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A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1] The full face mask has several functions: it lets the diver see clearly underwater, it provides the diver's face with some ...
A full-face snorkel mask may be considered as combining the technology of tube snorkels and gas masks, and to a considerably lesser extent, of full-face scuba masks, which combine the technology of gas masks and scuba regulators, but the snorkel mask does not contain a pressure reducing mechanism for breathing gas, and is not intended for use ...
Underwater breathing apparatus can be classified as open circuit, semi-closed circuit, (including gas extenders) or closed circuit (including reclaim systems), based on whether any of the exhaled gas is recycled, and as self-contained or remotely supplied (usually surface-supplied, but also possibly from a lock-out submersible or an underwater habitat), depending on where the source of the ...
An open-circuit rescue or firefighting SCBA has a full-face mask, also called the face-piece, a demand regulator, air cylinder, pressure gauge, (sometimes with an integrated PASS device), and a harness with adjustable shoulder straps and waist belt which lets it be worn on the back. The air cylinder is commonly 4 liter, 6 liter, or 6.8 liter ...
Full face diving mask, watertight masks covering the eyes, nose and mouth, allowing the wearer to breathe underwater from a self-contained or surface-supplied breathing gas supply; Band mask, a heavy duty full-face diving mask for surface-supplied diving; Diving helmet, covering the entire head in a dome of air. By coverage
A prescription mask contains lenses mounted in the scuba mask frame or bonded to the original viewports. Diving helmets are often used for surface-supplied diving. They provide the same benefits as the full face mask but provide a very secure connection of the gas supply to the diver and additionally protect the head.
IDA-71 rebreather with breathing hoses and full face mask fitted. top view. IDA-71 rebreather with breathing hoses and full face mask fitted IDA-71 with lid of casing opened showing interior with counterlung, scrubber canisters and oxygen supply cylinder and regulator
Masks held in place by adjustable straps can be knocked off or moved from the correct position, allowing ambient atmosphere or water to flood in, and the loss of breathing gas. Full-face breathing masks are more easily dislodged due to their size, and need to be more securely supported, usually by 4 or 5 adjustable straps, connected at the back ...
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