National foreword

This British Standard is the UK implementation of EN 19:2023. It supersedes BS EN 19:2016, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee PSE/18/1, Industrial valves, steam traps, actuators and safety devices against excessive pressure - Valves - Basic standards.

A list of organizations represented on this committee can be obtained on request to its committee manager.

Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law.

This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication.

This publication is not intended to constitute a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2023.

This European Standard was approved by CEN on 1 October 2023.

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 foreword

This document (EN 19:2023) has been prepared by Technical Committee CEN/TC 69 “Industrial valves”, 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 May 2024, and conflicting national standards shall be withdrawn at the latest by May 2024.

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 19:2016.

In comparison with the previous edition, the following technical modifications have been made:

update of the normative references;
reformulation of 3.2, 3.3, 4.5, 5.4, 5.7, 5.12, 5.13, 5.18, 5.19;
extension of the content of 4.1.1;
minor changes in 4.1.2, 4.1.4, 4.2.2, 4.4, 4.5.2, 4.5.3, 5.1.3, 5.2.1, 5.2.2, 5.3, 5.8, 5.17 and shortening the content of 4.1.3;
addition of 4.2 2) b);
deletion of 4.5.4, 4.5.5, 5.1.2, Note 1, 5.1.4, 5.9, 5.11, 5.16, 5.17;
change of the title and adjustment of subjects, markings and clause references in Table 1;
addition of a new Annex A;
modification of Annex ZA.

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.

Any feedback and questions on this document should be directed to the users’ national standards body. A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.

1 Scope

This document specifies the requirements for marking and labelling of industrial metallic valves. It also specifies the method of applying respective markings on a valve.

This document is to be read together with the marking and labelling provisions stipulated in a valve product standard.

The requirements for markings on valves made from plastic materials are not within the scope of this document.

2 Normative references

3 Terms and definitions

4 General marking and labelling requirements

4.1 General

4.2 Mandatory markings

4.3 Supplementary markings

4.4 Other markings

4.5 Omission of markings

5 Details of markings

5.1 Nominal size

5.2 PN/Class designation

5.3 Material

5.4 Manufacturer's (importer’s) name and registered trade details

5.5 Arrow for direction of flow

5.6 Ring joint number

5.7 Allowable limits

5.8 Threaded end identification

5.9 Product identification

5.10 Cast (heat) identification

5.11 Trim

5.12 Service symbols

5.13 Internal coating, liner, lining or internal painting

5.14 Year of manufacture

5.15 Flow coefficients

5.16 Allowable differential pressure Δp

5.17 Closing direction

Bibliography

BS EN 19:2023

Industrial valves. Marking of metallic valves

Current, Under Review

Published:

30 Nov 2023