BS EN 148-3:1999

This standard BS EN 148-3:1999 Respiratory protective devices: threads for facepieces is classified in these ICS categories:

• 13.340.30 Respiratory protective devices

This European Standard is applicable to self-contained compressed air breathing apparatus designed as positive pressure breathing apparatus.

This European Standard specifies a thread connection, M 45 × 3, which may optionally be used for facepieces for positive pressure breathing apparatus.

This European Standard does not apply to negative pressure breathing apparatus, to closed-circuit breathing apparatus or to diving equipment.

For facepieces in positive pressure breathing apparatus.