SIST EN 1254-8:2014
(Main)Copper and copper alloys - Plumbing fittings - Part 8: Fittings with press ends for use with plastics and multilayer pipes
Copper and copper alloys - Plumbing fittings - Part 8: Fittings with press ends for use with plastics and multilayer pipes
This European Standard specifies materials and test requirements for fittings of copper and copper alloys. This part of EN 1254 specifies press end connections with or without plating or coating in the size range 10 mm to 110 mm for the purpose of joining plastics and multilayer pipes for use in hot and cold water systems according to EN 806, which are designed for service lifetime up to fifty years, as well as heating and cooling systems or gas systems, including fuel gas systems. Fittings may comprise a combination of end types, specified in this European Standard, EN 1254, or other standards, providing they are suitable for the fluid / gas being conveyed. The European Standard establishes a designation system for the fittings. This European Standard is applicable to press fittings for joining the following plastics and multilayer pipes: EN ISO 15874, Plastics piping systems for hot and cold water installations - Polypropylene (PP); EN ISO 15875, Plastics piping systems for hot and cold water installations - Crosslinked polyethylene (PE-X); EN ISO 15876, Plastics piping systems for hot and cold water installations - Polybutylene (PB); EN ISO 15877, Plastics piping systems for hot and cold water installations - Chlorinated poly (vinyl chloride) (PVC-C); EN ISO 21003, Multilayer piping systems for hot and cold water installations inside buildings; EN ISO 22391, Plastics piping systems for hot and cold water installations - Polyethylene of raised temperature resistance (PE-RT); ISO 17484, Plastics piping systems - Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa). Fittings may be suitable for joining other pipes provided the fitting joint with the specified pipe meets the requirements of this European Standard and the relevant pipe standard.
Kupfer und Kupferlegierungen - Fittings - Teil 8: Pressfittings für den Einsatz mit Kunststoff- und Mehrschichtverbundrohren
Diese Europäische Norm legt Werkstoffe und Prüfanforderungen für Fittings aus Kupfer und Kupferlegie-rungen fest.
Dieser Teil der EN 1254 legt Pressfittingverbindungen mit oder ohne galvanischem oder nichtgalvanischem Überzug in einem Nennweitenbereich von 10 mm bis 110 mm fest, die für das Verbinden von Kunststoff- und Mehrschichtverbundrohren für die Verwendung in Warm- und Kaltwassersystemen nach EN 806 für eine Lebensdauer von bis zu fünfzig Jahren sowie Heizungs- und Kühlanlagen oder Gasanlagen, einschließlich Flüssiggasanlagen, vorgesehen sind.
Fittings können mit einer Kombination von Anschlusstypen versehen sein, die entweder in dieser Euro-päischen Norm EN 1254 oder in anderen Normen festgelegt sind, sofern diese für das durchgeleitete Medium/Gas geeignet sind.
Die Europäische Norm legt ein Bezeichnungssystem für die Fittings fest.
Diese Europäische Norm gilt für Pressfittings für das Verbinden der folgenden Kunststoff- und Mehrschicht-verbundrohre:
EN ISO 15874, Kunststoff-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation — Polypropylen (PP)
EN ISO 15875, Kunststoff-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation — Vernetztes Poly-ethylen (PE-X)
EN ISO 15876, Kunststoff-Rohrleitungssysteme die für Warm- und Kaltwasserinstallation — Polybuten (PB)
EN ISO 15877, Kunststoff-Rohrleitungssysteme die für Warm- und Kaltwasserinstallation — Chloriertes Polyvinylchlorid (PVC-C)
EN ISO 21003, Mehrschichtverbund-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation innerhalb von Gebäuden
EN ISO 22391, Kunststoff-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation — Polyethylen erhöhter Temperaturbeständigkeit (PE-RT)
ISO 17484, Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa)
Fittings können für das Verbinden anderer Rohre geeignet sein, sofern die Fittingverbindung mit dem festge-legten Rohr den Anforderungen dieser Europäischen Norm und der für das jeweilige Rohr geltenden Norm entspricht.
Cuivre et alliages de cuivre - Raccords - Partie 8 : Raccords à sertir pour tuyaux en plastique et tubes multicouches
La présente Norme européenne spécifie les matériaux et les prescriptions d'essai concernant les raccords en cuivre et alliages de cuivre.
La présente partie de l'EN 1254 spécifie les raccordements à sertir avec ou sans placage ou revêtement, dans la gamme de dimension de 10 mm à 110 mm, permettant le raccordement de tuyaux en plastique et de tubes multicouches destinés à être utilisés dans des installations d'eau chaude et froide conformes à l'EN 806, conçus pour une durée de vie en service de cinquante ans, ainsi que dans les installations de chauffage et de refroidissement ou les systèmes de gaz, y compris les systèmes de gaz combustible.
Les raccords peuvent comprendre une combinaison de plusieurs types d’extrémité spécifiés dans la présente Norme européenne, EN 1254, ou dans d'autres normes, à condition qu'ils soient adaptés pour
le liquide / le gaz transporté.
La Norme européenne établit un système de désignation pour les raccords.
La présente Norme européenne est applicable aux raccords à sertir permettant de raccorder les tuyaux en plastique et tubes multicouches suivants :
EN ISO 15874, Systèmes de canalisations en plastique pour les installations d'eau chaude et froide — Polypropylène (PP) ;
EN ISO 15875, Système de canalisations en plastique pour les installations d’eau chaude et froide — Polyéthylène réticulé (PE-X) ;
EN ISO 15876, Systèmes de canalisations en plastique pour les installations d'eau chaude et froide — Polybutène (PB) ;
EN ISO 15877, Systèmes de canalisations en plastique pour les installations d’eau chaude et froide — Poly (chlorure de vinyle) chloré (PVC-C) ;
EN ISO 21003, Systèmes de canalisations multicouches pour installations d'eau chaude et froide à l'intérieur des bâtiments ;
EN ISO 22391, Système de canalisations en plastique pour les installations d’eau chaude et froide — Polyéthylène de meilleure résistance à la température (PE-RT) ;
ISO 17484, Systèmes de canalisations en matières plastiques — Tubes multicouches et leurs assemblages pour une pression maximale de service inférieure ou égale à 5 bar (500 kPa) destinés à l'alimentation en gaz à l'intérieur des bâtiments.
Les raccords peuvent être adaptés pour raccorder d'autres tuyaux à condition que le raccordement avec le tuyau spécifié satisfasse aux prescriptions de la présente Norme européenne et de la norme de tuyau pertinente.
Baker in bakrove zlitine - Fitingi - 8. del: Fitingi s stiskalnimi zaključki pri uporabi plastičnih in večplastnih cevi
Ta evropski standard določa materiale in preskusne zahteve za fitinge iz bakra in bakrovih zlitin. Ta del standarda EN 1254 določa stiskalne zaključke z nanosom ali premazom v razponu od 10 mm do 110 mm za spajanje plastičnih in večplastnih cevi, namenjene za uporabo tako v sistemih za vročo in hladno vodo v skladu s standardom EN 806, ki so zasnovani za življenjsko dobo do petdeset let, kot tudi v sistemih ogrevanja in hlajenja. Fitingi lahko sestavljajo kombinacijo zaključkov, določenih v tem evropskem standardu EN 1254 ali drugih standardih, če so ti primerni za prenašanje tekočin/plina. Ta evropski standard določa sistem označevanja za fitinge. Ta evropski standard se uporablja za stiskalne fitinge za spajanje ene ali več naslednjih plastičnih in večplastnih cevi: EN ISO 15874, plastični cevni sistemi za inštalacije za vročo in hladno vodo, – polipropilen (PP); EN ISO 15875, plastični cevni sistemi za napeljave za vročo in hladno vodo – zamreženi polietilen (PE-X); EN ISO 15876, plastični cevni sistemi za napeljave za vročo in hladno vodo – polibutilen (PB); EN ISO 15877, plastični cevni sistemi za napeljave za vročo in hladno vodo – kloriran poli (vinil klorid) (PVC-C); EN ISO 21003, večplastni cevni sistemi za napeljave za vročo in hladno vodo v stavbah; EN ISO 22391, plastični cevni sistemi za napeljave za vročo in hladno vodo – polietilen s povišano temperaturno odpornostjo (PE-RT); ISO 17484, plastični cevni sistemi – večplastni cevni sistemi za notranje plinske napeljave z največjim delovnim tlakom do vključno 5 barov (500 kPa). Fitingi so lahko primerni za spajanje drugih cevi, če spoj fitinga s posamezno cevjo ustreza zahtevam tega evropskega standarda in ustreznega standarda za cev.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kupfer und Kupferlegierungen - Fittings - Teil 8: Pressfittings für den Einsatz mit Kunststoff- und MehrschichtverbundrohrenCuivre et alliages de cuivre - Raccords - Partie 8 : Raccords à sertir pour tuyaux en plastique et tubes multicouchesCopper and copper alloys - Plumbing fittings - Part 8: Fittings with press ends for use with plastics and multilayer pipes77.150.30Bakreni izdelkiCopper products23.040.40Kovinski fitingiMetal fittingsICS:Ta slovenski standard je istoveten z:EN 1254-8:2012SIST EN 1254-8:2014en,fr,de01-julij-2014SIST EN 1254-8:2014SLOVENSKI
STANDARD
SIST EN 1254-8:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1254-8
October 2012 ICS 23.040.40 English Version
Copper and copper alloys - Plumbing fittings - Part 8: Fittings with press ends for use with plastics and multilayer pipes
Cuivre et alliages de cuivre - Raccords - Partie 8: Raccords à sertir pour tuyaux en plastique et tubes multicouches
Kupfer und Kupferlegierungen - Fittings - Teil 8: Pressfittings für den Einsatz mit Kunststoff- und Mehrschichtverbundrohren This European Standard was approved by CEN on 11 August 2012.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1254-8:2012: ESIST EN 1254-8:2014
EN 1254-8:2012 (E) 2 Contents Page Foreword .4Introduction .51 Scope .62 Normative references .63 Terms and definitions .74 Requirements .84.1 General .84.2 Materials .84.2.1 General .84.2.2 Reaction to fire . 104.2.3 Resistance to high temperature (for heating networks) . 104.3 Dimensions and tolerances . 114.3.1 Minimum bore area . 114.3.2 Minimum bore area through an internal support . 114.3.3 Tolerance for the alignment of the fitting ends . 134.4 Design and manufacture . 134.4.1 Press fittings . 134.4.2 Pipe abutment . 134.4.3 Surface condition. 134.4.4 Plated or coated surfaces . 135 Testing, assessment and sampling methods . 135.1 Type testing . 135.1.1 General . 135.1.2 Gas application . 145.1.3 Preparation of fittings for testing . 145.1.4 Test temperature . 145.2 Resistance to stress corrosion . 145.3 Factory production control system . 155.3.1 General . 155.3.2 Integrity of fittings bodies with as-cast microstructure or fabricated by welding or brazing . 155.3.3 Resistance to dezincification . 156 Evaluation of conformity . 166.1 General . 166.2 Type testing . 166.2.1 General . 166.2.2 Requirements and characteristics . 166.2.3 Use of historical data . 166.2.4 Further type testing . 166.3 Sampling, testing and conformity criteria . 176.3.1 Sampling . 176.3.2 Testing and conformity criteria . 176.4 Factory production control (FPC) . 176.4.1 General . 176.4.2 Personnel . 176.4.3 Equipment . 186.4.4 Raw materials and components . 186.4.5 In-process control. 186.4.6 Traceability and marking . 186.4.7 Non-conforming products . 186.4.8 Corrective action. 186.4.9 Handling, storage, packaging . 187 Classification and designation . 18SIST EN 1254-8:2014
EN 1254-8:2012 (E) 3 8 Marking . 198.1 General . 198.2 Dezincification resistant copper-zinc alloys. 199 Documentation . 199.1 Declaration of conformity . 199.2 User instructions . 19Annex A (normative)
Resistance to stress corrosion . 20A.1 Introduction . 20A.2 Test piece . 20A.3 Procedure . 20A.4 Test report . 20Annex B (normative)
Pressure test for fitting bodies with as cast microstructure or fabricated by welding or brazing . 21B.1 Introduction . 21B.2 Principle. 21B.3 Apparatus . 21B.4 Test piece . 21B.5 Procedure . 22Annex C (normative)
Determination of mean depth of dezincification . 23C.1 Introduction . 23C.2 Procedure . 23C.3 Expression of results . 23Bibliography . 24 SIST EN 1254-8:2014
EN 1254-8:2012 (E) 4 Foreword This document (EN 1254-8:2012) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys”, 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 April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 8 "Fittings" to prepare the following European Standard: EN 1254-8, Copper and copper alloys — Plumbing fittings — Part 8: Fittings with press ends for use with plastics and multilayer pipes EN 1254 comprises the following parts under the general title "Copper and copper alloys — Plumbing fittings": Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes Part 2: Fittings with compression ends for use with copper tubes Part 3: Fittings with compression ends for use with plastics pipes Part 4: Fittings with threaded end connections Part 5: Fittings with short ends for capillary brazing to copper tubes Part 6: Fittings with push-fit ends Part 7: Fittings with press ends for metallic tubes
Part 8: Fittings with press ends for use with plastics and multilayer pipes Part 7 will be the subject of future work. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
SIST EN 1254-8:2014
EN 1254-8:2012 (E) 5 Introduction Products complying with this document may be used for the transport of water for human consumption if they comply with the relevant national, regional or local regulatory provisions applicable in the place of use. This European Standard provides the basis for the assessment of a manufacturer's production process for products manufactured in accordance with this European Standard.
SIST EN 1254-8:2014
EN 1254-8:2012 (E) 6 1 Scope This European Standard specifies materials and test requirements for fittings of copper and copper alloys. This part of EN 1254 specifies press end connections with or without plating or coating in the size range 10 mm to 110 mm for the purpose of joining plastics and multilayer pipes for use in hot and cold water systems according to EN 806, which are designed for service lifetime up to fifty years, as well as heating and cooling systems or gas systems, including fuel gas systems. Fittings may comprise a combination of end types, specified in this European Standard, EN 1254, or other standards, providing they are suitable for the fluid / gas being conveyed. The European Standard establishes a designation system for the fittings.
This European Standard is applicable to press fittings for joining the following plastics and multilayer pipes: EN ISO 15874, Plastics piping systems for hot and cold water installations — Polypropylene (PP); EN ISO 15875, Plastics piping systems for hot and cold water installations — Crosslinked polyethylene (PE-X); EN ISO 15876, Plastics piping systems for hot and cold water installations — Polybutylene (PB); EN ISO 15877, Plastics piping systems for hot and cold water installations — Chlorinated poly (vinyl chloride) (PVC-C); EN ISO 21003, Multilayer piping systems for hot and cold water installations inside buildings; EN ISO 22391, Plastics piping systems for hot and cold water installations — Polyethylene of raised temperature resistance (PE-RT); ISO 17484, Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa). Fittings may be suitable for joining other pipes provided the fitting joint with the specified pipe meets the requirements of this European Standard and the relevant pipe standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 549:1994, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 681-1:1996, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage applications — Part 1: Vulcanised rubber EN 1254-4, Copper and copper alloys — Plumbing fittings — Part 4: Fittings combining other end connections with capillary or compression ends EN 1655, Copper and copper alloys — Declarations of conformity EN 1982, Copper and copper alloys — Ingots and castings EN 12164, Copper and copper alloys — Rod for free machining purposes EN 12165, Copper and copper alloys – Wrought and unwrought forging stock SIST EN 1254-8:2014
EN 1254-8:2012 (E) 7 EN 12449, Copper and copper alloys — Seamless, round tubes for general purposes EN ISO 6509:1995, Corrosion of metals and alloys — Determination of dezincification resistance of brass (ISO 6509:1981) EN ISO 15874, Plastics piping systems for hot and cold water installations — Polypropylene (PP) EN ISO 15875, Plastics piping systems for hot and cold water — Crosslinked polyethylene (PE-X) EN ISO 15876, Plastics piping systems for hot and cold water installations — Polybutylene (PB) EN ISO 15877, Plastics piping systems for hot and cold water installations — Chlorinated poly (vinyl chloride) (PVC-C) EN ISO 21003, Multilayer piping systems for hot and cold water installations inside buildings EN ISO 22391, Plastics piping systems for hot and cold water installations — Polyethylene of raised temperature resistance (PE-RT) ISO 815-1, Rubber, vulcanized or thermoplastic — Determination of compression set — Part 1: At ambient or elevated temperatures
ISO 6957:1988, Copper alloys — Ammonia test for stress corrosion resistance ISO 9924-1, Rubber and rubber products — Determination of the composition of vulcanizates and uncured compounds by thermogravimetry — Part 1: Butadiene, ethylene-propylene copolymer and terpolymer, isobutene-isoprene, isoprene and styrene-butadiene rubbers ISO 17484-1:2006, Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) — Part 1: Specifications for systems 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 plumbing fitting device used in a tube system for the purpose of connecting the tubes either to each other or to a component part of the system 3.2 press end end which may incorporate a sealing element and in which the joint is effected by radial compression of the ends of the fitting and the tube with a pressing tool Note 1 to entry: Some designs may incorporate an additional device to aid retention. Note 2 to entry: Compression of the ends of the fitting and the tube can be achieved directly or indirectly by radial compression. 3.3 adaptor fitting fitting combining more than one type of end Note 1 to entry: For details of other ends, see the relevant parts of this European Standard or other standards. SIST EN 1254-8:2014
EN 1254-8:2012 (E) 8 3.4 nominal diameter nominal diameter of the fitting end expressed as the nominal outside diameter of the connecting tube 3.5 supporting sleeve insert stiffener device permanently inserted in the tube end to provide internal support for low strength tube or pipe materials 3.6 durably marked marked in such a way that the marking will remain readable at least up to the time of commissioning of the installation Note 1 to entry: e.g. by ink marking. 3.7 permanently marked marked in such a way that the marking will remain readable up to the end of the life of the installation Note 1 to entry: e.g. by stamping, etching or engraving. 3.8 type test test or series of tests aimed at approving a product to determine that the element designed is able to fulfil the requirements of the product specification 4 Requirements 4.1 General Fittings, including reducers, shall conform to the requirements of 4.2 to 4.4. Details of applications and classes of service conditions are specified in the relevant plastics piping systems standards. 4.2 Materials 4.2.1 General Fittings bodies shall be made from copper or copper alloys selected from materials specified in European Standards for copper and copper alloy products, provided that the fittings manufactured from them meet the functional requirements of this European Standard. SIST EN 1254-8:2014
EN 1254-8:2012 (E) 9 NOTE Some of the standardised coppers and copper alloys commonly used for the manufacture of fittings are shown in Table 1. Table 1 — Examples of commonly used materials Material designation Standard Symbol Number
Cu-DHP CW024A EN 12449 CuSn5Zn5Pb5-C CC491K EN 1982 CuZn36Pb2As CW602N EN 12164 CuZn39Pb3 CW614N EN 12164 CuZn40Pb2 CW617N EN 12165 CuZn33Pb2-C CC750S EN 1982 CuZn15As-C CC760S EN 1982 NOTE These examples do not constitute an exhaustive list.
Other components can be made from metallic or non-metallic materials, provided that they do not prevent the fitting meeting the functional requirements of this European Standard and do not cause degradation of the connected pipe. Copper is not acceptable for use with polypropylene pipes – alloys are acceptable. In the case of multi-layer pipes, the fitting design shall avoid contact between dissimilar metallic components that might give rise to corrosion. Non-metallic sealing elements for fitting ends for water applications shall conform to the requirements for elastomeric materials in EN 681-1 and Tables 2 and 3 of this European Standard. Table 2 — Requirements and tests for non-metallic sealing elements Test Procedures Tear strength in accordance with EN 681-1:1996, Table 3. This requirement applies to all elastomeric sealing materials. Minimum tear strength: ≥ 20 N Thermogravimetric analysis for identity testing of elastomeric materials. The TGA is carried out in accordance with ISO 9924-1. Frequency of test - the TGA shall be carried out at the type testing stage to produce the master graph. Further analysis will be made to compare the production to the master graph at a frequency of once per year thereafter.
In order to demonstrate durability for long-term applications in water, elastomeric sealing elements shall be tested in accordance with the parameters shown in Table 3. SIST EN 1254-8:2014
EN 1254-8:2012 (E) 10
Table 3 — Durability test for elastomeric sealing elements for fittings for water applications Test procedures Compression set test in water, in accordance with EN 681-1:1996, Annex B, and ISO 815-1. Test duration: 3 000 h Test temperature: 110 °C Test medium: Distilled water Compression set after 3 000 h: ≤ 30 % Compression set increase between 1 000 h and 3 000 h ≤ 5 % / 1 000 h Change in volume/Swelling (varying to EN 681-1 for IIR only) Test duration: 7 d Test temperature: 95 °C Test medium: Distilled water Change in volume ≤ 15 %
Non-metallic sealing elements for fitting ends for use with gas shall conform to the requirements for elastomeric materials in EN 549 and Table 4 of this European Standard. Table 4 — Durability test for elastomeric sealing elements for fittings for gas applications Test procedures Ozone resistance testing and requirements in accordance with EN 549:1994, 7.8 and 6.2, Table 3. Requirement — no cracks Material identity. Infrared spectra. The elastomer and the seal shall meet EN 549:1994, B.2; requirements for infrared spectra. Frequency of test – the test shall be carried out at the initial type testing stage to produce the master graph. Further analysis will be made to compare the production to the master graph at a frequency of once per year thereafter.
4.2.2 Reaction to fire Copper and copper alloys are products/materials that do not require to be tested for reaction to fire (i.e. products/materials of class A.1 according to Commission Decision 96/603/EC, as amended 2000/605/EC). 4.2.3 Resistance to high temperature (for heating networks) The mechanical properties of products which consist of copper or copper alloys at temperatures encountered in heating networks are not reduced significantly; for example, it is not necessary to include the maximum admissible stress in pressure calculations from ambient up to 120 ûC. SIST EN 1254-8:2014
EN 1254-8:2012 (E) 11 4.3 Dimensions and tolerances 4.3.1 Minimum bore area The minimum cross-sectional area of the bore through each fitting shall be in accordance with Table 5, except that for unequal-ended or adaptor fittings with ends specified in EN 1254, or other standards, the smallest diameter shall apply provided that this diameter does not restrict other outlets. 4.3.2 Minimum bore area through an internal support When an internal support is provided, either as an integral part of the fitting or loose, the minimum cross-sectional area of the bore through the support shall be in accordance with Table 5. SIST EN 1254-8:2014
EN 1254-8:2012 (E) 12 Table 5 — Minimum cross-sectional area of bores Nominal diameter D Relationship of bore area to
the theoretical minimum area of the bore of the pipe mm for internal support with sealing element % for fitting and internal support without sealing element % 10 18 35 12 14 30 45
14,7 50 15 16 17 18 20 21 35 55 22 25
27,4 45 60 28 32 34 55 65 40
40,5 60 70 50
53,6 63 75 90 110
EXAMPLE For 15 mm nominal diameter compression end for copper tube with 0,8 mm wall thickness, area of bore = 141,0 mm2. Permissible area of bore through an internal support with sealing element (from table) = 30 % × 141,0 mm2 = 42,3 mm2. Therefore internal diameter of the internal support = 7,3 mm. Permissible area of bore through an internal support without sealing element (from table)= 50 % × 141,0 mm2 = 70,5 mm2. Therefore internal diameter of the internal support = 9,5 mm. SIST EN 1254-8:2014
EN 1254-8:2012 (E) 13 4.3.3 Tolerance for the alignment of the fitting ends The alignment of the ends of the fitting shall be within 2° of the specified axis. 4.4 Design and manufacture 4.4.1 Press fittings Fittings for gas applications shall include an internal support. Internal supports or fittings incorporating fixed internal supports shall be selected for suitability for use with the pipe material and its dimensions. Internal supports are specific to the type of pipe and to each manufacturer of fittings. They should not be interchanged. 4.4.2 Pipe abutment Fittings shall be manufactured, usually with an abutment to limit pipe insertion. Fittings may be produced for special purposes, particularly useful for repairs, where the fitting ends do not incorporate abutments, allowing the fitting to slide along the pipe. 4.4.3 Surface condition Fittings shall be clean and free from sharp edges. 4.4.4 Plated or coated surfaces Requirements for plated or coated surfaces shall be the subject of agreement between the purchaser and the manufacturer and shall not impair the performance of the joint. 5 Testing, assessment and sampling methods 5.1 Type testing 5.1.1 General Type testing shall be performed once to prove the product design by conformity with the type test requirements in this European Standard. Further type testing shall be performed when a change has been made to the design, material or process, which may affect the performance characteri
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