1、BSI Standards PublicationBS EN 16397-2:2014Flexible couplingsPart 2: Characteristics and testing for metalbanded flexible couplings, adaptors andbushesBS EN 16397-2:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16397-2:2014.The UK participation in its pre
2、paration was entrusted to TechnicalCommittee B/505, Wastewater engineering.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapp
3、lication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 77788 2ICS 23.040.60Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Commi
4、ttee on 30 November 2014.Amendments issued since publicationDate Text affectedBS EN 16397-2:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16397-2 November 2014 ICS 23.040.60 English Version Flexible couplings - Part 2: Characteristics and testing for metal banded flexible couplings, adapt
5、ors and bushes Raccords flexibles - Partie 2: Caractristiques et essais des raccords flexibles quips de bandes mtalliques, des raccords dadaptation et des bagues Flexible Kupplungen - Teil 2: Eigenschaften und Prfung von flexiblen Kupplungen, bergangsbauteilen und Ausgleichsringen mit Metallband Thi
6、s European Standard was approved by CEN on 30 August 2014. 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 referen
7、ces 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 m
8、ember 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,
9、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 COMIT EUROPEN DE NORMALISATION EUROPISCHE
10、S KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16397-2:2014 EBS EN 16397-2:2014EN 16397-2:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 N
11、ormative references 4 3 Terms and definitions .4 4 Characteristics .8 4.1 General 8 4.2 Materials .8 4.2.1 Stainless steel 8 4.2.2 Rubber 8 4.3 Product characteristics .9 4.3.1 Dimensional tolerances 9 4.3.2 Tightness of joint assemblies . 10 4.3.3 Strength of clamping and shear bands 10 4.3.4 React
12、ion to fire 11 4.3.5 Durability . 11 4.3.6 Dangerous substances 11 5 Test methods . 11 5.1 Clamping band assembly torque tests . 11 5.1.1 Apparatus 11 5.1.2 Procedure 11 5.2 Clamping and shear band fixing strength test 11 5.2.1 Apparatus 11 5.2.2 Procedure 11 6 Assessment and verification of constan
13、cy of performance - AVCP . 12 6.1 General . 12 6.2 Type testing . 12 6.2.1 General . 12 6.2.2 Test samples, testing and compliance criteria 14 6.2.3 Test reports . 15 6.3 Factory production control (FPC) . 15 6.3.1 General . 15 6.3.2 Requirements 15 6.3.3 Product specific requirements 18 6.3.4 Proce
14、dure for modifications 19 7 Marking, labelling and packaging . 19 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Construction Products Regulations . 21 Bibliography . 31 BS EN 16397-2:2014EN 16397-2:2014 (E) 3 Foreword This document (EN 16397-
15、2:2014) has been prepared by Technical Committee CEN/TC 165 “Wastewater engineering”, the secretariat of which is held by DIN. 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 May 2015 and conflict
16、ing national standards shall be withdrawn at the latest by August 2016. Attention is drawn 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
17、has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. EN 16397, Flexible c
18、ouplings, contains the following parts: Part 1: Performance requirements; Part 2: Characteristics and testing for metal banded flexible couplings, adaptors and bushes. This standard takes into account the requirements of EN 476. According to the CEN-CENELEC Internal Regulations, the national standar
19、ds 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, Luxe
20、mbourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16397-2:2014EN 16397-2:2014 (E) 4 1 Scope This European Standard specifies the materials and dimensions for metal banded flexible couplings and adaptors
21、 and bushes for use with pipes and fittings in drain and sewer systems, usually operated under gravity and periodic hydraulic surcharge, both above and below ground inside or outside buildings and intended to connect pipes for: repair of damaged pipelines; connecting pipes of different materials and
22、/or diameters; jointing short/cut lengths of pipe; jointing specific pipe systems; jointing post-inserted preformed junctions. The coupling consists of a moulded or extruded rubber sleeve with two stainless steel clamping bands with or without a stainless steel shear band. The clamping bands enable
23、the sleeve to form a seal with the pipes to be joined. The shear band gives resistance to shear forces. Connections may be made between pipes which cannot be satisfactorily joined by a coupling alone, of dissimilar sizes or material, by using an appropriate bush or bushes with the coupling or by usi
24、ng an appropriate adaptor. 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 do
25、cument (including any amendments) applies. EN 681-1, Elastomeric seals - Materials requirements for pipe joint seals used in water and drainage applications - Part 1: Vulcanized rubber EN 10088-1:2014, Stainless steels Part 1: List of stainless steels EN 10088-2, Stainless steels - Part 2: Technical
26、 delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes EN 10151:2002, Stainless steel strip for springs - Technical delivery conditions EN 13501-1, Fire classification of construction products and building elements Part 1: Classification using data from rea
27、ction to fire tests EN 16397-1:2014, Flexible couplings Part 1: Performance requirements EN ISO 7500-1, Metallic materials - Verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Verification and calibration of the force-measuring system (ISO 7500-1) EN IS
28、O 9445-1:2010, Continuously cold-rolled stainless steel - Tolerances on dimensions and form - Part 1: Narrow strip and cut lengths (ISO 9445-1:2009) ISO 3302-1:2014, Rubber Tolerances for products Part 1: Dimensional tolerances 3 Terms and definitions For the purposes of this document, the following
29、 terms and definitions apply. BS EN 16397-2:2014EN 16397-2:2014 (E) 5 3.1 metal banded flexible coupling moulded or extruded and joined rubber sleeve, with or without bushes or shear band, with adjustable stainless steel clamping bands by which it is secured to the pipe ends 3.1.1 Type 1 coupling (w
30、ithout shear band) moulded or extruded and joined rubber sleeves with adjustable stainless steel clamping bands by which it is secured to the pipe ends without shear band Note 1 to entry: An example of a typical Type 1 coupling is shown in Figure 1. Key 1 pipe 1 2 clamping band with drive unit 3 sle
31、eve 4 pipe 2 b width of sleeve d3outside diameter NOTE More than one drive unit could be used where required. Figure 1 Example of Type 1 coupling (without shear band) 3.1.2 Type 2 coupling (with shear band) moulded or extruded and joined rubber sleeve with adjustable stainless steel clamping bands b
32、y which it is secured to the pipe ends and a shear band to give resistance to shear loads Note 1 to entry: An example of a typical Type 2 coupling is shown in Figure 2 and Figure 3. BS EN 16397-2:2014EN 16397-2:2014 (E) 6 Key 1 pipe 1 2 pipe 2 3 drive unit 4 adjustor unit 5 shear band 6 sleeve 7 cla
33、mping band b width of sleeve d3outside diameter NOTE More than one drive unit could be used where required. Figure 2 Example of Type 2 coupling (with shear band) Key 1 shear band adjustors Figure 3 Example of elevation showing shear band adjustors BS EN 16397-2:2014EN 16397-2:2014 (E) 7 3.2 metal ba
34、nded adaptor moulded stepped rubber sleeve with adjustable stainless steel clamping bands by which it is secured to pipes of different outside diameters Note 1 to entry: Adaptors may incorporate an abrupt change of section. An example of a metal banded adaptor is shown in Figure 4. Key 1 pipe 1 2 pi
35、pe 2 3 moulded rubber 4 drive unit 5 clamping band b width of sleeve d3outside diameter NOTE More than one drive unit could be used where required. Figure 4 Example of metal banded adaptor 3.3 bush moulded or extruded and joined rubber section only used with couplings having shear bands to compensat
36、e for variations between the outside diameters of pipes which cannot be satisfactorily joined by a coupling alone 3.4 nominal size of a flexible coupling and an adaptor maximum outside diameter of the pipes with which a flexible coupling or adaptor can be used BS EN 16397-2:2014EN 16397-2:2014 (E) 8
37、 3.5 shear band component for bearing of shear loads after installation 3.6 clamping band means of clamping the flexible coupling to a pipe using a specified force 3.7 adjustor strip shear band fixing means of clamping the shear band to the flexible coupling using a specified force 4 Characteristics
38、 4.1 General Metal banded flexible couplings and adaptors and bushes shall be free from such defects as would impair their function when in service. Coupling, adapter and bush size is defined by the range of pipe outside diameter (OD) with which it will meet the performance requirements of this Euro
39、pean Standard. 4.2 Materials 4.2.1 Stainless steel Stainless steels used for clamping bands, shear band clamps and adjustor units shall be either 1.4307, 1.4301, 1.4404, 1.4401, 1.4571, 1.4303 or 1.4567 listed in EN 10088-1:2014, Table 4 or have equivalent or greater corrosion resistance. The compon
40、ents formed from strip material shall be manufactured from tempered rolled steel to the above specification with a tensile strength level of +C850 according to EN 10088-2 or hardness HV (300 25) according to EN 10151:2002. All stainless steel parts shall be edge dressed and free from sharp edges to
41、prevent injury to the installer and damage to the rubber sleeve. The worm drive units used for shear bands shall be of the same design and specification as those for the clamping bands. 4.2.2 Rubber 4.2.2.1 General Rubber used in coupling and adaptor bodies and bushes shall comply with EN 681-1. 4.2
42、.2.2 Joining rubber sections Where it is necessary to join rubber sections this shall be using the vulcanisation process. BS EN 16397-2:2014EN 16397-2:2014 (E) 9 4.3 Product characteristics 4.3.1 Dimensional tolerances 4.3.1.1 General Only minimum dimensions are specified in Table 1 and Table 2. Man
43、ufacturers can use dimensions greater than these to suit the specific application. 4.3.1.2 Rubber components The tolerances on the manufactured dimensions of moulded and fabricated rubber components shall comply with ISO 3302-1:2014, Class M3. 4.3.1.3 Extruded rubber The tolerances on the manufactur
44、ed dimensions of extruded rubber strip shall comply with ISO 3302-1:2014, Class E3. 4.3.1.4 Adaptors and Type 1 couplings Dimensions of rubber and metal components shall be in accordance with the manufacturers declared specifications. 4.3.1.5 Type 2 couplings Minimum dimensions of the rubber and met
45、al components shall comply with Table 1 for Type 2A couplings or Table 2 for Type 2B couplings. Tolerances on stainless steel thicknesses shall comply with EN ISO 9445-1:2010, Table 1, normal grade. Type 2A couplings can be used where the jointed pipes are of the same outside diameter to tight toler
46、ances. In addition the pipe ends shall be square, for example to the tolerance specified in EN 295-1:2013, 5.4, and with a maximum separation of 10 mm. For larger separations and tolerances on squareness of ends and other applications, Type 2B couplings are required. Table 1 Minimum dimensions of Ty
47、pe 2A couplings Dimensions in millimetres Nominal coupling sizeaWidth of sleeve Thickness under clamping band Width of shear band Thickness of shear band Width of clamping band Thickness of clamping band Up to 400 102 3,0 32 0,4 12 0,6 4011000 160 3,5 32 0,5 12 0,6 amaximum outside diameter of the p
48、ipe which can be used with a metal banded flexible coupling or adaptor.BS EN 16397-2:2014EN 16397-2:2014 (E) 10 Table 2 Minimum dimensions of Type 2B couplings Dimensions in millimetres Nominal coupling sizeaWidth of sleeve Thickness under clamping band Width of shear band Thickness of shear band Wi
49、dth of clamping band Thickness of clamping band Up to 200 120 7,0 54 0,35 12 0,6 201300 150 7,5 78 0,35 12 0,6 301 185 9,0 97 0,75 12 0,6 amaximum outside diameter of the pipe which can be used with a metal banded flexible coupling or adaptor. The minimum thickness of rubber under the shear band shall be 4 mm. 4.3.2 Tightness of joint assemblies Metal banded flexible couplings and adaptors and bushes shall be tested and declared in accordance with EN 16397-1:2014, 5.4. 4.3.3 Strength of clamping and shear bands 4.3.3.1 Testing of clampi
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