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  2. Saturation diving - Wikipedia

    en.wikipedia.org/wiki/Saturation_diving

    The gas then passes through the bell umbilical exhaust hose to the surface via a non-return valve and another water trap. When the gas enters the surface unit it goes through a coalescing water separator and micron particle filter, and a float valve, which protects the reclaim system from large volumes of water in the event of a leak at depth.

  3. Glossary of underwater diving terminology: D–G - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_underwater...

    Gas mixture used to dilute the oxygen in the loop of a closed circuit rebreather to a partial pressure suited to the depth. diluent flush. Also: "flush", "dil flush", "loop flush" See Rebreather diving#Diluent flush. Replacing the gas within the breathing loop of a rebreather by injecting diluent gas while venting the previous gas mix.

  4. Glossary of underwater diving terminology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_underwater...

    Underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to the order of a day at a time, either exposed to the ambient pressure or isolated by a pressure resistant suit, to interact with the underwater ...

  5. Decompression (diving) - Wikipedia

    en.wikipedia.org/wiki/Decompression_(diving)

    If the concentration of the inert gas in the breathing gas is reduced below that of any of the tissues, there is a tendency for gas to return from the tissues to the breathing gas. This is known as out-gassing, and occurs during decompression, when the reduction in ambient pressure reduces the partial pressure of the inert gas in the lungs ...

  6. Rebreather diving - Wikipedia

    en.wikipedia.org/wiki/Rebreather_diving

    Prevention: Pre-use preparation of the rebreather includes checking of seals and post-assembly leak checks. The positive pressure test checks that the assembled unit can maintain a slight internal positive pressure for a short period, which is an indication that gas does not leak out of the loop.

  7. Underwater diving - Wikipedia

    en.wikipedia.org/wiki/Underwater_diving

    The ability to dive and swim underwater while holding one's breath is considered a useful emergency skill, an important part of water sport and Navy safety training, and an enjoyable leisure activity. [38] Underwater diving without breathing apparatus can be categorised as underwater swimming, snorkelling and freediving. These categories ...

  8. What Does $4 Gas Mean for Ford? - AOL

    www.aol.com/news/2012-03-08-what-does-4-gas-mean...

    As they seem to do every spring, gas prices are rising: Here in the Northeast, prices for unleaded premium are already close to $4, and regular unleaded isn't far behind. Some parts of the country ...

  9. Scuba diving - Wikipedia

    en.wikipedia.org/wiki/Scuba_diving

    Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. [1] The word scuba is an acronym for "Self-Contained Underwater Breathing Apparatus" and was coined by Christian J. Lambertsen in a patent ...