SIST EN 14125:2025

Thermoplastic and flexible metal pipework for underground installation at petrol filling stations

This document specifies requirements for underground pipework systems used to transfer liquid fuels and their vapours at petrol filling stations. Minimum performance requirements covering fitness for purpose, safety and environmental protection are given.
This document is applicable to pipework made from thermoplastics, which can include some degree of reinforcement, and to flexible metal pipework. It does not apply to fibre reinforced thermosets, commonly referred to as glass fibre reinforced plastic (GRP), nor to rigid metals.
This document is applicable to:
-   delivery pipes from tanks to dispensers, including positive pressure, vacuum suction and siphon modes;
-   fill pipes from road tankers to tanks;
-   vapour recovery and vent pipework;
-   pipework for secondary containment;
-   fittings.
It does not apply to pipework for use with liquefied petroleum gas.

Thermoplastische und flexible metallene Rohrleitungen für erdverlegte Installationen für Tankstellen

Dieses Dokument legt Anforderungen an erdverlegte Rohrleitungssysteme fest, die für die Beförderung von flüssigen Kraftstoffen und deren Dämpfen an Tankstellen eingesetzt werden. Angegeben sind Mindestleistungsanforderungen an Gebrauchstauglichkeit, Sicherheit und Umweltschutz.
Dieses Dokument ist anwendbar für Rohrleitungen aus thermoplastischen Kunststoffen, die einen bestimmten Anteil an Verstärkungswerkstoffen enthalten können, und für flexible Rohrleitungen aus Metall. Es ist nicht anwendbar für biegesteife Metalle und für faserverstärkte Duroplaste, üblicherweise als glasfaserverstärkte Kunststoffe (GFK) bezeichnet.
Dieses Dokument ist anwendbar für:
-   Förderrohre von Tanks zu Zapfsäulen, einschließlich in Überdruck , Vakuumsaug- und Siphon-Betriebsart;
-   Füllleitungen von Straßentankfahrzeugen zu Tanks;
-   Gasrückführ- und Entlüftungsleitungen;
-   Rohrleitungen für Schutzrohre;
-   Formstücke.
Es ist nicht anwendbar für Rohrleitungen, die für den Transport von Flüssiggas verwendet werden.

Tuyauteries enterrées thermoplastiques et tuyauteries métalliques flexibles pour stations-service

Le présent document spécifie les exigences pour les systèmes de tuyauterie enterrée utilisés pour le transport de carburants liquides et leurs vapeurs vers les stations service. Les exigences minimales de performance en matière d'aptitude à l'emploi, de sécurité et de protection de l'environnement sont indiquées.
Le pésent document s'applique aux tuyauteries enterrées thermoplastiques, qui peuvent comporter un certain degré de renforcement, et aux tuyauteries métalliques flexibles. Il ne s'applique pas aux thermodurcissables renforcés de fibres, communément appelés plastiques renforcés de fibres de verre (PRV), ni aux métaux rigides.
Le présent document s'applique :
-   aux tuyaux de distribution des réservoirs aux distributeurs, y compris les modes de pression positive, d'aspiration par le vide et de siphon ;
-   aux tuyaux de remplissage des camions-citernes vers les réservoirs ;
-   à la récupération des vapeurs et la tuyauterie d'aération ;
-   à la tuyauterie de confinement secondaire ;
-   aux raccords.
Il ne s'applique pas aux tuyauteries destinées à être utilisées avec des gaz de pétrole liquéfiés.

Cevovodi iz kovinskih gibljivih cevi in cevi iz plastomerov za podzemne napeljave za bencinske servise

General Information

• Status: Published
• Public Enquiry End Date: 02-Oct-2023
• Publication Date: 08-Apr-2025
• ICS: 23.040.10 - Iron and steel pipes
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• ICS: 77.020 - Production of metals
• ICS: 83.140.30 - Plastics pipes and fittings for non fluid use
• Technical Committee: TLP - Pressure vessels
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Apr-2025
• Due Date: 09-Jun-2025
• Completion Date: 09-Apr-2025
• Ref Project: EN 14125:2025 - Thermoplastic and flexible metal pipework for underground installation at petrol filling stations

Relations

• Replaces: SIST EN 14125:2013 - Thermoplastic and flexible metal pipework for underground installation at petrol filling stations
• Effective Date: 01-May-2025

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2025
Nadomešča:
SIST EN 14125:2013
Cevovodi iz kovinskih gibljivih cevi in cevi iz plastomerov za podzemne napeljave
za bencinske servise
Thermoplastic and flexible metal pipework for underground installation at petrol filling
stations
Thermoplastische und flexible metallene Rohrleitungen für erdverlegte Installationen für
Tankstellen
Tuyauteries enterrées thermoplastiques et tuyauteries métalliques flexibles pour
stations-service
Ta slovenski standard je istoveten z: EN 14125:2025
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
83.140.30 Polimerne cevi in fitingi za Plastics pipes and fittings for
snovi, ki niso tekočine non fluid use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14125
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2025
EUROPÄISCHE NORM
ICS 75.200 Supersedes EN 14125:2013
English Version
Thermoplastic and flexible metal pipework for
underground installation at petrol filling stations
Tuyauteries enterrées thermoplastiques et en métaux Thermoplastische und flexible metallene
flexibles pour stations service Rohrleitungen für erdverlegte Installationen für
Tankstellen
This European Standard was approved by CEN on 20 January 2025.

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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14125:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Classes and dimensions . 9
4.1 Classes of pipework. 9
4.2 Fittings . 10
4.3 Dimensional tolerances . 10
5 Physical properties . 10
5.1 Pressure . 10
5.1.1 General. 10
5.1.2 Hydrostatic pressure . 10
5.1.3 Vacuum . 11
5.1.4 Cyclic pressure . 11
5.2 Estimated working life . 11
5.3 Temperature. 11
5.4 Mechanical tests . 12
5.4.1 Crush test . 12
5.4.2 Bend radius test . 12
5.4.3 Impact test . 12
5.4.4 Puncture test . 12
5.4.5 Pull test . 13
5.5 Fuel tests . 13
5.5.1 Fuel compatibility . 13
5.5.2 Fuel permeability . 13
5.5.3 Swelling . 14
5.6 Static electricity . 14
5.6.1 General. 14
5.6.2 Requirements for insulating plastic pipe systems . 14
5.6.3 Requirements for plastic pipe systems with conductive or dissipative linings . 14
5.7 Weathering . 14
5.8 Corrosion resistance . 14
5.9 Summary of tests . 15
6 Production control . 16
7 Testing . 16
7.1 General items referring to the test methods . 16
7.1.1 Selection of test samples from a product range . 16
7.1.2 Number of samples . 16
7.1.3 Tests following conditioning . 16
7.1.4 Combined tests . 17
7.1.5 Procedure for retesting . 17
7.1.6 Test fuels . 18
7.2 Test methods . 18
7.2.1 Hydrostatic pressure . 18
7.2.2 Vacuum test . 19
7.2.3 Cyclic pressure test . 19
7.2.4 Crush test . 20
7.2.5 Bend radius test . 20
7.2.6 Impact test . 21
7.2.7 Puncture resistance . 21
7.2.8 Fuel compatibility test . 21
7.2.9 Fuel permeability test . 22
7.2.10 Longitudinal swelling . 23
7.2.11 Pull-out test . 23
7.2.12 Fitting pull-out test . 24
8 Markings on pipe and fittings . 24
9 Manuals . 26
9.1 Product manual . 26
9.2 Installation manuals . 26
10 Records . 26
Annex A (informative) A-deviations . 27
Annex B (informative) Static electricity . 29
Annex C (informative) Environmental aspects . 33
Bibliography . 36

European foreword
This document (EN 14125:2025) has been prepared by Technical Committee CEN/TC 393 “Equipment
for storage tanks and for service stations”, the secretariat of which is held by DIN.
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 September 2025, and conflicting national standards shall
be withdrawn at the latest by September 2025.
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 will supersede EN 14125:2013.
— new test fuels added;
— Annex C for environmental aspects added.
Any feedback and questions on this document should
...