EN ISO 17078-2:2026

• Abstract:

  This document provides requirements for subsurface flow-control devices used in side-pocket mandrels intended for use in the worldwide petroleum and natural gas industry. This document addresses injection-pressure-operated (IPO), production-pressure-operated (PPO), pilot, orifice, tubing-retrievable, and dummy flow-control devices. It includes requirements for selecting, designing, manufacturing, quality control, testing, and preparation for the shipping of flow-control devices. Additionally, it includes information regarding performance testing and calibration requirements.; The installation and retrieval of flow-control devices is outside the scope of this document. Additionally, this document is not applicable to flow-control devices with concentric axes.; This document does not include requirements for side-pocket mandrels, running, pulling, kick-over tools, or latches. Reconditioning of used flow-control devices is outside the scope of this document.; This document supplements API Spec 19G2, 2nd edition (2020), the requirements of which are applicable with the exceptions specified in this document.

• Status: Published
• Publication Date: 01-Sep-2026
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 02-Sep-2026
• Completion Date: 02-Sep-2026
• Ref Project: SIST EN ISO 17078-2:2026 - Oil and gas industries including lower carbon energy - Drilling, production and injection equipment - Part 2: Flow-control devices for side-pocket mandrels (ISO 17078-2:2026)

• Replaces: EN ISO 17078-2:2007/AC:2009 - Petroleum and natural gas industries - Drilling and production equipment - Part 2: Flow-control devices for side-pocket mandrels (ISO 17078-2:2007/Cor 1:2009)
• Effective Date: 04-Oct-2023
• Replaces: EN ISO 17078-2:2007 - Petroleum and natural gas industries - Drilling and production equipment - Part 2: Flow-control devices for side-pocket mandrels (ISO 17078-2:2007)
• Effective Date: 04-Oct-2023
• Consolidated By: ISO 17078-2:2026 - Oil and gas industries including lower carbon energy — Drilling, production and injection equipment — Part 2: Flow-control devices for side-pocket mandrels
• Effective Date: 12-Feb-2026

EN ISO 17078-2:2026 is a CEN-adopted European Standard based on ISO 17078-2:2026 for the oil and gas industries including lower carbon energy. It specifies requirements for subsurface flow-control devices used in side-pocket mandrels, including selection, design, manufacture, quality control, testing, and preparation for shipping. The standard is aimed at manufacturers, operators, and test organizations working with IPO, PPO, pilot, orifice, tubing-retrievable, and dummy devices, and it supplements API Spec 19G2, 2nd edition (2020).

What does EN ISO 17078-2:2026 specify?

EN ISO 17078-2:2026 covers flow-control devices for side-pocket mandrels used in the worldwide petroleum and natural gas industry. It sets requirements for the devices themselves and leaves installation, retrieval, mandrels, tools, latches, and reconditioning outside its scope.

The document is organized into:

• Clause 1 - Scope
• Clause 2 - Normative references
• Clause 3 - Terms and definitions
• Clause 4 - Supplements to API Spec 19G2, 2nd edition (2020)
• Bibliography

Clause 4 is the main technical part. It adds general requirements, device descriptions, design practices, and a validation and functional testing overview.

What are the key requirements of EN ISO 17078-2:2026?

EN ISO 17078-2:2026 keeps API Spec 19G2 as the base document and adds the parts needed for side-pocket mandrel flow-control devices covered here.

• Clause 4.1 says the requirements of API Spec 19G2 apply, with specific substitutions. Where API Q1 is referenced, ISO 9000 applies; where API 19G1 is referenced, ISO 17078-1 applies; where API 19G3 is referenced, ISO 17078-3 applies; and where API 19G4 is referenced, ISO 17078-4 applies. In practice, users must follow the ISO series used by this standard.
• Table 1 in 4.2.1 adds device descriptions and groups, including IPO, balanced IPO, IPO with choke, PPO, pilot, orifice, venturi nozzle, shear orifice, dump/kill, dummy, and tubing-retrievable. This matters when ordering, naming, or qualifying the exact device type.
• Clause 4.2.2 gives minimum design practices. The gas passage entry port should be located in the SPM pocket undercut, the exterior should be rounded or beveled for handling, and the design should prevent accidental unseating while other devices are pulled through the mandrel.
• Clause 4.2.2 also adds tubing-retrievable guidance. The device is threaded to the mandrel, the full gas lift valve must remain within the gas lift mandrel outside diameter after connection, and a matched check valve or the lower part of the joint serves as the seat. The note points readers to ISO 7-1 for thread reference dimensions.
• Clause 4.3 and Table 2 define the validation and device functional test package by device grade. The matrix links device groups to tests such as probe or travel, load rate, flow, back-check, open and close, actuation life cycle, erosion, shelf, and port/seat leakage, so teams can select the right qualification plan.
• The scope and notes also point to ISO 16530-1 when a device may be used as a well barrier element. That is important for well integrity decisions in completion design.

What terms does EN ISO 17078-2:2026 define?

• Injection-pressure-operated (IPO) - a flow-control device that opens under injection pressure.
• Production-pressure-operated (PPO) - a flow-control device that operates under production pressure.
• Tubing-retrievable flow-control device - a flow-control device fixed to a side-pocket mandrel and retrieved through the tubing.
• Dummy flow-control device - a blank device installed in a side-pocket mandrel to prevent flow or pressure communication.
• Side-pocket mandrel - the mandrel that provides the side pocket where the flow-control device is installed.
• Flow-control device - a subsurface device used in a side-pocket mandrel to control flow.

Who uses EN ISO 17078-2:2026?

EN ISO 17078-2:2026 is used by manufacturers of downhole flow-control equipment, oil and gas operators, completion engineers, quality managers, and test laboratories. They use it to specify the correct device type, align design and quality control, plan validation and functional testing, and check shipping readiness for side-pocket mandrel applications.

What changed in EN ISO 17078-2:2026 from the previous edition?

EN ISO 17078-2:2026 supersedes EN ISO 17078-2:2007 and EN ISO 17078-2:2007/AC:2009. The foreword says this second edition is technically revised and fully reorganized, adds definition, description, design optimization, and requirements for tubing-retrievable flow-control devices, and adds ISO 16530-1 and ISO 7-1 to the bibliography.

Which standards are used with EN ISO 17078-2:2026?

• API Spec 19G2, 2nd edition (2020) - the base document that EN ISO 17078-2:2026 supplements.
• ISO 9000 - provides quality management fundamentals and vocabulary where API Q1 is referenced.
• ISO 17078-1 - covers side-pocket mandrels where API 19G1 is referenced.
• ISO 17078-3 - covers running tools, pulling tools, kick-over tools, and latches for side-pocket mandrels where API 19G3 is referenced.
• ISO 17078-4 - covers practices for side-pocket mandrels and related equipment where API 19G4 is referenced.
• ISO 16530-1 - is pointed to for well barrier requirements and guidance.
• ISO 7-1 - is pointed to for thread reference dimensions.

What does the EN ISO 17078-2:2026 document contain?

EN ISO 17078-2:2026 contains a device description table and a testing matrix. Table 1 classifies the flow-control device groups and types, while Table 2 maps device grades to validation and functional tests. Clause 4.2.2 sets minimum design practices for handling and seating, and Clause 4.3 points to tests for travel, load rate, flow, back-check, open and close, life cycle, erosion, shelf, and leakage. The document is mainly used for specification, qualification, and procurement of side-pocket mandrel flow-control devices.

SLOVENSKI STANDARD
01-november-2026
Naftna in plinska industrija, vključno z nizkoogljično energijo - Vrtalna in
proizvodna oprema - 2. del: Naprave za regulacijo pretoka za vpenjalne osi s
stranskimi žepi (ISO 17078-2:2026)
Oil and gas industries including lower carbon energy - Drilling, production and injection
equipment - Part 2: Flow-control devices for side-pocket mandrels (ISO 17078-2:2026)
Öl- und Gasindustrie einschließlich kohlenstoffarmer Energieträger - Bohr-, Förder- und
Einpressausrüstung - Teil 2: Durchfluss-Regelvorrichtungen für Gaslift-Ventile (ISO
17078-2:2026)
Industries du pétrole et du gaz naturel - Équipement de forage et de production - Partie
2: Dispositifs de régulation de la vitesse d'écoulement pour raccords à poche latérale
(ISO 17078-2:2026)
Ta slovenski standard je istoveten z: EN ISO 17078-2:2026
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 17078-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2026
EUROPÄISCHE NORM
ICS 75.180.10 Supersedes EN ISO 17078-2:2007, EN ISO 17078-
2:2007/AC:2009
English Version
Oil and gas industries including lower carbon energy -
Drilling, production and injection equipment - Part 2:
Flow-control devices for side-pocket mandrels (ISO
17078-2:2026)
Industries du pétrole et du gaz, y compris les énergies Öl- und Gasindustrie einschließlich kohlenstoffarmer
à faible teneur en carbone - Equipement de forage, de Energieträger - Bohr-, Förder- und Einpressausrüstung
production et d'injection - Partie 2: Dispositifs de - Teil 2: Durchfluss-Regelvorrichtungen für Gaslift-
régulation de débit pour raccords à poche latérale (ISO Ventile (ISO 17078-2:2026)
17078-2:2026)
This European Standard was approved by CEN on 9 July 2026.

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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17078-2:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 17078-2:2026) 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 March 2027, and conflicting national standards shall
be withdrawn at the latest by March 2027.
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 17078-2:2007.
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 17078-2:2026 has been approved by CEN as EN ISO 17078-2:2026 without any
modification.
International
Standard
ISO 17078-2
Second edition
Oil and gas industries including
2026-08
lower carbon energy — Drilling,
production and injection
equipment —
Part 2:
Flow-control devices for side-pocket
mandrels
Industries du pétrole et du gaz, y compris les énergies à faible
teneur en carbone — Equipement de forage, de production et
d’injection —
Partie 2: Dispositifs de régulation de débit pour raccords à poche
latérale
Reference number
ISO 17078-2:2026(en) © ISO 2026

ISO 17078-2:2026(en)
© ISO 2026
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
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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 17078-2:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Supplements to API Spec 19G2, 2nd edition (2020) . 2
4.1 General requirements .2
4.2 Technical specification .2
4.3 Validation and device functional testing overview .3
Bibliography . 4

iii
ISO 17078-2:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
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with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
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ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are caut
...