1, positive pressure air breathing apparatus filled with pure compressed air.
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2, positive pressure air breathing apparatus is an isolated type of personal protective breathing equipment, it does not rely on environmental gases, by the compressed air in the cylinder after decompression suitable for human breathing gas, after breathing the gas through the exhalation valve atmosphere.
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3, positive pressure air breathing apparatus is a self-contained open air breathing apparatus, mainly used in fire, chemical, Marine, petroleum, smelting, factories and mines, laboratories and other places.
Air breathing apparatus, as the name suggests, is to breathe air.