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2. Hose reel - Wikipedia

   en.wikipedia.org/wiki/Hose_reel

   The most common styles of hose reels are spring driven (which is self retracting), hand crank, or motor driven. Hose reels are categorized by the diameter and length of the hose they hold, the pressure rating and the rewind method. Hose reels can either be fixed in a permanent location, like wall mounted hose reels, or they can be portable and ...

3. Porpoise (scuba gear) - Wikipedia

   en.wikipedia.org/wiki/Porpoise_(scuba_gear)

   An example of the world's first commercially available, single hose SCUBA unit designed and manufactured by Ted Eldred in 1952. Porpoise is a tradename for scuba developed by Ted Eldred in Australia and made there from the late 1940s onwards. The first Porpoise was a closed circuit oxygen rebreather, and the following models were all single ...

4. Vintage scuba - Wikipedia

   en.wikipedia.org/wiki/Vintage_scuba

   Draeger twin hose two stage demand regulator. The most striking and well recognized example of vintage scuba gear is the twin-hose or double hose regulator, a popular style of regulator in the early years of scuba diving, since Jacques-Yves Cousteau and Emile Gagnan pioneered the first such design, the C45 Scaphandre Autonome, which was marketed in the USA (along with a tank and harness) as ...

5. Sidemount diving - Wikipedia

   en.wikipedia.org/wiki/Sidemount_diving

   The UTD Z-system provides an approach to emulate back-mounted Hogarthian configuration by quick-connecting two primary gas supply sidemount cylinders to a manifold block mounted behind the shoulders on the Z-system harness, from which long hose primary and necklace secondary demand valves are supplied, reducing the demand valve arrangement to a ...

6. Surface-supplied diving equipment - Wikipedia

   en.wikipedia.org/wiki/Surface-supplied_diving...

   The systems used to supply air through the hose to a demand valve mouthpiece, are either 12-volt electrical air pumps, gasoline engine powered low-pressure compressors, or floating scuba cylinders with high pressure regulators. These hookah diving systems usually limit the hose length to allow less than 7 metres depth.

7. Halcyon RB80 - Wikipedia

   en.wikipedia.org/wiki/Halcyon_RB80

   The Halcyon RB80 is a non-depth-compensated passive addition semi-closed circuit rebreather of similar external dimensions to a standard AL80 scuba cylinder (11-litre, 207-bar aluminium cylinder, 185 mm diameter and about 660 mm long).