EN 1254-6:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kupfer und Kupferlegierungen - Fittings - Teil 6: EinsteckfittingsCuivre et alliages de cuivre - Raccords - Partie 6: Raccords instantanésCopper and copper alloys - Plumbing fittings - Part 6: Fittings with push-fit ends77.150.30Bakreni izdelkiCopper products23.040.40Kovinski fitingiMetal fittingsICS:Ta slovenski standard je istoveten z:EN 1254-6:2012SIST EN 1254-6:2014en,fr,de01-julij-2014SIST EN 1254-6:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1254-6
October 2012 ICS 23.040.40 English Version
Copper and copper alloys - Plumbing fittings - Part 6: Fittings with push-fit ends
Cuivre et alliages de cuivre - Raccords - Partie 6: Raccords instantanés
Kupfer und Kupferlegierungen - Fittings - Teil 6: Einsteckfittings 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 1254-6:2012: ESIST EN 1254-6:2014

Method for testing leaktightness of joints
under internal hydrostatic pressure. 26A.1 Introduction . 26A.2 Principle. 26A.3 Apparatus . 26A.4 Test piece . 26A.5 Procedure . 27Annex B (normative)
Method for testing resistance to pull-out of joints with metallic tube . 28B.1 Introduction . 28B.2 Principle. 28B.3 Apparatus . 28B.4 Test assembly . 28B.5 Procedure . 28Annex C (normative)
Test method for resistance of joints with metallic tube to temperature cycling . 30C.1 Introduction . 30C.2 Principle. 30C.3 Apparatus . 30C.4 Test assembly . 30C.5 Procedure . 31Annex D (normative)
Method for testing the resistance of joints with metallic tube to pressure cycling . 32D.1 Introduction . 32D.2 Principle. 32D.3 Apparatus . 32D.4 Test pieces . 33D.5 Procedure . 33Annex E (normative)
Test method for leaktightness of joints with metallic tube under vacuum . 34E.1 Introduction . 34E.2 Principle. 34E.3 Apparatus . 34E.4 Test piece . 35E.5 Procedure . 35Annex F (normative)
Test method for the resistance of joints with metallic tube to vibration . 36F.1 Introduction . 36F.2 Principle. 36F.3 Apparatus . 36F.4 Test assembly . 36F.5 Procedure . 37SIST EN 1254-6:2014

Test method for leaktightness of joints with metallic tube under internal hydrostatic pressure while subjected to bending . 38G.1 Introduction . 38G.2 Principle . 38G.3 Apparatus . 38G.4 Test piece . 38G.5 Procedure . 39Annex H (normative)
Test method for disconnection and re-use . 40H.1 Introduction . 40H.2 Principle . 40H.3 Apparatus . 40H.4 Test assembly . 40H.5 Procedure . 40Annex I (normative)
Fitting rotation test . 41I.1 Introduction . 41I.2 Principle . 41I.3 Apparatus . 41I.4 Test assembly . 41I.5 Procedure . 42Annex J (normative)
Determination of resistance to stress corrosion . 43J.1 Introduction . 43J.2 Test piece . 43J.3 Procedure . 43J.4 Test report . 43Annex K (normative)
Pressure test for fittings bodies with as-cast microstructure or fabricated by welding or brazing . 44K.1 Introduction . 44K.2 Principle . 44K.3 Apparatus . 44K.4 Test piece . 44K.5 Procedure . 45Annex L (normative)
Determination of mean depth of dezincification . 46L.1 Introduction . 46L.2 Procedure . 46L.3 Expression of results . 46Bibliography . 48 SIST EN 1254-6:2014

 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.
6 Intermediate pressure ratings are determined by linear interpolation. Certain designs of push-fit fittings are suitable for use at temperature/pressure ratings outside those given in this table. For such applications, the advice of the manufacturer should be sought. To allow for system malfunctions, it is essential that fittings be capable of temporary excursions up to a temperature of 110 °C at a pressure of 6 bar. SIST EN 1254-6:2014

1) Currently under revision. SIST EN 1254-6:2014

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 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 push-fit end end which incorporates a sealing element and a gripping device. The joint is made by pushing the tube into the fitting and a seal is achieved without the use of heat or tools Note 1 to entry: In some designs, this type of joint can be disconnected and re-connected or disconnected and the fitting
re-used elsewhere. 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. 3.4 nominal diameter nominal diameter of the fitting end expressed as the nominal outside diameter of the connecting tube SIST EN 1254-6:2014

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 standard and do not cause degradation of the connected tube or pipes. Sealing elements shall conform to the requirements for elastomeric materials in EN 681-1 and Table 3 of this European Standard. Table 3 — Requirements and tests for non-metallic sealing elements Test procedures Tear strength for butyl rubbers in accordance with EN 681-1:1996, Table 3. Minimum tear strength: ≥ 20 N. Thermogravimetric analysis (TGA) 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 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.
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 4. Table 4 — 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 %
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 °C. SIST EN 1254-6:2014

Dimensions in millimetres Nominal diameterD Minimum bore diameter
4,0
6,0
7,0
9,0
10,0
14,7
11,0
11,0
12,0
13,0
14,0
16,0
18,0
18,0
21,0
27,4
23,0
23,0
26,0
29,0
29,0
35,0
40,5
36,0
36,0
40,0
53,6
47,0
47,0 4.3.2 Minimum bore area through fittings with an integral or separate 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 6. SIST EN 1254-6:2014

mm for internal support with sealing element % for fitting and internal support without sealing element %
6 18 35
8 10 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 54
EXAMPLE For 16 mm nominal diameter push-fit end for plastics pipe with 2,0 mm wall thickness, area of bore = 113,1 mm2. Permissible area of bore through an internal support with sealing element (from table) = 30 % × 113,1 mm2 = 33,9 mm2. Therefore the minimum internal diameter of the internal support = 6,57 mm. Permissible area of bore through an internal support without sealing element (from table) = 50 % × 113,1 mm2 = 56,6 mm2. Therefore minimum internal diameter of the internal support = 8,49 mm. SIST EN 1254-6:2014

No Yes Disconnection and re use (if applicable) Yes Yes Fitting rotation Yes Yes Stress corrosion Yes Yes
5.1.2 Preparation of fittings for testing The fittings to be tested in accordance with 5.1.4 to 5.1.14 shall be assembled with the relevant tube or pipe, in accordance with the manufacturer’s instructions. 5.1.3 Test temperature Tests shall be conducted at a temperature of (23 ± 5) °C unless otherwise stated. 5.1.4 Leaktightness under internal hydrostatic pressure When tested in accordance with the parameters shown in Table 8 the fittings shall show no signs of leakage. Table 8 — Hydrostatic pressure test parameters Tube or pipe material Minimum free length of the tube or pipe in the testassembly Test pressure Test duration
Number of test pieces per size Test method
mm
min
Copper EN 1057 100 (24 ± 1) bar 15 1 Annex A PE-X
EN ISO 15875-2 1,5 PN of pipe 3 PB
EN ISO 15876-2 PP
EN ISO 15874-2 Multilayer
EN ISO 21003-2 SIST EN 1254-6:2014

EN ISO 15875-2 see EN ISO 15875-5 3 EN 712 followed by Annex A PB
EN ISO 15876-2 see EN SO 15876-5 PP
EN ISO 15874-2 see EN ISO 15874-5 Multilayer
EN ISO 21003-2 see EN ISO 21003-5
5.1.6 Temperature cycling When tested in accordance with the parameters shown in Table 10 the fittings under test shall show no signs of leakage.
°C °C bar m/s min
Copper EN 1057 93 ± 2 20 ± 5 10 ± 1 ≥ 0,5 (15 ± 1) hot
(15 ± 1) cold 5 000 Annex C PE-X EN ISO 15875-2 see EN ISO 15875-5 EN 12293 PB EN ISO 15876-2 see EN ISO 15876-5 PP EN ISO 15874-2 see EN ISO 15874-5 Multilayer
EN ISO 21003-2 see EN ISO 21003-5 5.1.7 Pressure cycling test When tested in accordance with the parameters shown in Table 11 the fittings under test shall show no signs of leakage. Table 11 — Pressure cycling test parameters Tube or pipe material Low pressure limitHigh pressure limitNumber of cycles Frequency of cycles Number of test pieces per size Test method Copper EN 1057 (1 ± 0,5) bar (25 ± 0,5) bar 10 000 (30 ± 5) per min 3 Annex D PE-X EN ISO 15875-2 see EN ISO 15875-5 EN 12295 PB EN ISO 15876-2 see EN ISO 15876-5 PP EN ISO 15874-2 see EN ISO 15874-5 Multilayer
EN ISO 21003-2 see EN ISO 21003-5 SIST EN 1254-6:2014

EN ISO 21003-2 see EN ISO 21003-5 5.1.9 Vibration test (metallic tube only) When tested in accordance with the parameters shown in Table 13 the fitting shall show no signs of leakage. Table 13 — Vibration test parameters Tube material Test pressure Deflection Number of cycles Frequencyof
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