EN 12666-1:2005/FprA1
(Amendment)Plastics piping systems for non-pressure underground drainage and sewerage - Polyethylene (PE) - Part 1: Specifications for pipes, fittings and the system
Plastics piping systems for non-pressure underground drainage and sewerage - Polyethylene (PE) - Part 1: Specifications for pipes, fittings and the system
This Part of EN 12666 specifies the requirements for pipes, fittings and the system of polyethylene (PE) piping systems intended to be used for - non-pressure underground drainage and sewerage outside the building structure (application area code "U"), and - non-pressure underground drainage and sewerage for both buried in the ground within the building structure (application area code "D") and outside the building structure. This is reflected in the marking of products by "U" and "UD". It also specifies the test parameters for the test methods referred to in this European Standard. This European Standard covers a range of nominal sizes, a range of pipe series/stiffness classes and gives recommendations concerning colours. NOTE 1 It is the responsibility of the purchaser or specifier to make the appropriate selection from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. In conjunction with CEN/TS 12666-2 [1] it is applicable to PE pipes and fittings, their joints and to joints with components of other plastics and non-plastics materials intended to be used for buried piping systems for non-pressure drainage and sewerage.This European Standard is applicable to PE pipes with or without an integral socket. The fittings can be manufactured by injection-moulding or be fabricated from pipes and/or mouldings. This European Standard is applicable to PE pipes and fittings for the following types of joints: - elastomeric ring seal joints; - butt fused joints; - electrofusion joints; - mechanical joints. NOTE 2 Requirements and limiting values for application area code "D" are given in Tables 3, 6 and Table 12. NOTE 3 Pipes, fittings and other components conforming to any of the plastics product standards listed in the bibliography may be used with pipes and fittings conforming to this European Standard, provided they conform to the requirements for joint dimensions given in Clause 6
Kunststoff-Rohrleitungssysteme für erdverlegte drucklose Abwasserkanäle und -leitungen - Polyethylen (PE) — Teil 1: Anforderungen an Rohre, Formstücke und das Rohrleitungssystem
Systèmes de canalisations en plastique pour les branchements et les collecteurs d'assainissement sans pression enterrés - Polyéthylène (PE) - Partie 1: Spécifications pour les tubes, les raccords et le système
Cevni sistemi iz polimernih materialov za odpadno vodo in kanalizacijo, ki delujejo po težnostnem principu in so položeni v zemljo - Polietilen (PE) – 1. del: Specifikacije za cevi, fitinge in sistem
General Information
- Status
- Not Published
- Technical Committee
- CEN/TC 155 - Plastics piping systems and ducting systems
- Current Stage
- 5060 - Closure of Vote - Formal Approval
- Start Date
- 14-Jun-2011
- Due Date
- 23-Aug-2012
- Completion Date
- 14-Jun-2011
Relations
- Effective Date
- 19-Jan-2023
- Effective Date
- 28-Nov-2009
Overview
EN 12666-1:2005/FprA1 is a European standard established by CEN for plastics piping systems using polyethylene (PE), specifically designed for non-pressure underground drainage and sewerage applications. It sets the requirements for pipes, fittings, and systems installed both outside building structures (application area code "U") and buried within buildings (application area code "D"). Products are marked "U" or "UD" to denote their use cases. This standard outlines performance, dimensional, and physical requirements, and provides the basis for quality assurance and reliability in underground sewer and drainage installations.
Key Topics
- Product Scope: Includes specifications for PE pipes, fittings, and their jointing systems designed for gravity-driven, non-pressure underground applications.
- Marking and Application Codes: Products are marked with "U" for external use and "UD" for dual use (inside and outside building structures), ensuring clear identification for specifiers and installers.
- Jointing Methods: The standard recognizes several jointing types to suit project requirements:
- Elastomeric ring seal joints
- Butt fused joints
- Electrofusion joints
- Mechanical joints
- Sizing and Dimensions: Covers a wide range of nominal diameters (including new additions such as 560 mm and 710 mm), pipe series (S-series), and stiffness classes (with the introduction of SN 16 for demanding installations).
- Material Requirements: Supports the use of reprocessable and recyclable materials under defined conditions, promoting sustainability.
- Testing and Compliance: Specifies mechanical and physical test parameters (referenced by appropriate EN and ISO standards) for ring stiffness, wall thickness, pipe and socket dimensions, and watertightness.
- Compatibility: Provides recommendations on colours and fitment with various components, facilitating integration with other plastics and non-plastics systems.
Applications
The EN 12666-1:2005/FprA1 standard is widely applicable in the construction, civil engineering, and municipal infrastructure sectors. Typical uses include:
- Urban and municipal sewerage networks: Durable and reliable systems for transporting waste water outside and within building grounds.
- Domestic underground drainage: Suitable for property boundary drainage connections, garden drainage, and under-building installations.
- Industrial facilities: Non-pressure waste collection and transport, compatible with various industrial waste flows.
- Infrastructure upgrades and retrofitting: Supports systems integration and expansion due to compatibility with standardized fittings and pipes of different materials.
By ensuring that pipes and fittings meet stringent performance characteristics, the standard helps prevent leaks, environmental contamination, and system failures in underground drainage applications.
Related Standards
Complementary and related European standards include:
- EN 1401-1: PVC-U piping for non-pressure underground drainage and sewerage
- EN 13476 series: Structured-wall piping systems for PE, PP, and PVC-U
- EN 1852-1: PP piping for non-pressure underground drainage and sewerage
- EN 1519-1: PE piping for soil and waste discharge inside buildings
- EN ISO 9969: Test method for ring stiffness
- CEN/TS 14541: Reprocessable and recyclable plastics materials usage
- EN ISO 1167-1: Resistance to internal pressure test method for thermoplastics pipes
These related standards ensure compatibility, interoperability, and continuous improvement in the design and testing of plastic piping systems for drainage and sewerage.
Practical Value
Adoption of EN 12666-1:2005/FprA1 delivers clear benefits:
- Quality assurance: Ensures piping system reliability and regulatory compliance.
- Design flexibility: Wide dimensional and stiffness options to suit varied soil and loading conditions.
- Sustainability: Allows for use of recyclable and reprocessable materials.
- Safety and performance: Rigorous testing to minimize the risk of leaks, blockages, or system failures.
- Market acceptance: Facilitates alignment with national and EU infrastructure requirements, supporting cross-border trade and installation consistency.
Get Certified
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DIBt (Deutsches Institut für Bautechnik)
German Institute for Building Technology.
DIN CERTCO
DIN Group product certification.
Zavod za gradbeništvo Slovenije (ZAG) - Inšpekcija
ZAG inspection body for construction products, structures, and materials.
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Frequently Asked Questions
EN 12666-1:2005/FprA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Plastics piping systems for non-pressure underground drainage and sewerage - Polyethylene (PE) - Part 1: Specifications for pipes, fittings and the system". This standard covers: This Part of EN 12666 specifies the requirements for pipes, fittings and the system of polyethylene (PE) piping systems intended to be used for - non-pressure underground drainage and sewerage outside the building structure (application area code "U"), and - non-pressure underground drainage and sewerage for both buried in the ground within the building structure (application area code "D") and outside the building structure. This is reflected in the marking of products by "U" and "UD". It also specifies the test parameters for the test methods referred to in this European Standard. This European Standard covers a range of nominal sizes, a range of pipe series/stiffness classes and gives recommendations concerning colours. NOTE 1 It is the responsibility of the purchaser or specifier to make the appropriate selection from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. In conjunction with CEN/TS 12666-2 [1] it is applicable to PE pipes and fittings, their joints and to joints with components of other plastics and non-plastics materials intended to be used for buried piping systems for non-pressure drainage and sewerage.This European Standard is applicable to PE pipes with or without an integral socket. The fittings can be manufactured by injection-moulding or be fabricated from pipes and/or mouldings. This European Standard is applicable to PE pipes and fittings for the following types of joints: - elastomeric ring seal joints; - butt fused joints; - electrofusion joints; - mechanical joints. NOTE 2 Requirements and limiting values for application area code "D" are given in Tables 3, 6 and Table 12. NOTE 3 Pipes, fittings and other components conforming to any of the plastics product standards listed in the bibliography may be used with pipes and fittings conforming to this European Standard, provided they conform to the requirements for joint dimensions given in Clause 6
This Part of EN 12666 specifies the requirements for pipes, fittings and the system of polyethylene (PE) piping systems intended to be used for - non-pressure underground drainage and sewerage outside the building structure (application area code "U"), and - non-pressure underground drainage and sewerage for both buried in the ground within the building structure (application area code "D") and outside the building structure. This is reflected in the marking of products by "U" and "UD". It also specifies the test parameters for the test methods referred to in this European Standard. This European Standard covers a range of nominal sizes, a range of pipe series/stiffness classes and gives recommendations concerning colours. NOTE 1 It is the responsibility of the purchaser or specifier to make the appropriate selection from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. In conjunction with CEN/TS 12666-2 [1] it is applicable to PE pipes and fittings, their joints and to joints with components of other plastics and non-plastics materials intended to be used for buried piping systems for non-pressure drainage and sewerage.This European Standard is applicable to PE pipes with or without an integral socket. The fittings can be manufactured by injection-moulding or be fabricated from pipes and/or mouldings. This European Standard is applicable to PE pipes and fittings for the following types of joints: - elastomeric ring seal joints; - butt fused joints; - electrofusion joints; - mechanical joints. NOTE 2 Requirements and limiting values for application area code "D" are given in Tables 3, 6 and Table 12. NOTE 3 Pipes, fittings and other components conforming to any of the plastics product standards listed in the bibliography may be used with pipes and fittings conforming to this European Standard, provided they conform to the requirements for joint dimensions given in Clause 6
EN 12666-1:2005/FprA1 is classified under the following ICS (International Classification for Standards) categories: 23.040.01 - Pipeline components and pipelines in general; 91.140.80 - Drainage systems; 93.030 - External sewage systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12666-1:2005/FprA1 has the following relationships with other standards: It is inter standard links to EN 12666-1:2005+A1:2011, EN 12666-1:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12666-1:2005/FprA1 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2010
Cevni sistemi iz polimernih materialov za odpadno vodo in kanalizacijo, ki delujejo
po težnostnem principu in so položeni v zemljo - Polietilen (PE) – 1. del:
Specifikacije za cevi, fitinge in sistem
Plastics piping systems for non-pressure underground drainage and sewerage -
Polyethylene (PE) - Part 1: Specifications for pipes, fittings and the system
Kunststoff-Rohrleitungssysteme für erdverlegte drucklose Abwasserkanäle und -
leitungen - Polyethylen (PE) - Teil 1: Anforderungen an Rohre, Formstücke und das
Rohrleitungssystem
Systèmes de canalisations en plastique pour les branchements et les collecteurs
d'assainissement sans pression enterrés - Polyéthylène (PE) - Partie 1: Spécifications
pour les tubes, les raccords et le système
Ta slovenski standard je istoveten z: EN 12666-1:2005/prA1
ICS:
23.040.01 Deli cevovodov in cevovodi Pipeline components and
na splošno pipelines in general
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
DRAFT
EN 12666-1:2005
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
March 2010
ICS 23.040.01; 93.030
English Version
Plastics piping systems for non-pressure underground drainage
and sewerage - Polyethylene (PE) - Part 1: Specifications for
pipes, fittings and the system
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für erdverlegte drucklose
branchements et les collecteurs d'assainissement sans Abwasserkanäle und -leitungen - Polyethylen (PE) - Teil 1:
pression enterrés - Polyéthylène (PE) - Partie 1: Anforderungen an Rohre, Formstücke und das
Spécifications pour les tubes, les raccords et le système Rohrleitungssystem
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 155.
This draft amendment A1, if approved, will modify the European Standard EN 12666-1:2005. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12666-1:2005/prA1:2010: E
worldwide for CEN national Members.
EN 12666-1:2005/prA1:2010 (E)
Contents Page
1 Changes to foreword .4
2 Change to Clause 1 Scope .4
3 Changes to Clause 2 Normative references .4
4 Change to 3.3 Abbreviations .4
5 Change to 4.2 Reprocessable and recyclable material .4
6 Changes to 4.3 Melt mass-flow rate .5
7 Changes to 6.2.1 Outside diameter .5
8 Changes to 6.2.3 wall thickness .5
9 Changes to 6.4.1.1 Diameters and length .7
10 Change to 6.4.1.2 Wall thicknesses of sockets .7
11 Changes to 6.4.3 Electrofusion sockets .8
12 Changes to 7.1 Mechanical characteristics of pipes .8
13 Changes to 8.2 Physical characteristics of fittings .9
14 Changes to Clause 9 Performance requirements .9
15 Changes to Clause 10 Sealing rings .9
16 Changes to Clause 11 Marking .9
17 Changes to 11.2 Minimum required marking of pipes .9
18 Changes to 11.3 Minimum required marking of fittings .9
19 Add a new Annex B .9
20 Change to Bibliography . 11
EN 12666-1:2005/prA1:2010 (E)
Foreword
This document (EN 12666-1:2005/prA1:2010) has been prepared by Technical Committee CEN/TC 155
“Plastics piping systems and ducting systems”, the secretariat of which is held by NEN.
This document is currently submitted to the CEN Enquiry.
The draft Amendment contains changes that have been agreed by CEN/TC 155 to harmonize the
requirements in the drainage and sewerage standards.
The main changes in the revised document are:
two new dimensions, 560 mm and 710 mm are introduced;
a new ring stiffness class SN 16 is introduced;
updating of the references in Clause 2;
introduction of S-series in 3.3;
introduction of S-series, a new footnote a) and a new NOTE in Table 3;
introduction of a new watertightness test for fabricated fittings;
deletion of Long Term Performance of TPE seals – Table 12 and 10.3;
corrections of misprints in Tables 13 and 14 Marking of pipes and fittings;
introduction of a new informative Annex B Product standards of components that can be connected
to components conforming to this standard;
updating and modification of the Bibliography.
EN 12666-1:2005/prA1:2010 (E)
Amendments to EN 12666-1:2005
1 Changes to foreword
In paragraph 7 delete list item 3 and replace list item 2 with the following:
"Part 2: Guidance for the assessment of conformity (CEN Technical Report)"
2 Change to Clause 1 Scope
Change the reference in the text below Note 1 to the following:
"CEN/TR 12666-2"
3 Changes to Clause 2 Normative references
Add the following references:
"CEN/TS 14541:2007, Plastics pipes and fittings for non-pressure applications — Utilisation of non-virgin
PVC-U, PP and PE materials"
"EN ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids —
Determination of the resistance to internal pressure — Part 1: General method (ISO 1167-1:2006)"
Delete the following references:
"EN 921, EN 921:1994, Plastics piping systems — Thermoplastics pipes — Determination of resistance
to internal pressure at constant temperature"
"EN 1989, Thermoplastics piping systems — Joints for buried non-pressure sewerage applications —
Test method for long-term sealing performance of joints with thermoplastic elastomer (TPE) seals by
estimating the sealing pressure"
4 Change to 3.3 Abbreviations
Add the following abbreviation:
"S :pipe series"
5 Change to 4.2 Reprocessable and recyclable material
Add the following text between the words permitted and provided in paragraph two:
"according to the rules in CEN/TS 14541"
EN 12666-1:2005/prA1:2010 (E)
6 Changes to 4.3 Melt mass-flow rate
Replace the following text:
"when tested in accordance with EN ISO 1133:2005, condition T (temperature: 190 °C; loading mass: 5
kg)."
by the following:
"The MFR of the base material shall be tested in accordance with EN ISO 1133, using the test
parameters: temperature 190 ºC and loading mass 5 kg."
7 Changes to 6.2.1 Outside diameter
Add dimensions 560 and 710 to Table 2 as follows:
Table 2 — Mean outside diameters
Dimensions in millimetres
Nominal size Nominal outside Mean outside diameter
DN/OD diameter
d d d
n em,min em,max
110 110 110,0 111,0
125 125 125,0 126,2
160 160 160,0 161,5
200 200 200,0 201,8
250 250 250,0 252,3
315 315 315,0 317,9
355 355 355,0 358,2
400 400 400,0 403,6
450 450 450,0 454,1
500 500 500,0 504,5
560 560 560,0 565,0
630 630 630,0 635,7
710 710 710,0 716,4
800 800 800,0 807,2
1 000 1 000 1 000,0 1 009,0
1 200 1 200 1 200,0 1 210,0
1 400 1 400 1 400,0 1 410,0
1 600 1 600 1 600,0 1 610,0
8 Changes to 6.2.3 wall thickness
Delete note below Table 3.
Add dimensions 560 and 710, S-series and SN 16 to Table 3 as follows:
EN 12666-1:2005/prA1:2010 (E)
Table 3 — Wall thi
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