SIST EN 19:2024

SLOVENSKI STANDARD
01-januar-2024
Nadomešča:
SIST EN 19:2016
Industrijski ventili - Označevanje kovinskih ventilov
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
ICS:
23.060.01 Ventili na splošno Valves in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 19
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2023
EUROPÄISCHE NORM
ICS 23.060.01 Supersedes EN 19:2016
English Version
Industrial valves - Marking of metallic valves
Robinetterie industrielle - Marquage des appareils de Industriearmaturen - Kennzeichnung von Armaturen
robinetterie métalliques aus Metall
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 COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 19:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 General marking and labelling requirements . 5
4.1 General . 5
4.2 Mandatory markings. 6
4.3 Supplementary markings . 6
4.4 Other markings . 6
4.5 Omission of markings . 8
5 Details of markings . 8
5.1 Nominal size . 8
5.2 PN/Class designation . 8
5.3 Material . 8
5.4 Manufacturer's (importer’s) name and registered trade details . 9
5.5 Arrow for direction of flow . 9
5.6 Ring joint number . 9
5.7 Allowable limits . 9
5.7.1 General . 9
5.7.2 Maximum allowable pressure, PS . 9
5.7.3 Maximum allowable temperature, TS . 9
max
5.7.4 Minimum allowable temperature, TS . 9
min
5.8 Threaded end identification . 9
5.9 Product identification . 9
5.10 Cast (heat) identification . 10
5.11 Trim . 10
5.12 Service symbols . 10
5.13 Internal coating, liner, lining or internal painting . 10
5.14 Year of manufacture . 10
5.15 Flow coefficients . 10
5.16 Allowable differential pressure Δp . 10
5.17 Closing direction . 10
Annex A (informative) Relationships of the relevant marking and labelling information for
industrial valves within the scope of the European legislation for pressure
equipment . 11
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU (Pressure Equipment Directive) aimed to be
covered. 13
Bibliography . 14

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
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 736-1:2018, Valves - Terminology - Part 1: Definition of types of valves
EN 736-2:2016, Valves - Terminology - Part 2: Definition of components of valves
EN 736-3:2008, Valves - Terminology - Part 3: Definition of terms
EN 764-1:2015+A1:2016, Pressure equipment - Part 1: Vocabulary
EN 1092-1:2018, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN
designated - Part 1: Steel flanges
EN 1092-2:1997, 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
EN 12516-1:2014+A1:2018, Industrial valves - Shell design strength - Part 1: Tabulation method for steel
valve shells
EN 12516-4:2014+A1:2018, Industrial valves - Shell design strength - Part 4: Calculation method for valve
shells manufactured in metallic materials other than steel
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 736-1:2018, EN 736-2:2016,
EN 736-3:2008, EN 764-1:2015+A1:2016 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
integral markings
integrally cast, forged or stamped markings on the body or bonnet/cover of the valve
3.2
marking plate
plate showing applicable mandatory markings
3.3
identification plate
plate showing any other markings than mandatory markings
4 General marking and labelling requirements
4.1 General
4.1.1 Every industrial metallic valve shall be provided with integral markings, firmly attached marking
plate and identification plate, as applicable.
The corresponding requirements, regarding marking and labelling outlined in the European legislation
for pressure equipment shall be observed.
For industrial metallic valves that do not meet the requirements of the European legislation for pressure
equipment or are exempt from compliance, any subject related provisions in applicable valve product
standard shall be taken into account.
4.1.2 Mandatory markings are independent of language. When it is necessary to include descriptive
words so as to properly specify any supplement
...