SHIGEMATSU Breathing Apparatus K 30A

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Breathing apparatus ( LW 300) is a self-contained compressed-air breathing apparatus. It is designed on the open-circuit system in which the exhaled air is discharged from a wearer to the atmosphere.
Function

The breathing apparatus is to supply air to enable a wearer to work in an oxygen-deficient or toxic atmosphere.
Specifications

The overall weight of the breathing apparatus together with a fully charged cylinder is 11 kg. The breathing apparatus consists of the following components :

* a composite carbon fibre lightweight cylinder holding 1829 litres when fully charged to 300 bars;
* a regulator unit and pressure gauge manifold assembly;
* a facemask ( a positive pressure greater than ambient is maintained within the face mask to obviate inward leakage into mask during inhalation) ;
* a backplate and a harness.