Air for use with compressed air airlines must conform to EN 12021 : 1999 or AS/NZS1715 : 1994 and must have a dew point sufficiently low to prevent internal freezing when apparatus is used in temperatures below 4°C.
Airline pressure must be between 5.0 and 9.0 bar (70 and 130 psi). Airflow supply capacity for a single airline is given.
Generally; each additional wearer
requires an extra 150 litres per minute, each additional pair of wearers requires
300 L/min for one wearer and 450 L/min for two wearers. All measurements must be taken at the wearer end of the airline.






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