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A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. 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]
There are two basic categories of diving mask: The half mask covers the eyes and nose, and the full face mask covers eyes, nose and mouth, and therefore includes a part of the breathing apparatus. The half-mask is described here. [8]: 4–17 Diving masks may have a single, durable, tempered glass faceplate, or two lenses in front of the eyes ...
The Full Spectrum Battle Equipment kit includes a quick-release ballistic vest, integrated breathing and flotation devices, as well as load bearing equipment. [2] The Combat Integrated Releasable Armor System (CIRAS) has replaced the FSBE AAV for some units. The PRU-70 for aviators and aircrew combines body armor, survival vest, and flotation ...
Bailout to open circuit by opening a bailout demand valve already connected to the full face mask, or by nose-breathing in some cases. This also requires no removal of the mouthpiece. It requires a suitable model full-face mask with a secondary port for the demand valve. The procedure requires the supply valve on the open circuit demand valve ...
The 1950s US Divers "Marino" hybrid comprised a single snorkel mask with eye and nose coverage and a separate snorkel for the mouth. [4] Full-face snorkel masks use an integral snorkel with separate channels for intake and exhaled gases theoretically ensuring the user is always breathing untainted fresh air whatever the respiratory effort.
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 ...