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2. Pressure regulator - Wikipedia

   en.wikipedia.org/wiki/Pressure_regulator

   The conceptual difference is mainly in which side the feedback is taken from. A pressure regulator is a valve that controls the pressure of a fluid to a desired value, using negative feedback from the controlled pressure. Regulators are used for gases and liquids, and can be an integral device with a pressure setting, a restrictor and a sensor ...

3. Gas cylinder - Wikipedia

   en.wikipedia.org/wiki/Gas_cylinder

   Industrial compressed gas cylinders used for oxy-fuel welding and cutting of steel. A gas cylinder is a pressure vessel for storage and containment of gases at above atmospheric pressure. High- pressure gas cylinders are also called bottles. Inside the cylinder the stored contents may be in a state of compressed gas, vapor over liquid ...

4. Self-contained breathing apparatus - Wikipedia

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

   Some types are also referred to as a compressed air breathing apparatus (CABA) or simply breathing apparatus (BA). Unofficial names include air pack, air tank, oxygen cylinder or simply pack, terms used mostly in firefighting. If designed for use under water, it is also known as a scuba set (self-contained underwater breathing apparatus).

5. History of scuba diving - Wikipedia

   en.wikipedia.org/wiki/History_of_scuba_diving

   The continuous flow of air and the consequent low endurance of the apparatus limited the practical use of LePrieur's device. [11] Fernez had previously invented a noseclip, a mouthpiece fitted with a one-way valve for exhalation and diving goggles, and Le Prieur just added a manually-controlled regulator and a compressed air cylinder to those ...

6. Diving air compressor - Wikipedia

   en.wikipedia.org/wiki/Diving_air_compressor

   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- pressure air pure enough to be used as a hyperbaric breathing gas. A low pressure diving air compressor usually has a delivery pressure of up to 30 bar, which is regulated to suit the ...

7. Diving cylinder - Wikipedia

   en.wikipedia.org/wiki/Diving_cylinder

   A diving cylinder or diving gas cylinder is a gas cylinder used to store and transport high pressure gas used in diving operations. This may be breathing gas used with a scuba set, in which case the cylinder may also be referred to as a scuba cylinder, scuba tank or diving tank. When used for an emergency gas supply for surface supplied diving ...