A diving regulator is basically a device which regulates the breathing gas pressure for a diver. The regulator reduces the pressure of pressurized gas to ambient pressure, and then delivers it to the diver. Diver regulators can also be used for controlling other gas pressures. For more information, please read on. Below are some examples of regulators.
First stage
Attached to the diver's tank is the first stage of a regulator. It regulates air pressure prior to it entering the diver's breathing hose. The second stage contains a purge and mouthpiece that delivers air directly from the regulator to the diver's mouth. These two stages work together to ensure a safe and comfortable dive. What are their differences? Read on to learn more.
The first stage is composed of two parts and the second of a plastic material. Each stage is mechanically controlled and has a valve that regulates the gas release. The first stage supplies air to the first stage and the second stage is used for secondary purposes. A connector connects the first stage to the rebreather. This connector allows the diver's air to be shared with the rebreather.
Mouthpiece
A mouthpiece for your dive regulator is a vital part of your diving apparatus. It's a round, flattened tube that fits between your lips and teeth. It seals against the inside your mouth and allows you to breathe. You can bite the tabs on either end of the mouthpiece to hold it in place. Mouthpieces can be easily replaced and are cheap so make sure you choose the right one for your mouth.
You can make your mouthpiece from high-quality materials for long-term storage or frequent use. Your mouthpiece's quality will save you time and money. Here is a guide on regulators and mouthpieces. This guide will also provide information about how to maintain your regulator. Our article, Do you pick up trash while diving? will provide more information about maintaining your regulator's lips.
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 closes when the diver is not inhaling and prevents water entering the regulator. The second stage of the regulator is a second air source, which can be a BCD inflation/deflation hose.
In one embodiment, the diver’s regulator and mouthpiece are in fluid communication. The diver inhales through mouthpiece 26a, while breathing through the repositioned exhaust valve 24d.
First stage: Diaphragmtype
The diaphragm, or first stage, of a dive controller is made up of two parts. A lever sits within the chamber and a diaphragm. This diaphragm pushes in when there is more water pressure. 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.
Two basic designs are available for diving regulators: piston-type or diaphragm-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 more reliable and simple, but they have their disadvantages. Piston-type regulators may be susceptible to freezing conditions or dirty water. However, most recreational diving occurs in clear water.