortable diving. But what are their differences? Read on to learn more.
The first stage is comprised of two separate parts, and the second is made of a plastic material. Both stages are mechanically controlled, and each stage has a control valve to regulate the amount gas released. The first stage supplies the air for the initial stage while the second stage is for secondary use. The first stage is connected to the rebreather by means of a connector. The connector allows the diver and rebreather to share air, allowing them to both breathe underwater comfortably.
Mouthpiece
The mouthpiece of your diving regulator is an essential part of your apparatus. It is a flattened oval tube with a curved flange that fits between your teeth and lips. It seals against your mouth when you breathe. The mouthpiece has two tabs on either side that you bite consistently to keep it in place. Mouthpieces are inexpensive and easily replaceable, so it's important to choose one that fits your specific mouth and personality.
You can make your mouthpiece from high-quality materials for long-term storage or frequent use. Its quality will not only save you from headaches, but it will also save you money on replacement parts. Here is a guide on regulators and mouthpieces. You'll also learn more about dive regulator maintenance, including how to care for your regulator. For more information on maintaining your regulator's mouthpiece, read the article Do you pick it up while diving.
Exhaust valve
By manually depressing a lever or dial, the diver controls air flow through the regulator. Exhaled air exits the regulator through the exhaust valve, which is one-way. This valve remains closed when the diver is not exhaling, keeping water from entering the regulator. The regulator's second stage is an additional air source. This can be a BCD inflation/deflation tube.
In one embodiment, the diver’s regulator and mouthpiece are in fluid communication. The diver inhales via mouthpiece 26 a and breathes through the re-located exhaust tube 24 d.
First stage, Diaphragm type
The diaphragm type first stage of a dive regulator is composed of two main components: a lever which sits inside the air chamber and a dial that presses in when the water pressure increases. This allows for an equilibrium between the water pressure outside and inside. This regulator prevents water vapor from entering its internal mechanism and is used often by scuba divers.
There are two basic operational designs for diving regulators, the piston-type diaphragm or 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 offer greater reliability and simplicity, but also have their drawbacks. Piston-type regulators may be susceptible to freezing conditions or dirty water. However, most recreational diving occurs in clear water.