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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.
The invention revolutionised autonomous underwater diving by providing a compact, reliable system capable of a greater depth range and endurance than its precursors, and was a major factor influencing the development of recreational scuba diving after WWII. The twin-hose Aqua-Lung demand regulator is the foundation of all modern scuba regulators.
A Dräger two-stage twin-hose regulator Beuchat "Souplair" single stage twin hose regulator Twin 7l cylinders with Draeger harness, valves, manifold and regulator from c. 1965 Duckbill exhaust valve for Draeger twin hose regulator. The "twin", "double" or "two" hose configuration of scuba demand valve was the first in general use. [16]
The Mares product range includes the following products: [2] Diving Regulators - Both first stage and second stage regulators; Dive computers; Instruments - compasses, pressure gauges, Personal computer interfaces for their dive computers and watches
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.
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A rubber O-ring forms a seal between the metal of the cylinder valve and the metal of the diving regulator. Fluoroelastomer (e.g. viton) O-rings may be used with cylinders filled with oxygen-rich breathing gas mixtures to reduce the risk of fire. [18] There are two basic types of cylinder valve to regulator connection in general use for scuba ...
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