BS EN ISO 4126-4:2013
Current
The latest, up-to-date edition.
Safety devices for protection against excessive pressure Pilot-operated safety valves
Hardcopy , PDF
English
31-07-2013
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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.
| Committee |
PSE/18/6
|
| DevelopmentNote |
Supersedes 99/704033 DC. (04/2004) Supersedes 09/30197346 DC. (07/2013)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO4126 specifies general requirements for pilot operated safety valves, irrespective of the fluid for which they are designed. In all cases, the operation is carried out by the fluid in the system to be protected.
It is applicable to pilot operated safety valves having a valve flow diameter of 4mm and above which are for use at set pressures of 0,1bar gauge and above. No limitation is placed on temperature.
This is a product standard and it is not applicable to applications of pilot operated safety valves.
| Standards | Relationship |
| ISO 4126-4:2013 | Identical |
| 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 |
| UNI EN ISO 4126-4 : 2013 | Identical |
| NBN EN ISO 4126-4 : 2013 | Identical |
| BS 1123:2006 | Fusible plugs for steam boilers and compressed air applications. Specification |
| BS PD5500(2006) : 2006 | SPECIFICATION FOR UNFIRED FUSION WELDED PRESSURE VESSELS |
| 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 |
| 1997/23/EC : 1997 | DIRECTIVE 97/23/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL OF 29 MAY 1997 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES CONCERNING PRESSURE EQUIPMENT |
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