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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 ...
Surface-supplied diving includes diving using an umbilical with gas supply hose, lifeline strength member and communications cable, using a helmet or full-face mask, [4] and diving with a simple air line, also known as hookah equipment., [5] though regulatory legislation may in some jurisdictions exclude air line equipment from their definition ...
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 ...
Maurice Fernez (30 August 1885 – 31 January 1952) was a French inventor and pioneer in the field of underwater breathing apparatus, respirators and gas masks. He was pivotal in the transition of diving from the tethered diving helmet and suit of the nineteenth century to the free diving with self-contained equipment of the twentieth century.
Having a small internal orinasal mask inside the main mask, which separates the external respiratory passage from the rest of the mask interior. In a few models of full face mask a mouthpiece like those used on diving regulators is fitted, which has the same function as an oro-nasal mask, but can further reduce the volume of the external dead ...
An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., 2,216 to 5,500 psi (15,280 to 37,920 kPa), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness. [2]
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