BS EN 13077:2018
$102.76
Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 22 |
This European Standard specifies the characteristics and the requirements of air gap with non-circular overflow (unrestricted) Family A, Type B for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in water installations from pollution by backflow. This European Standard applies to air gaps in factory-assembled products and to constructed air gaps in situ, and defines requirements and methods to verify and ensure compliance with this European Standard during normal working use.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 5 | European foreword |
| 6 | Introduction |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Designation 5 Symbolization 6 Materials |
| 9 | 7 Requirements 7.1 General 7.2 Water inlet device |
| 10 | 7.3 Overflow arrangements |
| 12 | 7.4 Air gap distance A 7.4.1 Single supply 7.4.2 Multiple supplies |
| 13 | 7.4.3 Backflow/back pressure 7.5 Verification 7.5.1 General 7.5.2 Procedure for verification by test (see 7.4.1 a) or 7.4.2) |
| 14 | 7.5.3 Procedures for verification by calculation 8 Marking (not required for products constructed on-site) 9 Technical documents |
| 15 | Annex A (informative) Relationship between h and l for air gap Family A, Type B with rectangular overflow |
| 16 | Annex B (normative) Alternative overflow arrangements |
| 18 | Annex C (normative) Vacuum Test |
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BS EN 13077:2018 – TC:2020 Edition
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