1、DRAFT FOR DEVELOPMENTDD CEN/TS 14421:2006Hose tail and ferrule for crimping and swagingICS 23.040.70g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58
2、DD CEN/TS 14421:2006This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 31 January 2008 BSI 2008ISBN 978 0 580 53483 6National forewordThis Draft for Development is the UK implementation of CEN/TS 14421:2006.This publication is not to be reg
3、arded as a British Standard.It is being issued in the Draft for Development series of publications and is of a provisional nature. It should be applied on this provisional basis, so that information and experience of its practical application can be obtained.Comments arising from the use of this Dra
4、ft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion to a European standard. A review of this publication will be initiated not later than 3 years after its publication by the European organization so that a decision can b
5、e taken on its status. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards.According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a Eur
6、opean Standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent to the Secretary of the responsible BSI Technical Committee at British Standards House, 389 Chiswick High Road, London W4 4AL.The UK participation in its preparation was entrusted to Technica
7、l Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct a
8、pplication.Amendments issued since publicationAmd. No. Date CommentsTECHNICAL SPECIFICATIONSPCIFICATION TECHNIQUETECHNISCHE SPEZIFIKATIONCEN/TS 14421December 2006ICS 23.040.70English VersionHose tail and ferrule for crimping and swagingDouilles et manchons pour sertissage et emboutissage Schlauchstu
9、tzen und Presshlsen zum internen undexternen VerpressenThis Technical Specification (CEN/TS) was approved by CEN on 24 September 2006 for provisional application.The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit
10、theircomments, particularly on the question whether the CEN/TS can be converted into a European Standard.CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS availablepromptly at national level in an appropriate form. It is permissible
11、 to keep conflicting national standards in force (in parallel to the CEN/TS)until the final decision about the possible conversion of the CEN/TS into an EN is reached.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany,
12、 Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManageme
13、nt Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. CEN/TS 14421:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Requirements.7 5 Dimension
14、s and designation8 6 Swaging or crimping force .16 7 Materials .16 8 Surface finish .17 9 Welding .17 10 Marking .17 11 Testing and documentation18 12 Information to be supplied by the purchaser .18 Bibliography 19 CEN/TS 14421:20063 Foreword This document (CEN/TS 14421:2006) has been prepared by Te
15、chnical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies”, the secretariat of which is held by BSI. This Technical Specification is part of a suite of standards related to the fittings of rubber and plastic hoses and hose assemblies EN 14420-1: Hose fittings with clamp units - Par
16、t 1: Requirements, survey, designation and testing EN 14420-2: Hose fittings with clamp units - Part 2: Hose side parts of hose tail EN 14420-3: Hose fittings with clamp units - Part 3: Clamp units, bolted or pinned EN 14420-4: Hose fittings with clamp units - Part 4: Flange connections EN 14420-5:
17、Hose fittings with clamp units - Part 5: Threaded connections EN 14420-6: Hose fittings with clamp units - Part 6: TW tank truck couplings EN 14420-7: Hose fittings with clamp units - Part 7: Cam locking couplings EN 14420-8: Hose fittings with clamp units - Part 8: Symmetrical half coupling (Guille
18、min system) EN 14422: Clamp type coupling assemblies for LPG transfer hoses EN 14423: Clamp type coupling assemblies for use with steam hoses rated for pressures up to 18 bar EN 14424: Hose fittings with screwed ferrules According to the CEN/CENELEC Internal Regulations, the national standards organ
19、izations of the following countries are bound to announce this CEN Technical Specification: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Rom
20、ania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. CEN/TS 14421:20064 1 Scope This Technical Specification applies to hose tails and ferrules for crimping and swaging and covers the following types of attachment between hose and couplings: internal swaging; external swaging; ex
21、ternal crimping. Maximum working pressure 10 bar, maximum working temperature 150 C (depending on the respective material). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For unda
22、ted references, the latest edition of the referenced document (including any amendments) applies. EN 10088-1, Stainless steels Part 1: List of stainless steels EN 10204, Metallic products Types of inspection documents EN 10213-4, Technical delivery conditions for steel castings for pressure purposes
23、 Part 4: Austenitic and austenitic-ferritic steel grades EN 14420-1, Hose fittings with clamp units Part 1: Requirements, survey, designation and testing EN ISO 1307, Rubber and plastics hoses for general-purpose industrial applications Bore diameters and tolerances, and tolerances on length (ISO 13
24、07:1992) EN ISO 8031, Rubber and plastics hoses and hoses assemblies Determination of electrical resistance (ISO 8031:1993) EN ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330:1998) EN ISO 15607, Specification and qualification of welding procedures for metallic materials
25、 General rules (ISO 15607:2003) EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 1: Arc welding (ISO 15609-1:2004) EN ISO 15614-1:2004, Specification and qualification of welding procedures for metallic materials Weldin
26、g procedure test Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1:2004) CEN/TS 14421:20065 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 internal swage act of expanding the hose tail to compress
27、 the hose material against the ferrule, therefore providing near unrestricted full flow through the bore of the connection, which results in reduced turbulence of the fluid flowing through the hose. Internal swaging is achieved by drawing a hardened tool (commonly known as a dolly) through the tail
28、to expand it. The compressive force exerted on the hose by the coupling causes the hose material to flow into the serrated cavities of both tail and ferrule thus providing a secure mechanical bond Key 1 shape of tail after swaging 2 shape of tail before swaging Figure 1 Internal swage 3.2 external s
29、wage act of compressing the hose ferrule onto the hose material in order to compress it against the hose tail. External swaging is achieved by pushing the hose and coupling assembly through a die aperture of smaller diameter than the external diameter of the ferrule. Similar in principle to internal
30、 swaging, the external diameter of the ferrule is permanently reduced such that the resulting compressive force exerted onto the hose causes it to flow into the serrated cavities of both tail and ferrule thus providing a secure mechanical bond CEN/TS 14421:20066 Key 1 shape of ferrule after swaging
31、2 shape of ferrule before swaging Figure 2 External swage 3.3 external crimping with external crimping the outside of the ferrule is reduced to compress the hose material against the tail by pressure being applied on the outside of the ferrule, thereby causing the hose material to flow into the serr
32、ated cavities between the tail and the ferrule effecting a secure mechanical bond Key 1 shape of ferrule after crimping 2 shape of ferrule before crimping Figure 3 External crimping CEN/TS 14421:20067 4 Requirements 4.1 General This Technical Specification is intended for couplings operating within
33、the following operating conditions: 4.2 Fluid pressure Maximum working pressure 10 bar; test pressure 30 bar; minimum burst pressure 50 bar. NOTE 1 MPa = 10 bar. 4.3 Temperature Range of working temperature: carbon steel (Cst) 29 C to 100 C; stainless steel (Stst) 50 C to 150 C. NOTE Hose couplings
34、can operate outside of the above operating conditions but they are not covered by this Technical Specification. CEN/TS 14421:20068 5 Dimensions and designation 5.1 Survey 5.1.1 Internal swage tail Table 1 Tail fittings dimensions Internal swage Dimensions in millimetres d1d2d3d4d5l1l2l3l4Hose tail D
35、N/nb 05,04,00+ 0,25 nom min. min. max. Ref 0,75 50 (2“) 51 43 56 63 53 100 45 145 5 65 (2“) 64 56 68 73 65 100 55 155 5 80 (3“) 76 68 84 88,9 78 125 60 185 5 100 (4“) 102 93 109 114,3 103 150 63 213 5 125 (5“) 127 118 135 141,3 128 175 67 242 5 150 (6“) 152 143 162 168,3 154 200 70 270 5 200 (8“) 20
36、3 192 211 219,1 204 250 73 323 5 Figure 4 Internal swage tail NOTE For serration detail see Figure 8. CEN/TS 14421:20069 5.1.2 External swage tail Table 2 Tail fittings dimensions External swage Dimensions in millimetres d1d2d3d4d5l1l2l3l4Hose tail DN/nb 05,04,00+ 0,25 nom min. min. max. Ref 0,75 50
37、 (2“) 51 43 56 63 66 100 45 145 5 65 (2“) 64 56 68 73 78 100 55 155 5 80 (3“) 76 68 84 88,9 94 125 60 185 5 100 (4“) 102 93 109 114,3 119 150 63 213 5 125 (5“) 127 118 135 141,3 145 175 67 242 5 150 (6“) 152 143 162 168,3 172 200 70 270 5 200 (8“) 203 192 211 219,1 226 250 73 323 5 Figure 5 External
38、 Swage Tail NOTE For serration detail see Figure 8. Retaining ring may be held in position by welding (as shown) or other suitable secure method. CEN/TS 14421:200610 5.1.3 Internal swage ferrule Table 3 Ferrule dimensions Internal swage Dimensions in millimetres t1 at2l1l2d1d2d3Hole dia Clearance cF
39、errule DN/nb min. 05,0min. 1,0 min. 25,00+No of holes (optional) 1,0 50 (2“) 3 4 100 19 b 58 2 12 2 65 (2“) 3 4 100 25 b 69 2 12 2 80 (3“) 3 4 125 25 b 86 2 12 2 100 (4“) 3 4 150 32 b 111 2 12 2 125 (5“) 4 4 175 35 b 137 2 16 2 150 (6“) 4 4 200 35 b 163 2 16 3 200 (8“) 5 4 250 38 b 214 Dependant upo
40、n the Hose OD 2 16 3 a Wall thickness t1= 2IDOD bd1= Hose OD + Clearance cClearance = free space between OD of hose and ID of ferrule EXAMPLE To calculate d1for a DN 100 (4“) hose with an OD of 120 mm Hose OD = 120 mm + Clearance 2 mm + t Wall thickness t1 2 = 6 mm d3= 128 mm Figure 6 Internal swage
41、 ferrule NOTE For serration detail see Figures 10 and 11. CEN/TS 14421:200611 5.1.4 External swage ferrule Table 4 Ferrule dimensions External swage Dimensions in millimetres t1 at2l1l2d1d2d3Hole dia Clearance cFerrule DN/nb min. 5,0 min. 1,0 min. 25,00+No of holes (optional) 1,0 50 (2“) 3 4 100 19
42、b 62 2 12 2 65 (2“) 3 4 100 25 b 75 2 12 2 80 (3“) 3 4 125 25 b 90 2 12 2 100 (4“) 3 4 150 32 b 116 2 12 2 125 (5“) 4 4 175 35 b 143 2 16 2 150 (6“) 4 4 200 35 b 170 2 16 3 200 (8“) 5 4 250 38 b 221 Dependant upon the Hose OD 2 16 3 a Wall thickness t1= 2IDOD bd1= Hose OD + Clearance cClearance = fr
43、ee space between OD of hose and ID of ferrule EXAMPLE To calculate d1for a DN 100 (4“) hose with an OD of 120 mm Hose OD = 120 mm + Clearance 2 mm + t Wall thickness t1 2 = 6 mm d3= 128 mm Figure 7 External swage ferrule NOTE For serration detail see Figures 10 and 11. CEN/TS 14421:200612 5.1.5 Serr
44、ation details Internal and external swage tails Table 5 Internal and external swage tails Dimensions in millimetres Number of serrations aw1h1Hose tail DN/nb min. Nom 0,2 50 (2“) 12 6 1,5 65 (2“) 13 6 1,5 80 (3“) 9 10 1,8 100 (4“) 12 10 1,8 125 (5“) 14 10 1,8 150 (6“) 17 10 1,8 200 (8“) 22 10 1,8 aF
45、or softwall hoses typically. They shall be as defined in EN ISO 8330. The number of serrations stated shall be reduced by removing the first 2 serrations according to Figure 9. Figure 8 Serration Figure 9 Reduced serration CEN/TS 14421:200613 5.1.6 Serration details Internal and external swage ferru
46、les Table 6 Internal and external swage ferrules Dimensions in millimetres Number of serrations aw1h1Style Hose tail DN/nb min. Nominal 0,2 50 (2“) 12 6 0,8 P 65 (2“) 13 6 0,8 P 80 (3“) 9 10 0,8 S 100 (4“) 12 10 0,8 S 125 (5“) 14 10 0,8 S 150 (6“) 17 10 0,8 S 200 (8“) 22 10 0,8 S aWall thickness t1=
47、 2IDOD Figure 10 Style S serration Figure 11 Style P serration CEN/TS 14421:200614 5.1.7 External crimp tail Serrations are permitted on the outside of the hose tail for all types. The number of serrations as well as the form of the serrations may be as Figures 8 or 9, or alternatively wave form, at
48、 the discretion of the coupling manufacturer. Table 7 Tail fittings dimensions, external crimping Dimensions in millimetres Nominal hose bore lmin.Hose tail OD mm/inch mm mm 20 (“) 25 (1“) 25 25,4 32 (1 “) 30 31,7 40 (1 “) 38 38,1 50 (2“) 50 50,8 65 (2 “) 60 63,5 80 (3“) 73 76,2 100 (4“) 100 101,6 K
49、ey 1 thread to be specified by the manufacturer (e.g. according to EN ISO 228-1) Figure 12 Tail fittings dimensions for external crimping CEN/TS 14421:200615 5.1.8 External crimp ferrule Table 8 Ferrule fittings dimensions, external crimping Dimensions in millimetres Nominal hose bore Ferrule length (min.) Hose OD aFerrule wall- thickness (s)Number of holes Number of slots Max. clearance m
