BS EN 148-1:2018:2019 Edition
$142.49
Respiratory protective devices. Threads for facepieces – Standard thread connection
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 24 |
This document specifies standard threads for respiratory protective devices and the description of test devices necessary for the assessment of some of the requirements. This document does not apply to diving equipment and to positive pressure demand breathing apparatus.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 6 | 1 Scope 2 Normative references 3 Terms, definitions and symbols 3.1 Terms and definitions |
| 7 | 3.2 Symbols 4 Requirements 4.1 Elements of thread connection 4.2 Sealing element 4.3 Geometry of thread profile 4.3.1 General |
| 8 | 4.3.2 Circularity of threads 4.3.2.1 General 4.3.2.2 Circularity of the male thread 4.3.2.3 Circularity of the female thread |
| 9 | 4.3.3 Male thread connector 4.3.3.1 General 4.3.3.2 Sealing surface 4.3.3.3 Dimensions |
| 11 | 4.3.4 Female thread connector 4.3.4.1 General 4.3.4.2 Dimensions |
| 12 | 4.3.5 Sealing element 4.3.6 Absence of geometric interference |
| 13 | 4.4 Physical and mechanical requirements of the thread connection 4.4.1 Resistance of the connectors to pull forces |
| 14 | 4.4.2 Physical and mechanical requirements of the sealing element 4.4.2.1 Hardness 4.4.2.2 Compression set 5 Testing 5.1 Inspection 5.2 Circularity of threads 5.2.1 Circularity of male threads |
| 15 | 5.2.2 Circularity of female threads 5.3 Geometry of male thread connector |
| 18 | 5.4 Geometry of female thread connector |
| 23 | 5.5 Beginning of the effective thread of the male connection 5.6 Resistance of the connectors to pull forces |
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