1、November 2012 Translation by DIN-Sprachendienst.English price group 18No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 23.040.40!$K“1922540www.din.deDDIN EN 12842Ductile iron fittings for PVC-U or PE piping systems Requirements and test methods;English version EN 12842:2012,English translation of DIN EN 12842:2012-11Duktile Gussformstcke fr PVC-U- oder PE-Rohrleitungssysteme Anforderungen und Prfverfahren;Englisc
3、he Fassung EN 12842:2012,Englische bersetzung von DIN EN 12842:2012-11Raccords en fonte ductile pour systmes de canalisations en PVC-U ou en PE Prescriptions et mthodes dessai;Version anglaise EN 12842:2012,Traduction anglaise de DIN EN 12842:2012-11SupersedesDIN EN 12842:2000-08www.beuth.deDocument
4、 comprises 51 pagesIn case of doubt, the German-language original shall be considered authoritative.10.12 DIN EN 12842:2012-11 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 203 “Cast iron pipes, fittings and their joints” (Se
5、cretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Rohrleitungen und Dampfkesselanlagen (Piping and Boiler Plant Standards Committee), Technical Committee NA 082-00-05 AA Gusseiserne Druckrohre und Formstcke. Amendments This standard differs fr
6、om DIN EN 12842:2000-08 as follows: a) mild steel couplings and flange adaptors have been included with requirements for minimum wall thickness and material; b) normative references have been updated; c) in Clause 3 “Terms and definitions”, “flange adaptor” (3.24) and “coupling” (3.25) have been def
7、ined; d) fittings of nominal sizes 40 and 50 have been deleted; e) Subclause 4.2.5 “Jointing gap for couplings and flange adaptors” has been included; f) in Table 5, “Test requirements”, the test pressure for the positive internal hydrostatic pressure has been changed to (1,5 PFA) bar; g) Subclause
8、5.3 “Long term hydrostatic strength test” has been included; h) in Subclause 6.1.2 “Preparation of test bar”, the specifications relating to the tensile strength measurement of the test bar have been modified; i) Subclauses 7.4, 7.5 and 7.6 relating to tests for PE PVC-U pipes have been included; j)
9、 the former Annex A (informative) “Quality assurance” has been deleted and a new Clause 9 “Evaluation of conformity” dealing with the initial type testing and factory production control has been added instead; k) the standard has been editorially revised. Previous editions DIN EN 12842: 2000-08 EURO
10、PEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12842 August 2012 ICS 23.040.40 Supersedes EN 12842:2000 English Version Ductile iron fittings for PVC-U or PE piping systems Requirements and test methods Raccords en fonte ductile pour systmes de canalisations en PVC-U ou en PE Prescriptions et mtho
11、des dessai Duktile Gussformstcke fr PVC-U oder PE-Rohrleitungssyteme Anforderungen und Prfverfahren This European Standard was approved by CEN on 23 June 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard t
12、he 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, Fre
13、nch, 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
14、, 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
15、 and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 128
16、42:2012: E EN 12842:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 53 Terms and definitions .54 Technical requirements 84.1 General 84.2 Dimensional requirements . 104.3 Material characteristics 124.4 Coatings . 134.5 Marking 144.6 Leak tightness . 145 Performance requirements fo
17、r joints 145.1 General . 145.2 Leak tightness of flexible joints 155.3 Long term hydrostatic strength test . 175.4 Flanged joints 196 Test methods . 196.1 Tensile testing for ductile iron 196.2 Brinell hardness for ductile iron . 206.3 Works leak tightness test 217 Performance tests. 217.1 Leak tigh
18、tness of joints to internal hydrostatic pressure 217.2 Leak tightness of joints to negative internal pressure . 237.3 Leak tightness of joints to dynamic internal pressure . 247.4 Long term hydrostatic strength test for joints of fittings for PE pipes . 247.5 Pull out test at 25 C for restrained joi
19、nts for PE pipes 257.6 Long term hydrostatic strength test for joints of fittings for PVC-U pipe 258 Tables of dimensions . 268.1 Dimensions of sockets for push-in flexible joints . 268.2 Dimensions of sockets for mechanical flexible joints 288.3 Dimensions of fittings 299 Evaluation of conformity 4
20、49.1 General . 449.2 Initial performance testing . 459.3 Factory production control (FPC) . 46Bibliography . 49DIN EN 12842:2012-11EN 12842:2012 (E) 3 Foreword This document (EN 12842:2012) has been prepared by Technical Committee CEN/TC 203 “Cast iron pipes, fittings and their joints”, the secretar
21、iat of which is held by AFNOR. 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 February 2013, and conflicting national standards shall be withdrawn at the latest by February 2013. Attention is dra
22、wn 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. This document supersedes EN 12842:2000. The significant changes made since the previous version are as
23、 follows: a) Wording (relating to accessories, fittings, coupling and flange adaptor) modified in accordance with EN 545; b) Improvement of shear load test for flange adapter and one socket fitting; c) Addition of aging test for PE pipe fittings and accessories. This European Standard was prepared i
24、n co-operation with CEN/TC 155 “Plastics piping systems“. This standard is in conformity with the general requirements already established by CEN/TC 164 in the field of water supply. In respect of potential adverse effects on the quality of water intended for human consumption caused by the product
25、covered by this standard: this standard provides no information as to whether the product may be used without restriction in any of the member states of the EU or EFTA; it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the
26、use and/or the characteristics of these products remain in force. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Es
27、tonia, 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. DIN EN 12842:2012-11E
28、N 12842:2012 (E) 4 1 Scope This European Standard specifies the requirements and associated test methods applicable to ductile iron fittings, ductile iron and mild steel couplings and flange adaptors and their joints to be used with poly(vinyl chloride) (PVC-U) pipes or polyethylene (PE) pipes. It i
29、s in conformity with EN 1452-1 to -5, ENV 1452-6 and -7 and EN 12201-1 to -5 respectively, for the construction of pipelines: to convey water (e.g. water intended for human consumption); with or without pressure; to be installed below or above ground, inside or outside buildings. This European Stand
30、ard is not intended to cover sewerage applications, where additional requirements may be necessary. This European Standard is applicable to fittings which are: manufactured with socketed, flanged or spigot ends; supplied externally and internally coated; suitable for PE and PVC-U pipes with fluid te
31、mperatures between 0C and 25C, excluding frost, and for pressures up to 16 bar (PFA). For higher temperatures (up to 45C for PVC-U or 40C for PE) the PFA is derated as given in EN 1452 and EN 12201; not intended for use in areas subjected to reaction to fire regulations. NOTE 1 This does not preclud
32、e special arrangements for the products to be used at higher temperatures. Temperature limitations and pressure limitations are those coming from the PVC-U or PE pipes. This European Standard covers ductile iron fittings, couplings and flange adaptors cast by any type of foundry process or manufactu
33、red by fabrication of cast components, as well as corresponding joints, in a size range extending from DN 60 to DN 700, to be used with pipes of external diameter from 63 mm to 710 mm. As long as no equivalent European Standard exists for mild steel accessories, this European Standard also covers co
34、uplings and flange adaptors for use with PVC-U and PE pipes which are fabricated partly or entirely from mild steel as well as corresponding joints, in a size range extending from DN 60 to DN 700, to be used with pipes of external diameter from 63 mm to 710 mm. This European Standard specifies requi
35、rements for materials, dimensions and tolerances, mechanical properties and standard coatings. It also gives minimum performance requirements for all components, including restrained and non-restrained flexible joints. Joint design and gasket shapes are outside the scope of this standard. This Europ
36、ean Standard does not cover fittings, couplings and flange adaptors intended to be used with different pipe materials other than PVC-U and PE. NOTE 2 Fittings, couplings and flange adaptors complying with the requirements of this European Standard for PVC-U also usually meet the requirements for PVC
37、-O and PVC-A pipes. Where this is not the case, the manufacturer is expected to declare this in the relevant literature. NOTE 3 In this European Standard, all pressures are relative pressures, expressed in bars (100 kPa = 1 bar). DIN EN 12842:2012-11EN 12842:2012 (E) 5 2 Normative references The fol
38、lowing 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 681-1, Elas
39、tomeric seals Material requirements for pipe joint seals used in water and drainage applications Part 1: Vulcanised rubber EN 805:2000, Water supply Requirements for systems and components outside buildings EN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittings and accessor
40、ies, PN designated Part 2: Cast iron flanges EN 10025-1:2004, Hot rolled products of structural steels General technical delivery conditions EN 10310, Steel tubes and fittings for onshore and offshore pipelines Internal and external polyamide powder based coatings EN 14901, Ductile iron pipes, fitti
41、ngs and accessories Epoxy coating (heavy duty) of ductile iron fittings and accessories Requirements and test methods EN 15189, Ductile iron pipes, fittings and accessories External polyurethane coating for pipes Requirements and test methods EN 15655, Ductile iron pipes, fittings and accessories In
42、ternal polyurethane lining for pipes and fittings Requirements and test methods EN ISO 1167-1:2006, 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 4016, Hexagon head bolts
43、 Product grade C (ISO 4016) EN ISO 4034, Hexagon nuts Product grade C (ISO 4034) EN ISO 6506-1, Metallic materials Brinell hardness test Part1: Test method (ISO 6506-1) EN ISO 7091, Plain washers Normal series Product grade C (ISO 7091) EN ISO 9001:2008, Quality management systems Requirements (ISO
44、9001:2008) EN ISO 13846:2000, Plastic 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) 3 Terms and definitions For the purposes of this document, th
45、e following terms and definitions apply. 3.1 ductile iron cast iron used for fittings in which graphite is present substantially in spherodal form 3.2 fitting casting other than a pipe which allows pipeline deviation, change of direction or bore DIN EN 12842:2012-11EN 12842:2012 (E) 6 SOURCE: EN 545
46、 3.3 flange end of a fitting or flange adaptor extending perpendicular to its axis, with bolt holes equally spaced on a circle Note 1 to entry: A flange can be fixed (e.g. integrally cast or welded) or adjustable; an adjustable flange comprises a ring, in one or several parts assembled together, whi
47、ch bears on an end joint hub and can be freely rotated around the axis before jointing. 3.4 spigot male end of a pipe or fitting 3.5 socket female end of a pipe or fitting to make the connection with the spigot of the next component 3.6 gasket sealing component of a joint 3.7 joint connection betwee
48、n the ends of two components in which a gasket is used to effect a seal 3.8 flexible joint joint which permits significant angular deflection both during and after installation and which can accept a slight offset of the centreline 3.9 push-in flexible joint flexible joint assembled by pushing the spigot through the gasket
