Compressed airline breathing apparatus (CABA) with half mask

General Information

Compressed Airline Breathing Apparatus (CABA) With Half Mask

General information

  • Flow indicators and alarms are needed.
  • This breathing apparatus (BA) is designed to provide protection factors of 10 and 20.
  • This BA can be cleaned and reused many times, as recommended by the manufacturer.
  • It is suitable for a heavy work rate (heavy manual work requiring a lot of exertion and energy).
  • The BA may be worn continuously for more than 1 hour and may be used in oxygen-deficient atmospheres.
  • The BA is all right for medium work rate (work involving sustained hand and arm movements, or similar to brisk walking).
  • 'Constant flow' means that the manufacturer or user sets the air supply rate. This gives a constant flow rate at the selected air supply pressure.


  • Fit the straps as recommended.
  • Select the right size mask for each wearer.
  • Use only the BA manufacturer's connectors.
  • Ensure that adequate clean air supply is available.
  • Fit-testing for each wearer is required when using this RPE for the first time.
  • Ensure that the compressed air quality meets the minimum requirements of BS4275.
  • Ensure that wearers check the RPE fits correctly every time, as recommended by the manufacture.
  • Ensure that the airline is never deformed – the wearer's life may be at risk without an adequate air supply.


  • Modify any connector threads
  • Make DIY modifications to the RPE
  • Store in dirty areas between uses
  • Use solvents to clean the mask, straps or hose
  • Allow the airline to come into contact with solvents
  • Keep working if the airflow rate drops or any warning signals are activated
  • Use a light-duty airline hose where there is any potential for crushing by a passer-by, etc.

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