EN ISO 14723:2009

SLOVENSKI STANDARD
01-september-2009
1DGRPHãþD
SIST EN ISO 14723:2004
Industrija nafte in zemeljskega plina - Transportni cevovodni sistemi - Armature
podvodnih cevovodov (ISO 14723:2009)
Petroleum and natural gas industries - Pipeline transportation systems - Subsea pipeline
valves (ISO 14723:2009)
Erdöl- und Erdgasindustrie - Rohrleitungstransportsysteme - Unterwasserarmaturen (ISO
14723:2009)
Industries du pétrole et du gaz naturel - Systèmes de transport par conduites - Vannes
de conduites immergées (ISO 14723:2009)
Ta slovenski standard je istoveten z: EN ISO 14723:2009
ICS:
23.060.01 Ventili na splošno Valves in general
75.200 2SUHPD]DVNODGLãþHQMH Petroleum products and
QDIWHQDIWQLKSURL]YRGRYLQ natural gas handling
]HPHOMVNHJDSOLQD equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 14723
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2009
ICS 75.200 Supersedes EN ISO 14723:2001
English Version
Petroleum and natural gas industries - Pipeline transportation
systems - Subsea pipeline valves (ISO 14723:2009)
Industries du pétrole et du gaz naturel - Systèmes de Erdöl- und Erdgasindustrie - Rohrleitungstransportsysteme
transport par conduites - Vannes de conduites immergées - Unterwasserarmaturen (ISO 14723:2009)
(ISO 14723:2009)
This European Standard was approved by CEN on 20 May 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14723:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 14723:2009) has been prepared by Technical Committee ISO/TC 67 "Materials,
equipment and offshore structures for petroleum, petrochemical and natural gas industries" in collaboration
with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum,
petrochemical and natural gas industries” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2009, and conflicting national standards shall be withdrawn
at the latest by December 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 14723:2001.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 14723:2009 has been approved by CEN as a EN ISO 14723:2009 without any modification.

INTERNATIONAL ISO
STANDARD 14723
Second edition
2009-06-15
Petroleum and natural gas industries —
Pipeline transportation systems —
Subsea pipeline valves
Industries du pétrole et du gaz naturel — Systèmes de transport par
conduites — Vannes de conduites immergées

Reference number
ISO 14723:2009(E)
©
ISO 2009
ISO 14723:2009(E)
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ISO 14723:2009(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope . 1
2 Conformance. 1
2.1 Rounding . 1
2.2 Compliance to standard. 1
3 Normative references . 1
4 Terms and definitions. 3
5 Symbols and abbreviated terms . 8
5.1 Symbols . 8
5.2 Abbreviated terms . 8
6 Valve types and configurations. 9
6.1 Valve types . 9
6.2 Valve configurations. 10
7 Design . 25
7.1 Design codes and calculations . 25
7.2 Pressure and temperature ratings . 25
7.3 Cavity relief. 26
7.4 External pressure and loads. 26
7.5 Sizes. 26
7.6 Face-to-face and end-to-end dimensions. 26
7.7 Valve operation . 36
7.8 Pigging. 36
7.9 Valve ends . 37
7.10 Bypasses, drains and vents . 38
7.11 Manual actuator-manual operator — Handwheels and wrenches. 38
7.12 Locking devices . 39
7.13 Position of the obturator. 39
7.14 Position indicators. 39
7.15 Travel stops. 39
7.16 ROV interface . 39
7.17 Sealant injection . 39
7.18 Lifting points and supports . 40
7.19 Valve operator interface. 40
7.20 Drive trains . 41
7.21 Stem retention. 41
7.22 Stem/shaft protector. 41
7.23 Hydraulic lock . 42
7.24 Corrosion/erosion. 42
7.25 Hyperbaric performance . 42
7.26 Design documents. 42
7.27 Design document review . 42
8 Materials . 42
8.1 Material specification . 42
8.2 Service compatibility. 43
8.3 Forged parts . 43
8.4 Composition limits. 43
8.5 Impact test requirements of steels . 44
ISO 14723:2009(E)
8.6 Bolting. 45
8.7 Sour service. 45
9 Welding .
...