EN 14525:2022

Ductile iron and steel wide tolerance couplings and flange adaptors for use with pipes of different materials: ductile iron, Grey iron, steel, PVC-U, PVC-O, PE, fibre-cement

EN 14525:2022

Name:EN 14525:2022   Standard name:Ductile iron and steel wide tolerance couplings and flange adaptors for use with pipes of different materials: ductile iron, Grey iron, steel, PVC-U, PVC-O, PE, fibre-cement
Standard number:EN 14525:2022   language:English language
Release Date:04-Oct-2022   technical committee:CEN/TC 203 - Cast iron pipes, fittings and their joints
Drafting committee:CEN/TC 203/WG 1 - Water pipelines under pressure   ICS number:23.040.60 - Flanges, couplings and joints

SLOVENSKI STANDARD
01-november-2022
Nadomešča:
SIST EN 14525:2005
Spojke in prirobnične prilagoditve široke uporabe za cevi iz različnih materialov:
duktilne litine, sive litine, jekla, PVC-U, PVC-O, PE, vlaknatega cementa
Ductile iron and steel wide tolerance couplings and flange adaptors for use with pipes of
different materials: ductile iron, Grey iron, steel, PVC-U, PVC-O, PE, fibre-cement
Großbereichskupplungen und Flanschadapter aus duktilem Gusseisen und Stahl zur
Verbindung von Rohren aus unterschiedlichen Werkstoffen: duktiles Gusseisen,
Grauguss, Stahl, PVC-U, PVC-O, PE, Faserzement
Manchons et adaptateurs de brides à larges tolérances en fonte ductile et acier destinés
à être utilisés avec des tuyaux faits de différents matériaux : fonte ductile, fonte grise,
acier, PVC-U, PVC-O, PE, fibre-ciment
Ta slovenski standard je istoveten z: EN 14525:2022
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14525
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 23.040.60 Supersedes EN 14525:2004
English Version
Ductile iron and steel wide tolerance couplings and flange
adaptors for use with pipes of different materials: ductile
iron, Grey iron, steel, PVC-U, PVC-O, PE, fibre-cement
Manchons et adaptateurs de brides à larges tolérances Großbereichskupplungen und Flanschadapter aus
en fonte ductile et acier destinés à être utilisés avec des duktilem Gusseisen und Stahl zur Verbindung von
tuyaux faits de différents matériaux : fonte ductile, Rohren aus unterschiedlichen Werkstoffen: duktiles
fonte grise, acier, PVC-U, PVC-O, PE, fibre-ciment Gusseisen, Grauguss, Stahl, PVC-U, PVC-O, PE,
Faserzement
This European Standard was approved by CEN on 8 August 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14525:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 6
4 Technical requirements . 10
4.1 General .10
4.1.1 Diameter range . 10
4.1.2 Surface condition and repairs . 10
4.1.3 Types of joints and interconnection . 11
4.1.4 Materials in contact with water intended for human consumption . 11
4.2 Dimensional requirements .12
4.2.1 Minimum wall thickness of ductile iron couplings and flange adaptors . 12
4.2.2 Minimum wall thickness of steel couplings and flange adaptors . 12
4.2.3 Joint gap and depth of engagement . 13
4.2.4 Angular deflection . 14
4.3 Material characteristics .14
4.3.1 Ductile iron . 14
4.3.2 Mild steel for couplings and flange adaptors (DN600 to DN800 only) . 14
4.3.3 Fastener for couplings and flange adaptors . 15
4.4 Coatings .15
4.5 Product information .15
4.5.1 Marking requirements. 15
4.5.2 Additional information . 16
4.6 Water tightness .16
4.6.1 Couplings and flange adaptors . 16
4.6.2 Joints . 16
5 Performance requirements for joints . 16
5.1 General .16
5.2 Pressure rating .17
5.3 Water tightness of flexible joints .17
5.3.1 General – performance tests principles . 17
5.3.2 Test conditions. 17
5.4 Restrained flexible joints .18
5.5 Long term hydrostatic strength test .21
5.5.1 PE pipes . 21
5.5.2 Pull out test at 25 °C for PE restrained joints . 21
5.5.3 PVC pipes . 22
5.6 Flanged joints .22
6 Test methods . 22
6.1 Tensile testing .22
6.1.1 Samples .2 2
6.1.2 Preparation of test bar .2 3
6.1.3 Apparatus and test method .2 3
6.1.4 Test results .2 3
6.2 Brinell hardness . 24
6.3 Routine water tightness test . 24
6.3.1 General.2 4
6.3.2 Air test .2 4
6.3.3 Hydrostatic pressure test .2 4
7 Performance tests . 24
7.1 Positive internal pressure joint water tightness . 24
7.1.1 Coupling .2 4
7.1.2 Flange adaptor .2 5
7.2 Negative internal pressure joint . 26
7.3 Dynamic internal pressure joint water tightness . 26
7.4 Long term hydrostatic strength test for joints for PE pipes . 27
7.4.1 Test piece .2 7
7.4.2 Test procedure .2 7
7.5 Pull out test at 25 °C for restrained joints for PE pipes . 27
7.5.1 Test assembly .2 7
7.5.2 Apparatus .2 7
7.5.3 Test procedure .2 7
7.6 Long term hydrostatic strength test for joints of fittings for PVC pipe . 28
7.6.1 Test piece .2 8
7.6.2 Test procedure .2 8
Annex
...

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