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Demand helmet; DESCO air hat; Diffuser (breathing set part) Dive/surface valve; Diver's umbilical; Diving cylinder; Diving regulator; Downstream scuba manifold; Draeger DM20 oxygen rebreather system; Dräger DM20 oxygen rebreather system; Dräger DM40 mixed gas rebreather system; Dräger Modell 1915 Bubikopf helmet; Dry suit inflation hose
The usual meaning of diving helmet is a piece of diving equipment that encases the user's head and delivers breathing gas to the diver, but the term "diving helmet", or "cave diving helmet" may also refer to a safety helmet like a climbing helmet or caving helmet that covers the top and back of the head, but is not sealed. These may be worn ...
Yoke (diving helmet) This page was last edited on 15 February 2024, at 21:00 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...
Lightweight demand helmets are rigid structures which fully enclose the head of the diver and supply breathing gas "on demand". The flow of gas from the supply line is activated by inhalation reducing the pressure in the helmet to slightly below ambient, and a diaphragm in the demand valve senses this pressure difference and moves a lever to open the valve to allow breathing gas to flow into ...
Advanced Diving Equipment Company – American manufacturer of surface supplied diving helmets – Swindell free-flow open circuit air helmets. [1]Aeris (dive gear) – American brand of scuba equipment Originally a brand of American Underwater Products, founded in 1998, and merged into a sister-brand, Oceanic, in 2014.
The demand valves used on surface-supplied diving helmets and full-face masks work on exactly the same principles as the second stage scuba demand valves of single hose scuba, and in some cases may be the same unit with a different housing compatible with the specific mask or helmet. The demand valves used with surface supplied gas will ...
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]
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 ...