Plastics piping systems - Buried and above ground piping components for water and other liquids under pressure - Requirements and test/assessment methods for pipes and fittings

This European Standard specifies requirements for plastics pipes and fittings for pressure applications for water supply, drainage, sewerage and irrigation, as well as for any other pressure application in which other liquids are conveyed with the exception of water intended for human consumption.
It is intended to be used for buried or above-ground conveyance of water, raw water prior to treatment, waste water, water for general purposes, vacuum-operated soil and waste conveyance and other liquids under pressure, for both outside and inside buildings.
It gives the associated test/assessment methods.
This standard does not cover adhesives, joint sealings and gaskets.
NOTE 1   For this standard the term fitting includes the term joint as meant by mandate M 131.
NOTE 2   Products complying with this document may be used for the transport of water intended for human consumption if they comply with the relevant national, regional or local regulatory provisions applicable in the place of use. Compliance of a product with this document does not confer a presumption of fitness of the product for the transport of water intended for human consumption within the meaning of the Directive 89/106/EEC.
NOTE 3   In some countries products used for the transport of raw water have to comply with the same requirements as products used for the transport of water for human consumption.

Kunststoff-Rohrleitungssysteme - Bauteile für den Einsatz in erdverlegten und nicht erdverlegten Druckrohrleitungen für Wasser und andere Flüssigkeiten - Anforderungen und Prüf-/Bewertungsverfahren für Rohre und Formstücke

Diese Europäische Norm legt Anforderungen an Rohre und Formstücke aus Kunststoff für Druckrohrleitungs-systeme für die Wasserversorgung, Entwässerung, Abwasser und Bewässerung sowie für jede andere Anwen¬dung mit Flüssigkeiten unter Druck fest, ausgenommen die Verteilung von Wasser für den menschlichen Gebrauch.
Sie ist anzuwenden für den Transport von Wasser, Roh¬wasser, das zur Aufbe¬reitung von Trinkwasser verwendet wird, Abwasser, Brauchwasser, die Unter¬druck¬ent¬wässe¬rung und den Transport von anderen Flüssigkeiten unter Druck, in erd- und nicht erdverlegten Rohrleitungen, sowohl außerhalb als auch innerhalb von Gebäuden.
Sie enthält die erforderlichen Prüf-/Bewertungsverfahren.
Diese Norm gilt nicht für Klebstoffe und Dichtungen.
ANMERKUNG 1   Für die Anwendung dieser Norm beinhaltet der Begriff „Formstück“ den Begriff „Verbindung“ im Sinne von Mandat M/131.
ANMERKUNG 2   Produkte dürfen bei Übereinstimmung mit diesem Dokument für den Transport von Wasser für den mensch¬lichen Gebrauch verwendet werden, sofern sie die entsprechenden am Einsatzort geltenden nationalen, regio¬nalen oder örtlichen gesetzlichen Bestimmungen oder Empfehlungen erfüllen. Die Übereinstimmung eines Produktes mit diesem Dokument stellt keine Annahme der Gebrauchstauglichkeit des Produktes für den Transport von Wasser für den menschlichen Gebrauch im Sinne der Richtlinie 89/106/EWG dar.
ANMERKUNG 3   In einigen Ländern müssen Produkte für den Transport von Rohwasser denselben Anforderungen entsprechen wie Produkte, die für den Transport von Wasser für den menschlichen Gebrauch verwendet werden

Systèmes de canalisations en plastique - Composants de canalisations enterrées et aériennes pour eau et autres liquides avec pression - Exigences et méthodes d'essais/d'évaluation pour tubes et raccords

La présente Norme européenne spécifie les exigences relatives aux tubes et raccords en plastique destinés aux applications avec pression pour l’alimentation en eau, l’assainissement et l’irrigation, ainsi qu’à toutes les applications avec pression dans lesquelles d’autres liquides sont transportés, à l’exception de l’eau destinée à la consommation humaine. Elle est destinée aux applications, enterrées ou aériennes, de transport d’eau, d’eau brute avant traitement, d’eaux usées, d’eau à usages généraux, de transport d’eaux-vannes et d’eaux usées sous dépression et de transport d’autres liquides avec pression, à l’extérieur et à l’intérieur des bâtiments. Elle indique les méthodes d’essai/d’évaluation associées. La présente norme ne couvre pas les adhésifs, les garnitures de joints et les joints d’étanchéité. NOTE 1 Pour la présente norme, le terme « raccord » inclut le terme « joint » au sens donné par le mandat M/131. NOTE 2 Les produits conformes au présent document peuvent être utilisés pour le transport de l’eau destinée à la consommation humaine à condition d’être conformes aux réglementations nationales, régionales ou locales applicables au lieu d’utilisation. La conformité d’un produit au présent document ne confère pas une présomption d'aptitude du produit pour le transport de l'eau destinée à la consommation humaine au sens de la Directive 89/106/CEE. NOTE 3 Dans certains pays, les produits utilisés pour le transport de l’eau brute doivent satisfaire aux mêmes exigences que les produits utilisés pour l’eau destinée à la consommation humaine.

Cevni sistemi iz polimernih materialov - Podzemne in nadzemne cevne komponente za vodo in druge tekočine pod tlakom - Zahteve in preskusi/metode ocenjevanja za cevi in fitinge

General Information

Status
Not Published
Current Stage
4598 - Decision to abandon - Finalization for Vote
Due Date
09-Oct-2012
Completion Date
09-Oct-2012

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SLOVENSKI STANDARD
oSIST prEN 15014:2011
01-junij-2011
&HYQLVLVWHPLL]SROLPHUQLKPDWHULDORY3RG]HPQHLQQDG]HPQHFHYQH
NRPSRQHQWH]DYRGRLQGUXJHWHNRþLQHSRGWODNRP=DKWHYHLQSUHVNXVLPHWRGH
RFHQMHYDQMD]DFHYLLQILWLQJH

Plastics piping systems - Buried and above ground piping components for water and

other liquids under pressure - Requirements and test/assessment methods for pipes and

fittings

Kunststoff-Rohrleitungssysteme - Bauteile für den Einsatz in erdverlegten und nicht

erdverlegten Druckrohrleitungen für Wasser und andere Flüssigkeiten - Anforderungen

und Prüf-/Bewertungsverfahren für Rohre und Formstücke

Systèmes de canalisations en plastique - Composants de canalisations enterrées et

aériennes pour eau et autres liquides avec pression - Exigences et méthodes
d'essais/d'évaluation pour tubes et raccords
Ta slovenski standard je istoveten z: prEN 15014
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
23.040.45 Fitingi iz polimernih Plastics fittings
materialov
91.140.80 Drenažni sistemi Drainage systems
oSIST prEN 15014:2011 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 15014:2011
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oSIST prEN 15014:2011
EUROPEAN STANDARD
DRAFT
prEN 15014
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2011
ICS 23.040.20; 23.040.45 Will supersede EN 15014:2007
English Version
Plastics piping systems - Buried and above ground piping
components for water and other liquids under pressure -
Requirements and test/assessment methods for pipes and
fittings

Systèmes de canalisations en plastique - Composants de Kunststoff-Rohrleitungssysteme - Bauteile für den Einsatz

canalisations enterrées et aériennes pour eau et autres in erdverlegten und nicht erdverlegten Druckrohrleitungen

liquides avec pression - Exigences et méthodes für Wasser und andere Flüssigkeiten - Anforderungen und

d'essais/d'évaluation pour tubes et raccords Prüf-/Bewertungsverfahren für Rohre und Formstücke

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 155.

If this draft becomes a European Standard, 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.

This draft European Standard 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-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, 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

© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15014:2011: E

worldwide for CEN national Members.
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oSIST prEN 15014:2011
prEN 15014:2011 (E)
Contents Page

Foreword ..............................................................................................................................................................4

Introduction .........................................................................................................................................................5

1 Scope ......................................................................................................................................................6

2 Normative references ............................................................................................................................6

3 Terms, definitions and symbols ...........................................................................................................8

4 Requirements .........................................................................................................................................9

4.1 Reaction to fire .......................................................................................................................................9

4.2 External pressure strength ...................................................................................................................9

4.2.1 External pressure strength for thermoplastics pipes ........................................................................9

4.2.2 External pressure strength for glass-reinforced thermosetting pipes ............................................9

4.3 Internal pressure strength ....................................................................................................................9

4.3.1 Determination of nominal pressure PN ...............................................................................................9

4.3.2 Verification of pressure strength ...................................................................................................... 10

4.4 Dimensional tolerances ..................................................................................................................... 10

4.5 Tightness ............................................................................................................................................. 10

4.6 Durability ............................................................................................................................................. 10

4.6.1 Durability of internal pressure strength related to materials ......................................................... 10

4.6.2 Durability of internal pressure strength of pipes and fittings ........................................................ 10

4.6.3 Durability of tightness of elastomeric sealing connections .......................................................... 11

4.7 Release of dangerous substances .................................................................................................... 11

5 Test methods ....................................................................................................................................... 11

5.1 Reaction to fire of pipes and fittings ................................................................................................ 11

5.2 Determination of the nominal pressure ............................................................................................ 11

5.2.1 Determination of the nominal pressure PN for thermoplastics pipes and fittings ...................... 11

5.2.2 Determination of the nominal pressure PN for glass-reinforced thermosetting pipes ............... 11

5.2.3 Determination of the nominal pressure PN for multilayer pipes ................................................... 11

5.3 Internal pressure strength ................................................................................................................. 11

5.3.1 Internal pressure strength for thermoplastics pipes and fittings .................................................. 11

5.3.2 Internal pressure strength for glass-reinforced thermosetting pipes and fittings ...................... 12

5.3.3 Internal pressure strength for multilayer pipes ............................................................................... 12

5.4 Dimensional tolerances ..................................................................................................................... 12

5.5 Tightness ............................................................................................................................................. 12

5.6 Durability ............................................................................................................................................. 12

5.6.1 Durability of internal pressure strength related to materials ......................................................... 12

5.7 Determination of nominal stiffness of glass-reinforced thermosetting pipes ............................. 13

6 Evaluation of conformity .................................................................................................................... 13

6.1 General ................................................................................................................................................. 13

6.2 Initial Type Testing – Type Testing ................................................................................................... 13

6.2.1 General ................................................................................................................................................. 13

6.2.2 Test samples, testing and compliance criteria ................................................................................ 15

6.2.3 Test reports ......................................................................................................................................... 15

6.3 Factory production control (FPC) ..................................................................................................... 16

6.3.1 General ................................................................................................................................................. 16

6.3.2 Requirements ...................................................................................................................................... 16

6.3.3 Product specific requirements .......................................................................................................... 19

6.3.4 Procedure for modifications .............................................................................................................. 20

6.3.5 One-off products, pre-production products (e.g. prototypes) and products produced in

very low quantity................................................................................................................................. 20

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oSIST prEN 15014:2011
prEN 15014:2011 (E)

Annex A (informative) Product standards for buried and above-ground pressure piping systems

in plastics materials for water for general purposes, drainage, sewerage, irrigation and

other liquids ......................................................................................................................................... 22

Annex B (informative) Standards for assessment of conformity for buried and above-ground

pressure piping systems in plastics materials for water for general purposes, drainage,

sewerage, irrigation and other liquids .............................................................................................. 24

Annex ZA (informative) Clauses of this European Standard addressing the provisions of EU

Construction Products Directive ....................................................................................................... 25

ZA.1 Scope and relevant characteristics ................................................................................................... 25

ZA.2 Procedure for attestation of conformity of plastics pipes and fittings .......................................... 26

ZA.2.1 Systems of attestation of conformity ................................................................................................ 26

ZA.2.2 EC Certificate and Declaration of conformity ................................................................................... 28

ZA.3 CE marking and labelling.................................................................................................................... 30

ZA.3.1 CE marking requirements ................................................................................................................... 30

Bibliography ...................................................................................................................................................... 33

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oSIST prEN 15014:2011
prEN 15014:2011 (E)
Foreword

This document (prEN 15014:2011) 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.

This document has been prepared under the mandate M/131 "Pipes, tanks and ancillaries not in contact with

water intended for human consumption" given to CEN by the European Commission and the European Free

Trade Association and support essential requirements of EU Directives.

For the relationship with EU Directives, see informative Annex ZA, which is an integral part of this document.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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.
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oSIST prEN 15014:2011
prEN 15014:2011 (E)
Introduction

This European Standard specifies only those characteristics of pipes and fittings for pressure applications for

water supply, drainage, sewerage and irrigation, as well as for any other pressure application in which other

liquids are conveyed with the exception of water intended for human consumption that need to be known to

determine if the works in which these are to be installed can satisfy the essential requirements of the EU

Directive(s). Additional characteristics are specified in the documents listed in Annex A or in other appropriate

product specifications..

This harmonised European Standard covers plastics pipes and fittings under pressure. Valves are covered by

EN 15389 [1].
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oSIST prEN 15014:2011
prEN 15014:2011 (E)
1 Scope

This European Standard specifies requirements for plastics pipes and fittings for pressure applications for

water supply, drainage, sewerage and irrigation, as well as for any other pressure application in which other

liquids are conveyed with the exception of water intended for human consumption.

It is intended to be used for buried or above-ground conveyance of water, raw water prior to treatment, waste

water, water for general purposes, vacuum-operated soil and waste conveyance and other liquids under

pressure, for both outside and inside buildings.
It gives the associated test/assessment methods.
This standard does not cover adhesives, joint sealings and gaskets.

NOTE 1 For this standard the term fitting includes the term joint as meant by mandate M 131.

NOTE 2 Products complying with this document may be used for the transport of water intended for human

consumption if they comply with the relevant national, regional or local regulatory provisions applicable in the place of use.

Compliance of a product with this document does not confer a presumption of fitness of the product for the transport of

water intended for human consumption within the meaning of the Directive 89/106/EEC.

NOTE 3 In some countries products used for the transport of raw water have to comply with the same requirements as

products used for the transport of water for human consumption.
2 Normative references

The following referenced documents are indispensable for the application 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 681-1, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage

applications — Part 1: Vulcanized rubber

EN 681-2, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage

applications — Part 2: Thermoplastic elastomers

EN 681-4, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage

applications — Part 4: Cast polyurethane sealing elements

EN 713, Plastics piping systems — Mechanical joints between fittings and polyolefin pressure pipes — Test

method for leaktightness under internal pressure of assemblies subjected to bending

EN 911, Plastics piping systems — Elastomeric sealing ring type joints and mechanical joints for

thermoplastics pressure piping — Test method for leaktightness under external hydrostatic pressure

EN 1796, Plastics piping systems for water supply with or without pressure — Glass-reinforced thermosetting

plastics (GRP) based on unsaturated polyester resin (UP)

EN 12201-1, Plastics piping systems for water supply, and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 2: General

EN 12201-2, Plastics piping systems for water supply, and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 2: Pipes

EN 12201-3, Plastics piping systems for water supply, and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 3: Fittings
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oSIST prEN 15014:2011
prEN 15014:2011 (E)

EN 12201-5, Plastics piping systems for water supply, and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 5: Fitness for purpose of the system

EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using

test data from reaction to fire tests

EN 13823, Reaction to fire tests for building products — Building products excluding floorings exposed to the

thermal attack by a single burning item

EN 14364, Plastics piping systems for drainage and sewerage with or without pressure — Glass-reinforced

thermosetting plastics (GRP) based on unsaturated polyester resin (UP) — Specifications for pipes, fittings

and joints

EN 16000, Plastics piping systems — Systems within the building structure — Mounting and fixing of

components in the test apparatus to thermal attack by a single burning item

EN ISO 75-2, Plastics — Determination of temperature of deflection under load — Part 2: Plastics and

ebonite

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)

EN ISO 1167-2, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination

of the resistance to internal pressure — Part 2: Preparation of pipe test pieces (ISO 1167-2:2006)

EN ISO 1167-3, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination

of the resistance to internal pressure — Part 3: Preparation of components
(ISO 1167-3:2007)

EN ISO 1167-4, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination

of the resistance to internal pressure — Part 4: Preparation of assemblies
(ISO 1167-4:2007)

EN ISO 1452-2, Plastics piping systems for water supply and for buried and above-ground drainage and

sewerage under pressure — Unplasticized poly(vinyl chloride) (PVC-U) — Part 2: Pipes (ISO 1452-2:2009)

EN ISO 1452-3, Plastics piping systems for water supply and for buried and above-ground drainage and

sewerage under pressure — Unplasticized poly(vinyl chloride) (PVC-U) — Part 3: Fittings (ISO 1452-3:2009)

EN ISO 1452-5, Plastics piping systems for water supply and for buried and above-ground drainage and

sewerage under pressure — Unplasticized poly(vinyl chloride) (PVC-U) — Part 5: Fitness for purpose of the

system (ISO 1452-5:2009)

EN ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions

(ISO 3126:2005)

EN ISO 9080, Plastics piping and ducting systems — Determination of the long-term hydrostatic strength of

thermoplastics materials in pipe form by extrapolation (ISO 9080:2003)

EN ISO 10931, Plastics piping systems for industrial applications — Poly(vinylidene fluoride) (PVDF) -

Specifications for components and the system (ISO 10931:2005)

EN ISO 12162, Thermoplastics materials for pipes and fittings for pressure applications — Classification and

designation — Overall service (design) coefficient (ISO 12162:2009)

EN ISO 13783, Plastics piping systems — Unplasticized poly(vinyl chloride) (PVC-U) end-load-bearing

double socket joints — Test method for leaktightness and strength while subjected to bending and internal

pressure (ISO 13783:1997)
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oSIST prEN 15014:2011
prEN 15014:2011 (E)

EN ISO 13844, Plastics piping systems — Elastomeric-sealing-ring-type socket joints of unplasticized

poly(vinyl chloride) (PVC-U) for use with PVC-U pipes — Test method for leaktightness under negative

pressure (ISO 13844:2000)

EN ISO 13845, Plastics piping systems — Elastomeric-sealing-ring-type socket joints for use with

unplasticized poly(vinyl chloride) (PVC-U) pipes — Test method for leaktightness under internal pressure and

with angular deflection (ISO 13845:2000)

EN ISO 13846, Plastics piping systems — End-load-bearing and non-end-load-bearing assemblies and joints

for thermoplastics pressure piping — Test method for long-term leaktightness under internal water pressure

(ISO 13846:2000)

ISO 161-1, Thermoplastics pipes for the conveyance of fluids — Nominal outside diameters and nominal

pressures — Part 1: Metric series

ISO 580, Plastics piping and ducting systems — Injection-moulded thermoplastics fittings — Methods for

visually assessing the effects of heating

ISO 8521, Plastics piping systems — Glass-reinforced thermosetting plastics (GRP) pipes — Test methods

for the determination of the apparent initial circumferential tensile strength

ISO 8779, Plastics piping systems — Polyethylene (PE) pipes for irrigation — Specifications

ISO 9852, Unplasticized poly(vinyl chloride) (PVC-U) pipes — Dichloromethane resistance at specified

temperature (DCMT) — Test method

ISO 11357-3, Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature and

enthalpy of melting and crystallization

ISO 11357-6, Plastics — Differential scanning calorimetry (DSC) — Part 6: Determination of oxidation

induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)

ISO 13761, Plastics pipes and fittings — Pressure reduction factors for polyethylene pipeline systems for use

at temperature above 20 °C

ISO 14236, Plastics pipes and fittings — Mechanical-joint compression fittings for use with polyethylene

pressure pipes in water supply systems

ISO 16422, Pipes and joints made of oriented unplasticized poly(vinyl chloride) (PVC-O) for the conveyance

of water under pressure — Specifications

ISO 17456, Plastics piping systems — Multilayer pipes — Determination of long-term strength

ISO 21004, Plastics piping systems — Multilayer pipes and their joints, based on thermoplastics, for water

supply
3 Terms, definitions and symbols

For the purposes of this document, the following terms, definitions and symbols apply.

3.1
nominal size (DN)

numerical designation of the size of a component, other than a component designated by thread size, which is

a convenient round number approximately equal to the manufacturing dimension in millimetres (mm)

NOTE This can apply to either the internal diameter (DN/ID) or external diameter (DN/OD).

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oSIST prEN 15014:2011
prEN 15014:2011 (E)
3.2
nominal outside diameter

specified diameter, in millimetres, assigned to a nominal size (for thermoplastics pipes and fittings only)

3.3
nominal pressure (PN)

numerical designation used for reference purposes related to the mechanical characteristics of the component

of a piping system

NOTE For plastic piping systems conveying water it corresponds to the maximum continuous operating pressure in

bar, which can be sustained with water at 20 °C for thermoplastics and 35 °C for glass-reinforced thermosetting materials,

based on the minimum design coefficient.
3.4
Connection
assembly of pipe(s) and fitting(s)
4 Requirements
4.1 Reaction to fire

The contribution to fire development of products falling under the scope of this European standard is verified

according to the provisions of clause 5.1.
Test results shall be classified according to EN 13501-1.
4.2 External pressure strength
4.2.1 External pressure strength for thermoplastics pipes

The external pressure strength of thermoplastics pipes is deemed to be satisfied by the internal pressure

strength as given in 4.3.

NOTE Guidance on limitations for the use in vacuum-operated soil and waste pipes may be found in the

manufacturers technical file.
4.2.2 External pressure strength for glass-reinforced thermosetting pipes

The external pressure strength of glass-reinforced thermosetting pipes shall be determined in accordance with

5.7 and shall be declared as the nominal stiffness SN.
4.3 Internal pressure strength
4.3.1 Determination of nominal pressure PN

For thermoplastics materials the internal pressure strength of the pipe and fitting shall be determined in

accordance with 5.2.1 and shall be declared by the manufacturer as nominal pressure PN in accordance with

ISO 161-1 and including PN 25 where applicable.

The design coefficient shall not be less than that specified in EN ISO 12162 for the relevant material.

Depending on the intended use, product standards as referred to in clause 2 define the design coefficient to

be applied.
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For glass-reinforced thermosetting materials the internal pressure strength of the pipe or fitting shall be

determined in accordance with 5.2.2 and shall be declared by the manufacturer as nominal pressure in

accordance with EN 1796 or EN 14364.

For multilayer pipes the internal pressure strength shall be determined and declared by the manufacturer in

accordance with 5.2.3.
The design coefficient may also be enhanced by derating the PN.
4.3.2 Verification of pressure strength

The verification of the internal pressure strength of pipes and fittings shall be done in accordance with 5.3.

4.4 Dimensional tolerances

The manufacturer shall declare the relevant dimensional tolerances for the connection of pipes and fittings, by

means of:

a) reference to a specific European standard as given in Clause 2 or Annex A, as applicable,

b) in the absence of a), reference to a specific European product specification,
c) in the absence of a) and b), reference to an International Standard,

d) in the absence of a), b), and c), by stating the values of his own specification and associated connecting

method.

Dimensions shall be measured in accordance with 5.4 and shall be within the declared tolerances.

4.5 Tightness

For products in accordance with this standard, tightness is required. Pipes and fittings covered by this

standard and having passed the type testing in accordance with the evaluation of conformity clause, are

deemed to be tight.

Connections between pipes and fittings shall be tested in accordance with 5.5. No leakage shall occur during

the test period.
4.6 Durability
4.6.1 Durability of internal pressure strength related to materials

The durability of internal pressure strength related to materials, from which the pipes and fittings are

manufactured, shall be assessed by testing in accordance with 5.6.1.
4.6.2 Durability of internal pressure strength of pipes and fittings

Pipes and fittings for which the nominal pressure PN is declared in accordance with 4.3.1, and which have

been made of material meeting the requirements of 5.6.1, are deemed to have a reasonable economic

working life.

NOTE The piping components are expected to last at least the lifetime of the network where they are installed.

If the nature of the liquid is different from water or this liquid or water has a higher temperature than 20 °C

(35 °C for glass-reinforced thermosetting materials), guidance for de-rating the pressure shall be in

accordance with the appropriate following standards: EN ISO 1452-2 for PVC-U, ISO 16422 for PVC-O,

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ISO 13761 or EN 12201-1 for PE, EN 1796 and EN 14364 for glass-reinforced thermosetting materials and

ISO 17456 or ISO 21004 for multilayer piping systems.
Instead of de-rating the pressure, a shorter working life may be declared.
4.6.3 Durability of tightness of elastomeric sealing connections

The tightness of elastomeric sealing connections is deemed to be durable if the sealing element conforms to

EN 681-1, EN 681-2 or EN 681-4, as applicable.
4.7 Release of dangerous substances
The products covered by this standard should not
...

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