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2. Diving air compressor - Wikipedia

   en.wikipedia.org/wiki/Diving_air_compressor

   A small scuba filling and blending station supplied by a compressor and storage bank A low pressure breathing air compressor used for surface supplied diving at the surface control point A diving air compressor is a breathing air compressor that can provide breathing air directly to a surface-supplied diver, or fill diving cylinders with high ...

3. The 10 Best Air Compressors for Pros and DIYers - AOL

   www.aol.com/lifestyle/10-best-air-compressors...

   This mid-size, 2.5-gallon compact compressor has two side-stacked air tanks and a 1.5-hp induction pump motor that goes from zero to 135 psi in just 82 seconds.

4. Gas blending for scuba diving - Wikipedia

   en.wikipedia.org/wiki/Gas_blending_for_scuba_diving

   Gas blending for scuba diving (or gas mixing) is the filling of diving cylinders with non-air breathing gases such as nitrox, trimix and heliox. Use of these gases is generally intended to improve overall safety of the planned dive, by reducing the risk of decompression sickness and/or nitrogen narcosis , and may improve ease of breathing .

5. Compressor - Wikipedia

   en.wikipedia.org/wiki/Compressor

   A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. Many compressors can be staged, that is, the gas is compressed several times in steps or stages, to increase discharge pressure.

6. Underwater breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Underwater_breathing_apparatus

   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 ...

7. Self-contained breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Self-contained_breathing...

   Elastomeric masks linked to backpack air tanks: self-contained breathing apparatus, worn by firefighters advancing with a firehose. There are two major application areas for SCBA: firefighting, and industrial use in confined spaces. [16] For SCBAs used in firefighting, manufacturers typically prioritize fire resistance and weight reduction over ...