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2. Gas cylinder - Wikipedia

   en.wikipedia.org/wiki/Gas_cylinder

   ISO 9809-3: Gas Cylinders–Refillable Seamless Steel Gas Cylinders–Design, Construction and Testing–Part 3: Normalized Steel Cylinders; EN ISO 11120 – Gas cylinders. Refillable seamless steel tubes of water capacity between 150 l and 3000 l. Design, construction and testing (ISO 11120:2015) [33] EN 1975 – Transportable gas cylinders.

3. Pressure regulator - Wikipedia

   en.wikipedia.org/wiki/Pressure_regulator

   Air compressors are used in industrial, commercial, and home workshop environments to perform an assortment of jobs including blowing things clean; running air powered tools; and inflating things like tires, balls, etc. Regulators are often used to adjust the pressure coming out of an air receiver (tank) to match what is needed for the task.

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. High altitude breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/High_altitude_breathing...

   Russian manufacturer Poisk has supplied breathing apparatus since 1982, using a small and lightweight titanium and kevlar filament wound cylinder of 3.5 kg with an endurance of 6 hours at 2 litres per minute, with regulators that could be adjusted in increments of 0.25 litres per minute up to 4 litres per minute. [31]

6. Supplied-air respirator - Wikipedia

   en.wikipedia.org/wiki/Supplied-air_respirator

   [3] [4] It is important that they deliver good air; contaminants (which may also be introduced by faulty operation of the machinery) can be dangerous. [3] If the air-supply line is cut or pinched shut, the user will not have any air to breathe. SAR users therefore often carry a small backup air tank (called an auxiliary escape cylinder [4]).

7. Cascade filling system - Wikipedia

   en.wikipedia.org/wiki/Cascade_filling_system

   The cascade system allows small cylinders to be filled without a compressor. In addition, a cascade system is useful as a reservoir to allow a low-capacity compressor to meet the demand of filling several small cylinders in close succession, with longer intermediate periods during which the storage cylinders can be recharged.