Respiratory protective devices - Compressed air line breathing apparatus with demand valve - Part 2: Apparatus with a half mask at positive pressure - Requirements, testing, marking
This standard specifies minimum requirements for compressed air line breathing apparatus with demand valve for use with a half mask at positive pressure, as a respiratory protective device. Escape and diving apparatus, apparatus for firefighting and apparatus used in abrasive blasting operations without additional protective features are not covered by this standard, although certain requirements addressing the use in conjunction with escape apparatus and escape conditions are noted.