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CEN
EN ISO 4126-4:2013

EN ISO 4126-4:2013

Current

Current

The latest, up-to-date edition.

Safety devices for protection against excessive pressure - Part 4: Pilot-operated safety valves (ISO 4126-4:2013)

Published date

07-17-2013

Publisher

Comite Europeen de Normalisation

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)

ISO 4126-4:2013 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 4 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature.ISO 4126-4:2013 is a product standard and it is not applicable to applications of pilot operated safety valves.

Committee
CEN/TC 69
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

BS EN 13648-1:2008 Cryogenic vessels. Safety devices for protection against excessive pressure Safety valves for cryogenic service
07/30158960 DC : 0 BS EN 13648-1 - CRYOGENIC VESSELS - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 1: SAFETY VALVES FOR CRYOGENIC SERVICE
I.S. EN 13648-1:2008 CRYOGENIC VESSELS - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 1: SAFETY VALVES FOR CRYOGENIC SERVICE
DIN EN 13648-1:2009-02 CRYOGENIC VESSELS - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 1: SAFETY VALVES FOR CRYOGENIC SERVICE
UNI EN 13648-1 : 2009 CRYOGENIC VESSELS - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 1: SAFETY VALVES FOR CRYOGENIC SERVICE
04/30112263 DC : 0 PREN ISO 4126-3 - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 3: SAFETY VALVES AND BURSTING DISC SAFETY DEVICES IN COMBINATION
EN 13648-1:2008 Cryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service

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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