prEN ISO 11177

Vitreous and porcelain enamels - Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply - Quality requirements and testing (ISO/DIS 11177:2025)

This document specifies the requirements for product quality and product testing of enamelled valves and pressure pipe fittings for untreated and potable water supply.
It does not apply to chemical service glass-enamel and apparatus enamel.

Emails und Emaillierungen - Innen- und außenemaillierte Armaturen und Druckrohrformstücke für die Roh- und Trinkwasserversorgung - Qualitätsanforderungen und Prüfung (ISO/DIS 11177:2025)

Émaux vitrifiés - Robinetterie et raccords de tuyauterie pour conduites forcées émaillés à l’intérieur et à l’extérieur destinés à l’alimentation en eau non traitée et en eau potable - Exigences de qualité et essais (ISO/DIS 11177:2025)

Le présent document spécifie les exigences quant à la qualité et aux essais des produits de robinetterie et raccords de tuyauterie pour conduites forcées émaillés destinés à l'alimentation en eau non traitée et en eau potable.
Il ne s'applique pas aux émaux vitrifiés et émaux d'appareillage destinés à une utilisation chimique.

Steklasti in porcelanski emajli - Znotraj in zunaj emajlirani ventili in tlačni cevni fitingi za neobdelano in pitno vodo - Zahteve za kakovost in preskušanje (ISO/DIS 11177:2025)

General Information

• Status: Not Published
• Publication Date: 02-May-2027
• ICS: 25.220.50 - Enamels
• Technical Committee: CEN/TC 262 - Metallic and other inorganic coatings
• Drafting Committee: CEN/TC 262/WG 5 - Vitreous enamel coatings
• Current Stage: 4020 - Submission to enquiry - Enquiry
• Start Date: 09-Oct-2025
• Due Date: 01-Apr-2026
• Completion Date: 09-Oct-2025
• Ref Project: oSIST prEN ISO 11177:2025 - Vitreous and porcelain enamels - Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply - Quality requirements and testing (ISO/DIS 11177:2025)

Relations

• Revises: EN ISO 11177:2019 - Vitreous and porcelain enamels - Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply - Quality requirements and testing (ISO 11177:2019)
• Effective Date: 05-Feb-2025

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2025
Steklasti in porcelanski emajli - Znotraj in zunaj emajlirani ventili in tlačni cevni
fitingi za neobdelano in pitno vodo - Zahteve za kakovost in preskušanje (ISO/DIS
11177:2025)
Vitreous and porcelain enamels - Inside and outside enamelled valves and pressure pipe
fittings for untreated and potable water supply - Quality requirements and testing
(ISO/DIS 11177:2025)
Emails und Emaillierungen - Innen- und außenemaillierte Armaturen und
Druckrohrformstücke für die Roh- und Trinkwasserversorgung - Qualitätsanforderungen
und Prüfung (ISO/DIS 11177:2025)
Émaux vitrifiés - Robinetterie et raccords de tuyauterie pour conduites forcées émaillés à
l’intérieur et à l’extérieur destinés à l’alimentation en eau non traitée et en eau potable -
Exigences de qualité et essais (ISO/DIS 11177:2025)
Ta slovenski standard je istoveten z: prEN ISO 11177
ICS:
23.040.01 Deli cevovodov in cevovodi Pipeline components and
na splošno pipelines in general
25.220.50 Emajlne prevleke Enamels
91.140.60 Sistemi za oskrbo z vodo Water supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 11177
ISO/TC 107
Vitreous and porcelain enamels —
Secretariat: KATS
Inside and outside enamelled
Voting begins on:
valves and pressure pipe fittings for
2025-10-07
untreated and potable water supply
Voting terminates on:
— Quality requirements and testing
2025-12-30
Émaux vitrifiés — Robinetterie et raccords de tuyauterie pour
conduites forcées émaillés à l’intérieur et à l’extérieur destinés à
l’alimentation en eau non traitée et en eau potable — Exigences
de qualité et essais
ICS: 91.140.60; 25.220.50
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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.
Reference number
ISO/DIS 11177:2025(en)
DRAFT
ISO/DIS 11177:2025(en)
International
Standard
ISO/DIS 11177
ISO/TC 107
Vitreous and porcelain enamels —
Secretariat: KATS
Inside and outside enamelled
Voting begins on:
valves and pressure pipe fittings for
untreated and potable water supply
Voting terminates on:
— Quality requirements and testing
Émaux vitrifiés — Robinetterie et raccords de tuyauterie pour
conduites forcées émaillés à l’intérieur et à l’extérieur destinés à
l’alimentation en eau non traitée et en eau potable — Exigences
de qualité et essais
ICS: 91.140.60; 25.220.50
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 11177:2025(en)
ii
ISO/DIS 11177:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Sampling . 2
5 Quality requirements and testing procedures . 2
5.1 Enamelling surface quality .2
5.2 Coat thickness .2
5.3 Hardness .2
5.4 Resistance to thermal shock .2
5.5 Corrosion resistance to water and steam .2
5.6 Corrosion resistance to citric acid .3
5.7 Corrosion and chemical resistance to acid soil .3
5.8 Corrosion and chemical resistance to sub-surface migration of enamel after impact test .3
5.9 Corrosion resistance after scratch damage .4
5.10 Corrosion resistance after abrasion damage .4
5.11 Resistance to climatic exposure and ultraviolet radiation .4
5.12 Physiological harmlessness .5
5.13 Durability and sustainability .5
6 Test report . 5

iii
ISO/DIS 11177:2025(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
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
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 documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings.
This third edition cancels and replaces the second edition (ISO 11177:2019), which has been technically
revised. The following change has been made:
— the Normative references have been updated.
— the Terms and definitions have been updated.
— the coating thickness specification has been redefined.
— the frequency of testing for the quality requirements have been defined.
— a new clause has been added on durability and sustainability.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
ISO/DIS 11177:2025(en)
Introduction
The requirements defined in this document regarding the product quality of enamelled valves and pressure
pipe fittings for untreated and potable water supply take into account the real stress conditions to which a
component can be subjected in the course of its operating life. Typical types of stress are
— during storage: climate, UV radiation, mechanical stress,
— during transportation: mechanical stress, e.g. at certain points (impact), laterally (friction),
— during preparation for installation: cleaning agents, mechanical stress, e.g. at certain points (impact),
laterally (friction),
— during installation: mechanical stress, and
— during operation: abrasion caused by the carried medium, corrosion from surrounding medium,
mechanical stress from shifting ground loads, UV radiation with valves built in above ground.

v
DRAFT International Standard ISO/DIS 11177:2025(en)
Vitreous and porcelain enamels — Inside and outside
enamelled valves and pressure pipe fittings for untreated and
potable water supply — Quality requirements and testing
1 Scope
This document specifies the requirements for product quality and product testing of enamelled valves and
pressure pipe fittings for untreated and potable water supply.
It does not apply to chemical service glass-enamel and apparatus enamel.
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.
ISO 2178, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness — Magnetic method
ISO 6370-1, Vitreous and porcelain enamels — Determination of the resistance to abrasion — Part 1: Abrasion
testing apparatus
ISO 6370-2, Vitreous and porcelain enamels — Determination of the resistance to abrasion — Part 2: Loss in
mass after sub-surface abrasion
ISO 6769, Vitreous and porcelain enamels — Determination of surface scratch hardness according to the Mohs scale
ISO 13807, Vitreous and porcelain enamels — Determination of crack formation temperature in the thermal
shock testing of enamels for the chemical industry
ISO 15695, Vitreous and porcelain enamels — Determination of scratch resistance of enamel finishes
ISO 16474-1, Paints and varnishes — Methods of exposure to laboratory light sources — Part 1: General guidance
ISO 16474-2, Paints and varnishes — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
ISO 19496-1, Vitreous
...