SIST EN ISO 14723:2025

Oil and gas industries including lower carbon energy - Pipeline transportation systems - Subsea pipeline valves (ISO 14723:2025)

This document defines the requirements for the design, manufacturing, quality control, assembly, testing, and documentation of ball, check, gate, plug, and axial on–off valves for application in subsea pipeline systems for the petroleum and natural gas industries.
This document applies to ASME Class 150, 300, 600, 900, 1500, and 2500 valves intended for use in subsea pipelines. Use of these valves for any other purpose is outside the scope of this document.
This document is a supplement to API 6DSS, 3rd edition (2017), with Addendum 1 (2019) and Addendum 2 (2022), including Errata 1-3, the requirements of which are applicable with the additions specified in this document.

Öl- und Gasindustrie einschließlich kohlenstoffarmer Energieträger - Rohrleitungstransportsysteme - Unterwasserarmaturen (ISO 14723:2025)

Industries du pétrole et du gaz, y compris les énergies à faible teneur en carbone - Systèmes de transport par conduites - Vannes de conduites immergées (ISO 14723:2025)

Le présent document définit les exigences pour la conception, la fabrication, le contrôle qualité, l’assemblage, les essais et la documentation des vannes à boisseau sphérique, des clapets de retenue, des robinets-vannes, des vannes à boisseau et des vannes axiales tout ou rien pour application dans des systèmes de conduites immergées pour les industries du pétrole et du gaz naturel.
Ce document s'applique aux vannes ASME de classe 150, 300, 600, 900, 1500 et 2500 destinées à être utilisées dans les conduites immergées. L'utilisation de ces vannes à d'autres fins n'entre pas dans le domaine d'application de ce document.
Le présent document complète la Spécification API 6DSS, 3e édition (2022), ainsi que l’Addendum 1 (2019) et l’Addendum 2 (2022), y compris l’Errata 1-3, dont les exigences sont applicables avec les ajouts spécifiés dans le présent document.

Naftna in plinska industrija, vključno z nizkoogljično energijo - Transportni cevovodni sistemi - Armature podvodnih cevovodov (ISO 14723:2025)

Ta dokument določa zahteve za projektiranje, izdelavo, nadzor kakovosti, sestavljanje, preskušanje in dokumentiranje krogelnih, kontrolnih, stožčastih in aksialnih regulacijskih armatur ter zasunov, ki se uporabljajo v sistemih podvodnih cevovodov za industrijo za predelavo nafte in zemeljskega plina. Ta dokument se uporablja za armature razredov ASME 150, 300, 600, 900, 1500 in 2500, namenjene za uporabo v podvodnih cevovodih. Uporaba teh armatur za druge namene ne spada na področje uporabe tega dokumenta. Ta dokument dopolnjuje specifikacijo API 6DSS, tretja izdaja (2017), z dodatkom 1 (2019) in dodatkom 2 (2022), vključno s seznamom napak 1 do 3, katerih zahteve se uporabljajo z dodatki v tem dokumentu.

General Information

• Status: Published
• Public Enquiry End Date: 30-Jul-2024
• Publication Date: 23-Jul-2025
• ICS: 23.060.01 - Valves in general
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 23-Jul-2025
• Due Date: 27-Sep-2025
• Completion Date: 24-Jul-2025
• Ref Project: EN ISO 14723:2025 - Oil and gas industries including lower carbon energy - Pipeline transportation systems - Subsea pipeline valves (ISO 14723:2025)

Relations

• Revises: SIST EN ISO 14723:2009 - Petroleum and natural gas industries - Pipeline transportation systems - Subsea pipeline valves (ISO 14723:2009)
• Effective Date: 08-Apr-2024

Overview

EN ISO 14723:2025 - Oil and gas industries including lower carbon energy - Pipeline transportation systems - Subsea pipeline valves (ISO 14723:2025) - defines requirements for subsea pipeline valves used in the petroleum and natural gas sectors. This European adoption of ISO 14723 (approved June 2025) supersedes the 2009 edition and supplements API 6DSS, 3rd edition (2017) (including Addenda 1 & 2 and Errata 1–3). It applies to ball, check, gate, plug and axial on–off valves in subsea pipeline systems and covers ASME Classes 150, 300, 600, 900, 1500 and 2500.

Key Topics and Requirements

• Scope and applicability: Focused exclusively on subsea pipeline valve applications for petroleum and natural gas; use outside this scope is not covered.
• Design and manufacturing: Sets requirements that manufacturers must follow for materials, construction and suitability for subsea service, in alignment with API 6DSS 3rd edition.
• Quality control and documentation: Requires documented quality control, traceability and records consistent with API 6DSS and ISO expectations.
• Assembly and testing: Mandates assembly procedures and functional/pressure testing requirements as per the referenced API specification, with ISO 14723 supplements where specified.
• Valve marking: Adds a mandatory marking requirement - ISO 14723 must appear on the nameplate; dual marking with “API 6DSS” is permitted. (Note: Annex A from the earlier edition is removed in its entirety.)
• Normative references and terminology: Uses API 6DSS and related ISO definitions (terms from API 6DSS and ISO 14313).

Practical Applications and Users

EN ISO 14723:2025 is essential for professionals involved with subsea pipeline systems and valve lifecycle management:

• Valve manufacturers - for design, production, testing and compliance of subsea valves.
• EPC contractors and subsea integrators - to specify compliant valves in procurement and installation packages.
• Pipeline operators and asset owners - to ensure valves meet recognized standards for safety, reliability and maintainability.
• Quality and inspection teams - for acceptance criteria, documentation and traceability.
• Regulatory bodies and certifying agencies - as the harmonized standard for conformity assessment in CEN member states. This standard supports safe, reliable subsea pipeline transport of oil, gas and lower‑carbon energy carriers.

Related Standards

• API 6DSS, 3rd edition (2017) (including Addenda 1 & 2 and Errata 1–3) - primary normative reference supplemented by ISO 14723:2025.
• ISO 14313 - foundational pipeline valve terminology and background.
• ASME pressure class designations - ASME Class 150–2500 (valve rating references).

Keywords: subsea pipeline valves, EN ISO 14723:2025, API 6DSS, ASME Class, ball valve, gate valve, check valve, plug valve, axial on–off valve, pipeline transportation systems, valve testing, valve marking, quality control.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2025
Naftna in plinska industrija, vključno z nizkoogljično energijo - Transportni
cevovodni sistemi - Armature podvodnih cevovodov (ISO 14723:2025)
Oil and gas industries including lower carbon energy - Pipeline transportation systems -
Subsea pipeline valves (ISO 14723:2025)
Öl- und Gasindustrie einschließlich kohlenstoffarmer Energieträger -
Rohrleitungstransportsysteme - Unterwasserarmaturen (ISO 14723:2025)
Industries du pétrole et du gaz, y compris les énergies à faible teneur en carbone -
Systèmes de transport par conduites - Vannes de conduites immergées (ISO
14723:2025)
Ta slovenski standard je istoveten z: EN ISO 14723:2025
ICS:
23.060.01 Ventili na splošno Valves in general
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14723
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2025
EUROPÄISCHE NORM
ICS 75.200 Supersedes EN ISO 14723:2009
English Version
Oil and gas industries including lower carbon energy -
Pipeline transportation systems - Subsea pipeline valves
(ISO 14723:2025)
Industries du pétrole et du gaz, y compris les énergies Öl- und Gasindustrie einschließlich kohlenstoffarmer
à faible teneur en carbone - Systèmes de transport par Energieträger - Rohrleitungstransportsysteme -
conduites - Vannes de conduites immergées (ISO Unterwasserarmaturen (ISO 14723:2025)
14723:2025)
This European Standard was approved by CEN on 24 June 2025.

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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14723:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 14723:2025) has been prepared by Technical Committee ISO/TC 67 "Oil and
gas industries including lower carbon energy" in collaboration with Technical Committee CEN/TC 12
“Oil and gas industries including lower carbon energy” the secretariat of which is held by NEN.
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 2025, and conflicting national standards
shall be withdrawn at the latest by December 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 14723:2009.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 14723:2025 has been approved by CEN as EN ISO 14723:2025 without any modification.

International
Standard
ISO 14723
Third edition
Oil and gas industries including
2025-06
lower carbon energy — Pipeline
transportation systems — Subsea
pipeline valves
Industries du pétrole et du gaz, y compris les énergies à faible
teneur en carbone — Systèmes de transport par conduites —
Vannes de conduites immergées
Reference number
ISO 14723:2025(en) © ISO 2025
ISO 14723:2025(en)
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 14723:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references .
...