UNI EN ISO 4126-4 : 2013
Current
The latest, up-to-date edition.
SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 4: PILOT-OPERATED SAFETY VALVES
19-09-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Design
6 Production testing
7 Type testing
8 Determination of pilot operated safety valve
performance
9 Sizing of pilot operated safety valves
10 Marking and sealing
Bibliography
Annex ZA (informative) - Relationship between this
International Standard and the Essential
Requirements of EU Directive 97/23/EC (PED)
Defines general requirements for pilot operated safety valves, irrespective of the fluid for which they are designed.
| DocumentType |
Standard
|
| PublisherName |
Ente Nazionale Italiano di Unificazione (UNI)
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| DIN EN ISO 4126-4:2013-12 | Identical |
| SN EN ISO 4126-4 : 2013 | Identical |
| NEN EN ISO 4126-4 : 2013 | Identical |
| NS EN ISO 4126-4 : 2013 | Identical |
| EN ISO 4126-4:2013 | Identical |
| I.S. EN ISO 4126-4:2013 | Identical |
| UNE-EN ISO 4126-4:2014 | Identical |
| NF EN ISO 4126-4 : 2013 | Identical |
| BS EN ISO 4126-4:2013 | Identical |
| NBN EN ISO 4126-4 : 2013 | Identical |
| ISO 4126-4:2013 | Identical |
| UNI/TR 11507 : 2013 | MAINTENANCE OF DEVICES FOR DIRECT PRESSURE LIMITATION (SAFETY VALVES) |
| UNI/TS 11325-6 : 2014 | PRESSURE EQUIPMENT - PUTTING INTO SERVICE AND USE OF PRESSURE EQUIPMENT AND ASSEMBLIES - PART 6: PUTTING INTO SERVICE OF PRESSURE EQUIPMENT AND ASSEMBLIES |
| ISO 4126-7:2013 | Safety devices for protection against excessive pressure — Part 7: Common data |
| ISO 6708:1995 | Pipework components Definition and selection of DN (nominal size) |
| ASME B16.34 : 2017 | VALVES - FLANGED, THREADED, AND WELDING END |
| API 527 : 2014 | SEAT TIGHTNESS OF PRESSURE RELIEF VALVES |
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