1、BRITISH STANDARDBS EN 14525:2004Ductile iron wide tolerance couplings and flange adaptors for use with pipes of different materials: Ductile iron, Grey iron, Steel, PVC-U, PE, Fibre-cementThe European Standard EN 14525:2004 has the status of a British StandardICS 23.040.10; 23.040.60g49g50g3g38g50g5
2、1g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14525:2004This British Standard was published under the authority of the Standards Policy and Strategy Committ
3、ee on 19 August 2005 BSI 19 August 2005ISBN 0 580 46203 XNational forewordThis British Standard is the official English language version of EN 14525:2004.The UK participation in its preparation was entrusted to Technical Committee PSE/10, Iron pipes and fittings, which has the responsibility to:A li
4、st of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standard
5、s Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does
6、 not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European develo
7、pments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 30, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued
8、 since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14525November 2004ICS 23.040.10; 23.040.60English versionDuctile iron wide tolerance couplings and flange adaptors foruse with pipes of different materials: ductile iron, Grey iron,Steel, PVC-U PE, Fibre-cement
9、Adaptateurs de brides et manchons larges tolrances enfonte ductile destins tre utiliss avec des tuyaux faitsde diffrents matriaux : fonte ductile, fonte grise, acier,PVC-U, PE, fibre-cimentGrobereichskupplungen und -flanschadapter aus duktilemGusseisen zur Verbindung von Rohren ausunterschiedlichen
10、Werkstoffen: Duktiles Gusseisen,Gusseisen mit Lamellengraphit, Stahl, PVC-U, PE,FaserzementThis European Standard was approved by CEN on 23 September 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the sta
11、tus of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A ve
12、rsion in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estoni
13、a, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE
14、FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14525:2004: EEN 14525:2004 (E) 2Contents PageForeword4Introduction .51 Scope 62 Normative references 63 Terms and d
15、efinitions .74 Technical requirements 104.1 General104.1.1 Diameter range.104.1.2 Surface condition and repairs 104.1.3 Types of joints and interconnection114.2 Dimensional requirements124.2.1 Wall thickness124.2.2 Joint gap and depth of engagement124.3 Mechanical properties of ductile iron144.3.1 T
16、ensile properties144.3.2 Hardness.144.4 Coatings144.4.1 General144.4.2 Coating of ductile iron components 144.4.3 Coating of bolts and nuts .144.5 Product information.154.5.1 Marking requirements .154.5.2 Additional information 154.6 Leak tightness154.6.1 Couplings and flange adaptors154.6.2 Joints
17、155 Performance requirements for joints.165.1 General165.2 Pressure rating.165.3 Flexible joints.165.3.1 General165.3.2 Angular deflection .165.3.3 Test conditions 175.3.4 Test parameters .175.4 Restrained flexible joints 175.5 Flanged joints.196 Test methods196.1 Tensile testing196.1.1 Samples 196.
18、1.2 Preparation of test bar 196.1.3 Apparatus and test method 206.1.4 Test results.206.2 Brinell hardness.206.3 Works leak tightness test .206.3.1 General206.3.2 Air test.206.3.3 Hydrostatic pressure test .207 Performance tests21EN 14525:2004 (E) 37.1 Leak tightness of joints to positive internal pr
19、essure.217.1.1 Coupling .217.1.2 Flange adaptor.227.2 Leak tightness of joints to negative internal pressure227.3 Leak tightness of joints to dynamic internal pressure23Annex A (informative) Outside diameters of existing pipes24Annex B (informative) Quality assurance27Bibliography28EN 14525:2004 (E)
20、 4Foreword This document (EN 14525:2004) has been prepared by Technical Committee CEN/TC 203 “Cast iron pipes, fittings and their joints”, the secretariat 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
21、 by endorsement, at the latest by May 2005, and conflicting national standards shall be withdrawn at the latest by May 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belg
22、ium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14525:2004 (E) 5Introduction This stan
23、dard 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 covered by this standard : a) this standard provides no informatio
24、n as to whether the product may be used without restriction in any of the member states of the EU or EFTA ; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in f
25、orce. EN 14525:2004 (E) 61 Scope This document specifies the requirements and associated test methods applicable to wide tolerance ductile iron couplings and wide tolerance flange adaptors intended for use with pipe components made from a number of pipe materials (ductile iron, grey iron, PE, PVC-U,
26、 steel, fibre-cement), for providing a leak tight seal over a wide range of pipe external diameters : to convey water (e.g. potable water) ; with or without pressure ; to be installed below or above ground, inside or outside buildings. This document is not intended to cover sewerage or gas applicati
27、ons, where other requirements may be necessary. This document specifies requirements for materials, dimensions and tolerances, mechanical properties and standard coatings of ductile iron products. This standard covers ductile iron products cast by any type of foundry process or manufactured by fabri
28、cation of cast components, as well as corresponding joints, in a size range extending from DN 40 to DN 600, for an allowable operating pressure (PFA) up to 16 bar, for fluid temperatures between 0 C and 25 C excluding frost. For higher temperatures, up to 50 C, additional type testing should be carr
29、ied out. It also gives performance requirements and associated test methods for restrained and non-restrained flexible joints. Joint design and gasket shapes are outside the scope of this standard. NOTE 1 PFA may be limited depending on pipe materials effectively connected. NOTE 2 In this document,
30、all pressures are relative gauge pressures, expressed in bars (100 kPa = 1 bar). NOTE 3 EN 545 gives the specifications for the ductile iron fittings to be used with ductile iron pipes. NOTE 4 EN 12842 gives the specifications for the ductile iron fittings to be used with PVC-U and PE pipes. 2 Norma
31、tive 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 Mater
32、ial requirements for pipe joint seals used in water and drainage applications Part 1 : vulcanized rubber. EN 805, Water supply Requirements for systems and components outside buildings.EN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Par
33、t 2 : Cast iron flanges.EN 10002-1, Metallic materials Tensile testing Part 1 : Method of test at ambient temperature.EN ISO 4016, Hexagon head bolts Product grade C (ISO 4016:1999).EN ISO 4034, Hexagon nuts Product grade C (ISO 4034:1999).EN ISO 6506-1, Metallic materials Brinell hardness test Part
34、 1 : Test method (ISO 6506-1:1999).EN ISO 7091, Plain washers Normal series Product grade C (ISO 7091:2000). EN 14525:2004 (E) 73 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1ductile ironcast iron used for pipes, fittings and accessories in w
35、hich graphite is present substantially in spheroidal form. 3.2fittingcasting other than a pipe which allows pipeline deviation, change of direction or bore.In addition flanged-socket pieces, flanged spigot pieces and collars are also classified as fittings. 3.3flange end of a pipe or fitting extendi
36、ng perpendicular to its axis, with bolt holes equally spaced on a circle. NOTE A flange may be fixed (e.g. integrally cast or welded-on) or adjustable ; an adjustable flange comprises a ring, in one or several parts assembled together, which bears on an end joint hub and can be freely rotated around
37、 the axis before jointing. See EN 545. 3.4spigot male end of a pipe or fitting 3.5socket female end of a pipe or fitting to make the connection with the spigot of the next component 3.6gasket sealing component of a joint 3.7jointconnection between the ends of two pipes and/or fittings in which a gas
38、ket is used to effect a seal 3.8flexible joint joint which permits significant angular deflection both during and after installation and which can accept a slight offset of the centreline 3.9push-in flexible joint flexible joint assembled by pushing the spigot through the gasket in the socket of the
39、 mating component 3.10mechanical flexible joint flexible joint in which sealing is obtained by applying pressure to the gasket by mechanical means, e.g. a gland 3.11restrained flexible joint flexible joint in which a means is provided to prevent separation of the assembled joint 3.12flanged joint jo
40、int between two flanged ends EN 14525:2004 (E) 83.13joint angular deflection angle between the axis of two connected pipeline components which a flexible joint can accommodate 3.14joint gap axial distance between any point of the spigot ends of the pipes to be connected, when aligned (coupling), or,
41、 axial distance between any point of the spigot end of the pipe and the flange face, when aligned (flange adaptor) (See also 4.2.2) 3.15depth of engagement distance between any point of the spigot end and the face of the socket of the coupling or the flange adaptor (See also 4.2.2) 3.16outside diame
42、ter (OD) outside diameter of the pipe(s) to be connected 3.17nominal size (DN) alphanumerical designation of size for components of a pipework system, which is used for reference purposes. It comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physica
43、l size, in millimetres, of the bore or outside diameter of the end connections. see EN ISO 6708 3.18nominal pressure (PN) alphanumerical designation used for reference purposes related to a combination of mechanical and dimensional characteristics of a component of a pipework system. It comprises th
44、e letters PN followed by a dimensionless number. see EN 1333 NOTE All equipment of the same nominal size DN designated by the same PN number have compatible mating dimensions. 3.19leak tightness test pressure pressure applied to a component during manufacture in order to ensure its leak tightness 3.
45、20allowable operating pressure (PFA) maximum hydrostatic pressure that a component is capable of withstanding continuously in service see EN 805 NOTE In EN 1452 and EN 12201, the term nominal pressure (PN) at 20 C is used in place of PFA. 3.21allowable maximum operating pressure (PMA) maximum pressu
46、re occurring from time to time, including surge, that a component is capable of withstanding in service see EN 805 EN 14525:2004 (E) 93.22allowable test pressure (PEA) maximum hydrostatic pressure that a newly installed component is capable of withstanding for a relatively short duration, in order t
47、o insure the integrity and tightness of the pipeline see EN 805 NOTE This test pressure is different from the system test pressure (STP), which is related to the design pressure of the pipeline and is intended to ensure its integrity and leak tightness. 3.23performance test proof of design test whic
48、h is done once and is repeated only after change of design 3.24wide tolerance flange adaptor fitting intended for use with pipes of various materials which : is used in a pipeline to make the connection with a spigot of a pipe or a fitting and the flange of another component of the pipeline (e.g. pi
49、pe, fitting, valve, etc.) ; and allows for radial and axial displacements NOTE Some flange adaptors are designed such that they can be slid over the pipes in order to facilitate easy assembly. 3.25wide tolerance coupling fitting intended for use with pipes of various materials which : is used in a pipeline to make the connection between two spigots of pipes, fittings or valves, etc. , and, allows for radial and axial displacements. NOTE Some couplings are designed such that they can be slid over the pipes in order
