NEN-EN 148-3
Respiratory protective devices - Threads for facepieces - Thread connection M 45 × 3
| Organization: | NEN |
| Publication Date: | 1 August 1993 |
| Status: | inactive |
| ICS Code (Respiratory protective devices): | 13.340.30 |
scope:
This Standard applies to self-contained compressed air breathing apparatus designed as positive pressure breathing apparatus. This standard specifies a thread connection, M 45 x 3, which may optionally be used for facepieces for positive pressure breathing apparatus. This standard does not apply to negative pressure breathing apparatus, to closed-circuit breathing apparatus or to diving equipment.
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