1、December 2016 English price group 13No 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).ICS 23.040.70!%f“2599167www.din.deD
2、IN EN 14423Clamp type coupling assemblies for use with steam hoses rated for pressures up to 18 bar;English version EN 14423:2013+A1:2016,English translation of DIN EN 14423:2016-12Schlaucharmaturen mit Klemmfassung fr Dampf bis 18 bar;Englische Fassung EN 14423:2013+A1:2016,Englische bersetzung von
3、 DIN EN 14423:2016-12Raccords avec colliers de serrage pour tuyaux vapeur utilisant une pression jusqu 18 bar;Version anglaise EN 14423:2013+A1:2016,Traduction anglaise de DIN EN 14423:2016-12SupersedesDIN EN 14423:201309www.beuth.deDocument comprises 27 pagesDTranslation by DIN-Sprachendienst.In ca
4、se of doubt, the German-language original shall be considered authoritative.12.16 DIN EN 14423:2016-12 2 A comma is used as the decimal marker. National foreword This document (EN 14423:2013+A1:2016) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies“
5、(Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Rohrleitungen und Dampfkesselanlagen (DIN Standards Committee Piping and Boiler Plant), Working Committee NA 082-00-02 AA Schlauchkupplungen. In addition to the legal units of measurem
6、ent, this standard also uses the unit “bar“. It is important to note that according to the German law on units in metrology, the use of these units is not permitted in official or business communications within Germany. Conversion: Unit not permitted Unit permitted Conversion Bar Pa 1 bar = 105 Pa 1
7、 bar = 105kg/(ms2) = 0,1 N/mm2= 10 N/cm2= 105N/m2= 105 Pa The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 2859-1 DIN ISO 2859-1 Amendments This standard differs from DIN EN 14423:2013-09 as follows: a) Clause 4 “General requirements” has b
8、een updated; b) in Subclauses 5.1 and 5.2, symbol “GV” identifying the type of connector has been updated to read “R”; c) Subclauses 7.3.6 and 7.3.7 have been deleted; d) the lists of materials given in Subclauses 9.1, 9.2 and 9.3 have been revised; e) the standard has been editorially revised. Prev
9、ious editions DIN 2826: 1994-02 DIN EN 14423: 2005-02, 2013-09 National Annex NA (informative) Bibliography DIN ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection EUROPEAN STANDARD NORME EUROPENNE
10、EUROPISCHE NORM EN 14423:2013+A1 September 2016 ICS 23.040.70 Supersedes EN 14423:2013English Version Clamp type coupling assemblies for use with steam hoses rated for pressures up to 18 bar Raccords avec colliers de serrage pour tuyaux vapeur utilisant une pression jusqu 18 bar Schlaucharmaturen mi
11、t Klemmfassung fr Dampf bis 18 bar This European Standard was approved by CEN on 8 May 2013 and includes Amendment 1 approved by CEN on 13 June 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status
12、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, Germa
13、n). 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,
14、 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 andUnited
15、 Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14
16、423:2013+A1:2016 EEN 14423:2013+A1:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 5 4 General requirements . 6 5 Design and designation of coupling assemblies. 6 5.1 Design 6 5.2 Ordering designation system 9 6 Hose dimensions . 9 7 Design
17、 and dimensions 10 7.1 General . 10 7.2 Tail end fittings . 10 7.3 Connectors 11 7.3.1 Hose fittings with weld-neck collar (for loose flanges) (FL) 11 7.3.2 Hose fittings with weld-neck flange (FV) . 12 7.3.3 Welding connections . 13 7.3.4 Hose fittings with union nut, thread according to EN ISO 228
18、-1 . 13 7.3.5 Hose fittings with tapered male thread (R) 15 7.4 Clamps 16 8 Bolts and nuts 19 9 Materials 19 9.1 Tail end fittings . 19 9.2 Weld-neck collars and flanges according to EN 1092-1 . 20 9.3 Loose flanges according to EN 1092-1 21 9.4 Union nuts . 21 9.5 Wire ring . 21 9.6 Gaskets . 21 9.
19、7 Clamps 21 9.8 Bolts and nuts 22 10 Marking 22 10.1 Hose fittings . 22 10.2 Weld-neck collars and loose flanges . 22 10.3 Union nuts . 22 10.4 Clamps 23 11 Type testing and quality control . 23 11.1 General . 23 11.2 Type-test 23 11.3 Sampling 23 12 Mounting of hose fittings . 24 Bibliography . 25
20、DIN EN 14423:2016-12EN 14423:2013+A1:2016 (E) 3 European foreword This document (EN 14423:2013+A1:2016) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies”, the secretariat of which is held by BSI. This European Standard shall be given the status of a
21、national standard, either by publication of an identical text or by endorsement, at the latest by March 2017, and conflicting national standards shall be withdrawn at the latest by March 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of pate
22、nt rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document includes Amendment 1 approved by CEN on 13 June 2016. This document supersedes !EN 14423:2013“. The start and finish of text introduced or altered by amendment is indicated in the
23、 text by tags !“. In comparison to EN 14423:2004, the following changes have been made: In Clause 2, the normative references have been updated. Clause 3 “Terms and definitions” has been amended. The term “seals” has been replaced by “gaskets” (main gasket/thread gasket). Restrictions on nominal siz
24、e DN 32 have been deleted. In 9.1, 9.2, 9.3 and 9.8, the material lists have been revised. In Clause 10, the requirements for marking of hose fittings and union nuts have been revised. Clause 11 “Type testing and quality control” has been restructured and amended. The Bibliography has been reviewed.
25、 The standard has been revised editorially. 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, Estonia, Finland, Former
26、 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 14423:2016-12EN 14423:2013+A1:2016 (
27、E) 4 1 Scope This European Standard specifies the design, materials and dimensions of fittings for clamp type coupling assemblies for use with nominal sizes DN 15 to DN 50 steam and hot water hoses. It covers assemblies up to a maximum working pressure of 18 bar1)(corresponding to a saturated steam
28、temperature of 210 C). 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 docume
29、nt (including any amendments) applies. EN 10025-2, Hot rolled products of structural steels Part 2: Technical delivery conditions for non-alloy structural steels EN 10087, Free-cutting steels Technical delivery conditions for semi-finished products, hot-rolled bars and rods EN 10088-1, Stainless ste
30、els Part 1: List of stainless steels EN 10088-2, Stainless steels Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes EN 10213, Steel castings for pressure purposes EN 10226-1, Pipe threads where pressure tight joints are made on the thr
31、eads Part 1: Taper external threads and parallel internal threads Dimensions, tolerances and designation EN 10283, Corrosion resistant steel castings EN 12164, Copper and copper alloys Rod for free machining purposes EN 12168, Copper and copper alloys Hollow rod for free machining purposes EN 12420,
32、 Copper and copper alloys Forgings EN ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel Part 2: Nuts with specified property classes Coarse thread and fine pitch thread (ISO 898-2) EN 22768-1:1993, General tolerances Part 1: Tolerances for linear and angular dimensio
33、ns without individual tolerance indications (ISO 2768-1:1989) EN 22768-2:1993, General tolerances Part 2: Geometrical tolerances for features without individual tolerance indications (ISO 2768-2:1989) EN ISO 228-1, Pipe threads where pressure tight joints are not made on the threads Part 1: Dimensio
34、ns, tolerances and designation (ISO 228-1) EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch thread (ISO 898-1) 1) 1 bar = 0,1 MPa. DIN EN 14423:2016-12EN 14423:2013+A1:20
35、16 (E) 5 EN ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs (ISO 3506-1) EN ISO 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners Part 2: Nuts (ISO 3506-2) EN ISO 4032, Hexagon regular nuts (style 1) Prod
36、uct grades A and B (ISO 4032) EN ISO 4042, Fasteners Electroplated coatings (ISO 4042) EN ISO 4762, Hexagon socket head cap screws (ISO 4762) EN ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330) EN ISO 15607, Specification and qualification of welding procedures for metal
37、lic materials General rules (ISO 15607) ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptable quality limit (AQL) for lot-by-lot inspection 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8330
38、and the following apply. 3.1 DN (nominal size) alphanumeric designation of size for components of a pipework system, which is used for reference purposes., which comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size, in millimetres, of the
39、 bore or outside diameter of the end connections Note 1 to entry: The number following the letters DN does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard. Note 2 to entry: In those standards which use the DN designatio
40、n system, any relationship between DN and component dimensions should be given, e.g. DN/OD or DN/ID. SOURCE: EN ISO 6708:1995, 2.1 3.2 PN alphanumeric designation which is used for reference purposes related to a combination of mechanical and dimensional characteristics of a component of a hose fitt
41、ing and which comprises the letters PN followed by a dimensionless number Note 1 to entry: The number following the letters PN does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard. 3.3 arithmetical mean deviation of the
42、 assessed profile Ra arithmetic mean of the absolute ordinate values Z(x) within a sampling length: DIN EN 14423:2016-12EN 14423:2013+A1:2016 (E) 6 xxZlrRalrd)(10=SOURCE: EN ISO 4287:19982), 4.2.1 3.4 main gasket interface gasket between the male and female part of a coupling 3.5 thread gasket flat
43、faced gasket for threads according to EN ISO 228-1 4 General requirements When coupling assemblies, consisting of tail end fittings and clamps !deleted text“, are tested in accordance with Clause 11, the hose shall burst before the coupling is dismantled. The bolts shall be adjustable so that the ho
44、se is prevented from slipping. Proof pressure shall be at 90 bar; burst pressure shall be at 180 bar at ambient temperature. 5 Design and designation of coupling assemblies 5.1 Design A clamp type coupling assembly is shown in Figure 1. Key For 1 to 5 see Table 1 a connector end b tail end Figure 1
45、Coupling assembly 2) This document is currently impacted by the corrigendum EN ISO 4287:1998/AC:2008 and the draft amendment EN ISO 4287:1998/A1:2009. DIN EN 14423:2016-12EN 14423:2013+A1:2016 (E) 7 Table 1 List of coupling assembly components Item number Number of parts needed for one assembly Deno
46、mination 1 1 Tail end fitting 2 2 Clamp 3 4 Hexagon socket head cap screw 4 4 Hexagon nut 5 1 Connector NOTE A distinction is made between the connector end and the tail end of coupling assemblies. The former is the part by which the coupling is connected to an appliance or pipe (for various types o
47、f connectors, see Table 2), while the latter (including the tail end fitting and clamp) is fastened to a hose (see 7.2 and 7.4). DIN EN 14423:2016-12EN 14423:2013+A1:2016 (E) 8 Table 2 Types of connectors Illustration Type Description Nominal size DN Thread size l1 mm Details FL PN 40 loose flange w
48、ith weld-neck collar as in EN 10921 15 20 25 32 40 50 110 115 115 125 140 155 See 7.3.1 FV PN 40 weld-neck flange as in EN 10921 See 7.3.2 G Union nut with thread gasket, with parallel thread according toEN ISO 228-1a15 20 25 32 40 50 G G G 1 G 1 G 1 G 2 80 80 80 90 105 115 See 7.3.4 !R“ Tapered mal
49、e thread with external thread according to EN 102261a15 20 25 32 40 50 R R R 1 R 1 R 1 R 2 95 95 100 110 125 140 See 7.3.5 aOther threads may be agreed between the purchaser and manufacturer. DIN EN 14423:2016-12EN 14423:2013+A1:2016 (E) 9 5.2 Ordering designation system Example for an ordering designation: Denomination Characteristics Coupling assembly EN 14423 FL 20 1.4571 1.0038 C
