SIST EN 19:2024/oprA1:2026

Industrial valves - Marking of metallic valves

This document specifies the requirements for marking of industrial metallic valves. It defines the method of applying the markings, on the body, on a flange, on an identification plate or any other location.
When specified as a normative reference in a valve product or performance standard, this document is considered in conjunction with the specified requirements of that valve product or performance standard.
The marking requirements for plastic valves are not within the scope of this document.

Industriearmaturen - Kennzeichnung von Armaturen aus Metall

Robinetterie industrielle - Marquage des appareils de robinetterie métalliques

Industrijski ventili - Označevanje kovinskih ventilov - Dopolnilo A1

General Information

• Status: Not Published
• Public Enquiry End Date: 02-Feb-2026
• ICS: 23.060.01 - Valves in general
• Technical Committee: TLP - Pressure vessels
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 08-Dec-2025
• Due Date: 27-Apr-2026
• Directive: 2014/68/EU - Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Mandate: M/601 - COMMISSION IMPLEMENTING DECISION of 1.3.2024 on a standardisation request to the European Committee for Standardization and the European Committee for Electrotechnical Standardization as regards pressure equipment and assemblies in support of Directive 2014/68/EU of the European Parliament and of the Council
• Ref Project: EN 19:2023/prA1 - Industrial valves - Marking of metallic valves

Relations

• Revises: SIST EN 19:2024 - Industrial valves - Marking of metallic valves
• Effective Date: 01-Jan-2026

Overview

SIST EN 19:2024/oprA1:2026 is a draft amendment to the European Standard EN 19:2023, prepared by CEN/TC 69, focusing on the marking of industrial metallic valves. This standard specifies detailed requirements for how metallic valves used in industry must be marked. It covers the types of markings, their locations-such as directly on the valve body, flanges, or attached identification plates-and the method of applying these markings.

This standard is vital for manufacturers, distributors, and users of industrial metallic valves to ensure traceability, safety, and compliance with applicable legislation, especially the European Pressure Equipment Directive (PED 2014/68/EU). Notably, plastic valves are excluded from this scope.

Key Topics

• Mandatory Markings: Every industrial metallic valve must display integral markings or be affixed with a marking plate bearing key information including manufacturer details, pressure and temperature ratings, valve identification codes, and conformity labels aligned with EU regulations.

• Supplementary and Other Markings: Additional markings may include information such as supplementary technical details, maintenance instructions, or special designations. Annex B offers illustrative examples of compliant marking plates and combinations.

• Advanced Marking Methods: The amendment incorporates the option to use digital and advanced marking technologies based on standards like EN IEC 61406-1:2022 and EN IEC 61406-2:2024. These methods complement traditional markings by providing enhanced product data accessibility, especially useful in automated industrial environments.

• Pressure and Temperature Specifications:

  • PS: Maximum allowable pressure a valve is designed for.
  • TSmax and TSmin: Maximum and minimum allowable temperatures.

  These values must be clearly marked following defined conventions that align with related EN standards such as EN 12516-1 and EN 1092 series for flanges.

• Compliance and Normative References: The amendment updates references to key European standards covering flanges and pressure ratings, ensuring cohesiveness with the broader valves and piping standards ecosystem.

Applications

The SIST EN 19:2024/oprA1:2026 standard applies primarily to:

• Valve manufacturers who must mark their products to ensure compliance with EU pressure equipment legislation and product-specific standards.
• End-users and operators of industrial valve installations seeking safety assurance and correct valve identification for installation, operation, and maintenance.
• Quality control and inspection bodies requiring standardized markings to verify conformity and facilitate traceability.
• Industrial sectors such as oil & gas, chemical processing, water treatment, and manufacturing where metallic valves are widely deployed.

The introduction of advanced digital marking methods provides significant advantages in process automation, asset management, and digital twin integration, enabling easier access to valve data throughout the lifecycle.

Related Standards

SIST EN 19:2024/oprA1:2026 is used alongside these important standards:

• EN 1092 series - Covers specifications for circular flanges for pipes and valves (steel, cast iron, copper, aluminium alloys).
• EN 12516-1 - Defines pressure/temperature ratings for industrial valves.
• EN IEC 61406-1 & 61406-2 - Standards for advanced digital marking and identification links.
• EN IEC 63365 - Digital nameplate for industrial process measurement and control, supporting data-rich product identification.
• EN 764-1 - Relates to design codes for pressure components, providing background on pressure and temperature relationships.

The standard also aligns with Directive 2014/68/EU (Pressure Equipment Directive), helping manufacturers meet essential safety and regulatory requirements within the European Union.

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By adhering to SIST EN 19:2024/oprA1:2026, stakeholders ensure consistent, reliable, and legally compliant marking of industrial metallic valves-facilitating safety, traceability, quality assurance, and the integration of emerging digital technologies in industry.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2026
Industrijski ventili - Označevanje kovinskih ventilov - Dopolnilo A1
Industrial valves - Marking of metallic valves
Industriearmaturen - Kennzeichnung von Armaturen aus Metall
Robinetterie industrielle - Marquage des appareils de robinetterie métalliques
Ta slovenski standard je istoveten z: EN 19:2023/prA1
ICS:
23.060.01 Ventili na splošno Valves in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 19:2023
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
November 2025
ICS 23.060.01
English Version
Industrial valves - Marking of metallic valves
Robinetterie industrielle - Marquage des appareils de Industriearmaturen - Kennzeichnung von Armaturen
robinetterie métalliques aus Metall
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 69.

This draft amendment A1, if approved, will modify the European Standard EN 19:2023. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

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 19:2023/prA1:2025 E
worldwide for CEN national Members.

Contents
European foreword . 3
1 Modification to Clause 2, “Normative References” . 4
2 Modification to Clause 3, “Terms and definitions” . 4
3 Modification to 4.1, “General” . 4
4 Modification to 4.2, “Mandatory markings” . 5
5 Modification to 4.3, “Supplementary markings” . 5
6 Modification to 4.4, “Other markings” . 5
7 Modification to 5.7.1, “General” . 5
8 Modification to 5.7.2, “Maximum allowable pressure, PS” . 6
9 Modification to 5.7.3, “Maximum allowable temperature, TS ” . 6
max
10 Modification to 5.7.4, “Minimum allowable temperature, TS ” . 6
min
11 Modification to Annex A . 6
12 Addition of Annex B “Marking requirements examples” . 6
13 Modification to Annex ZA . 9
14 Modifications to the Bibliography . 10

European foreword
This document (EN 19:2023/prA1:2025) has been prepared by Technical Committee CEN/TC 69
“Industrial valves”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
For the relationship with EU Legislation, see informative Annex ZA, which is an integral part of this
document.
1 Modification to Clause 2, “Normative References”
Move the following references to the Bibliography and update them as follows:
EN 1092-1:2018, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN
designated - Part 1: Steel flanges
EN 1092-2:2023, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN
designated - Part 2: Cast iron flanges
EN 1092-3:2003, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN
designated - Part 3: Copper alloy flanges
EN 1092-4:2002, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN
designated - Part 4: Aluminium alloy flanges
EN 1759-1:2004, Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, Class
designated - Part 1: Steel flanges, NPS 1/2 to 24
EN 1759-3:2003, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, Class
designated - Part 3: Copper alloy flanges
EN 1759-4:2003, Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, class
designated - Part 4: Aluminium alloy flanges
2 Modification to Clause 3, “Terms and definitions”
Add the following term and definition:
“3.4
advanced methods
methods for providing specific product information using digital technologies and standards”
3 Modification to 4.1, “General”
Replace the text in 4.1.1 with the following text:
“Every industrial metallic valve shall be provided with integral markings, firmly attached marking plate
and identification plate, as applicable.
For industrial metallic valves that meet the requirements of the European legislation the marking shall
conform to the requirements of the European pressure equipment legislation.
For industrial metallic valves that do not meet the requirements of the European legislation for pressure
equipment or are exempt from conformity, any marking requirements in the applicable valve product
standard shall be complied with.
Annex B provides marking requirements examples.”
Replace the text in 4.1.3 and 4.1.4 with the following text:
“4.1.3 Markings shall be affixed as required by 4,2, 4.3 and 4
...