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2. Diving regulator - Wikipedia

   en.wikipedia.org/wiki/Diving_regulator

   A diving regulator or underwater diving regulator is a pressure regulator that controls the pressure of breathing gas for underwater diving.The most commonly recognised application is to reduce pressurized breathing gas to ambient pressure and deliver it to the diver, but there are also other types of gas pressure regulator used for diving applications.

3. Aqua-Lung - Wikipedia

   en.wikipedia.org/wiki/Aqua-Lung

   SCUBA became the generic term for any type of self-contained breathing set for diving, and soon the acronym SCUBA became a common noun – "scuba" – all in lower-case. "Scuba" was a trademark for a time – used by Healthways, now known as Scubapro – one of the competitors of U.S. Divers. [citation needed]

4. Dacor (scuba diving) - Wikipedia

   en.wikipedia.org/wiki/Dacor_(scuba_diving)

   DACOR Corporation was a former American manufacturer of scuba diving equipment which was founded in 1954 by Sam Davison Jr. in Evanston, Illinois as "The Davison Corporation". Since its foundation. DACOR was one of the five early American diving equipment manufacturers. Together, they were: DACOR; U.S. Divers (Now Aqua-Lung)

5. Mechanism of diving regulators - Wikipedia

   en.wikipedia.org/wiki/Mechanism_of_diving_regulators

   With most second stage scuba regulators, ice forms and builds up on internal components such as the valve actuating lever, valve housing tube, and the inlet valve poppet, the gap between the lever and fulcrum point is reduced and eventually filled by the build-up of ice that forms, preventing the inlet from fully closing during exhalation Once ...

6. Diving cylinder - Wikipedia

   en.wikipedia.org/wiki/Diving_cylinder

   Empty scuba tanks or scuba tanks pressurized at less than 200 kPa are not restricted as hazardous materials. [148] Scuba cylinders are only allowed in checked baggage or as a carry-on if the cylinder valve is completely disconnected from the cylinder and the cylinder has an open end to allow for a visual inspection inside. [149]

7. Porpoise (scuba gear) - Wikipedia

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

   It was the origin of single-hose scuba regulators. It was much used by Australian scuba divers. The picture shows the CA-1, a set with one cylinder with its valve at the bottom, strapped directly to the back with rucksack-type straps without backpack plate or buoyancy aid, with a single-hose regulator-mouthpiece which could be strapped in. The ...