1、BSI Standards PublicationBS ISO 13460-1:2015Agricultural irrigationequipment Plastics saddlesPart 1: Polyethylene pressure pipesBS ISO 13460-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 13460-1:2015.The UK participation in its preparation was entruste
2、d to TechnicalCommittee AGE/30, Irrigation and drainage equipment.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 correctapplication.
3、 The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 86260 1ICS 65.060.35Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 3
4、0 November 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 13460-1:2015 ISO 2015Agricultural irrigation equipment Plastics saddles Part 1: Polyethylene pressure pipesMateriel agricole dirrigation Selles de derivation en matiere plastique Partie 1: Tuyau en polye
5、thylene utilise sous pressionINTERNATIONAL STANDARDISO13460-1First edition2015-10-15Reference numberISO 13460-1:2015(E)BS ISO 13460-1:2015ISO 13460-1:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified,
6、no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs mem
7、ber body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 13460-1:2015ISO 13460-1:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions .
8、 14 Materials . 25 Workmanship and appearance . 26 Branch outlet 37 Material strength test 38 Mechanical and hydraulic characteristics 58.1 General . 58.2 Resistance to short-term internal hydrostatic pressure . 58.3 Resistance to long-term internal hydrostatic pressure . 68.4 Resistance to internal
9、 under-pressure . 68.5 Resistance to pressure during application of a bending moment to the branch outlet . 68.6 Resistance to sliding of the saddle on the pipe . 78.6.1 Preparation . 78.6.2 Resistance to rotational sliding . 78.6.3 Resistance to axial sliding 89 Marking 9 ISO 2015 All rights reserv
10、ed iiiContents PageBS ISO 13460-1:2015ISO 13460-1:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees
11、. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Intern
12、ational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the diffe
13、rent types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shal
14、l not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document i
15、s information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT)
16、 see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 18, Irrigation and drainage equipment and systems.This first edition of ISO 13460-1 cancels and replaces ISO 1346
17、0:1998, which has been technically revised and renumbered.iv ISO 2015 All rights reservedBS ISO 13460-1:2015INTERNATIONAL STANDARD ISO 13460-1:2015(E)Agricultural irrigation equipment Plastics saddles Part 1: Polyethylene pressure pipes1 ScopeThis part of ISO 13460-1 specifies the required propertie
18、s and test methods for plastics saddles for assembly on polyethylene (hereinafter “PE”) pressure pipes used in above-ground and underground irrigation systems conveying water at temperatures not exceeding 50 C.2 Normative referencesThe following documents, in whole or in part, are normatively refere
19、nced 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.ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Pa
20、rt 1: Dimensions, tolerances and designationISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designationISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal
21、 pressure Part 1: General methodISO 3459, Plastic piping systems Mechanical joints between fittings and pressure pipes Test method for leaktightness under negative pressureISO 4427-2, Plastics piping systems Polyethylene (PE) pipes and fittings for water supply Part 2: PipesISO 8779, Plastics piping
22、 systems Polyethylene (PE) pipes for irrigation SpecificationsISO 17885, Plastics piping systems Mechanical fittings for pressure piping systems Specifications3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1saddlefitting used to connect a branch
23、 outlet to a polyethylene pipe through a boring in the wall of the pipe3.2branch outletoutlet of a saddle the axis of which is perpendicular to the axis of the pipe on which the saddle is installedNote 1 to entry: See Figure 1. ISO 2015 All rights reserved 1BS ISO 13460-1:2015ISO 13460-1:2015(E)a) W
24、ithout protrusion into the pipe b) With protrusion into the pipeFigure 1 Examples of plastics saddles3.3nominal sizenumerical designation used to refer to the size of a saddle which is identical to the nominal diameter of the pipe on which it is intended for assembly3.4nominal pressurePNused to clas
25、sify a saddle which is identical to the nominal pressure of the pipe on which it is intended for assembly4 MaterialsMetal parts of a saddle shall be corrosion-resistant.All parts of a saddle coming in contact with water shall be resistant to agricultural chemicals used in irrigation, such as fertili
26、zer solutions, plant protection materials and fluids used for removal of blockages in emitters and emitting pipe systems.Plastics parts of a saddle that are exposed to ultraviolet radiation in working conditions under which the saddle operates shall be resistant to ultraviolet radiation.Plastics par
27、ts that enclose waterways shall be opaque or shall be provided with an opaque cover.5 Workmanship and appearanceThe saddle shall be free of burrs or other features likely to damage the pipe or present a safety hazard during installation. The bore of the saddle outlet shall be free of irregularities
28、which may restrict water flow.The saddle shall be designed to cause minimum interference to the flow of water in the pipe on which it is installed.Internal and external surfaces of the saddle shall be clean and free of grooves, pinholes, voids or other features likely to affect the performance and s
29、ervice of the system.The saddle shall be manufactured at such diameter and within such tolerances that will permit its use with PE pipes in accordance with ISO 4427-2 and ISO 8779.2 ISO 2015 All rights reservedBS ISO 13460-1:2015ISO 13460-1:2015(E)6 Branch outletThe branch outlet shall have a thread
30、ed connection or another type of connection suitable for connecting a pipe or a fitting.A threaded connection shall have a thread that conforms to ISO 7-1 or ISO 228-1 as an integral thread or be provided with an adaptor to such a thread.A plastic female thread bigger than 25,4 mm shall be provided
31、with a metal reinforcing ring.A metal reinforcing ring is also recommended for smaller plastic female threads.7 Material strength testPerform the following pressure test on an injection-moulded tubular test piece with the dimensions shown in Figure 2 and made of the same plastics material as the sad
32、dle body.The wall thickness of the test specimen (e), shown in Figure 2, shall not be less than 2,9 mm and not more than 4,6 mm.Dimensions in millimetresFigure 2 Test specimenTest the specimen in accordance with ISO 1167-1 under the test conditions specified in Table 2.The test specimen shall not su
33、ffer fractures or any other type of damage during the test.Table 1 Test conditionsMaterial Temperature Induced stress DurationCMPahABS20 38,7 170 4 1 000PE 8020 11,4 180 4 1 000PE 10020 14,4 180 5 1 000PE-RT Type 120 9,9 195 3,4 1 000PE-RT Type 220 10,8 195 3,6 1 000 ISO 2015 All rights reserved 3BS
34、 ISO 13460-1:2015ISO 13460-1:2015(E)Material Temperature Induced stress DurationCMPahPE-X20 12,0 195 4,4 1 000POM-C20 59 195 6 1 000POM-H20 63 160 10 1 000PP-B20 16 195 2,6 1 000PP-H20 21 195 3,5 1 000PP-R20 16 195 3,5 1 000PP-RCT20 15,0 195 3,8 1 000PVC-U20 42 120 32 1 000PVC-HI20 42 120 32 1 000PV
35、DF20 32,6 195 11,5 1 000PPSU20 57, 2 195 21,3 1 000PSU20 66 195 9,7 1 000PB20 15,5 195 6 1 000PA 11 16020 19 1 00080 10 165PA 11 18020 20 1 00080 11,5 165PA 12 16020 19 1 00080 10 165PA 12 18020 20 1 00080 11,5 165PA12-GF3020 50 160 20 1 000PA12-GF5020 50 160 20 1 000Table 1 (continued)4 ISO 2015 Al
36、l rights reservedBS ISO 13460-1:2015ISO 13460-1:2015(E)Material Temperature Induced stress DurationCMPahPA12-GF6520 50 160 20 1 000ECTFE20 26 4080 8 170NOTE If second- or third-party certification is applicable, this test can be omitted if the saddle manufacturer can present to the testing laborator
37、y a satisfactory test report on the materials strength requirement compliance.8 Mechanical and hydraulic characteristics8.1 GeneralTest the specimens in accordance with the tests specified in 8.2 to 8.6 with each saddle assembled on a PE pipe. The nominal pressure of the pipe used in the tests shall
38、 be equal to or greater than the nominal pressure of the saddle.If the branch outlet of the saddle has a fitting complying with ISO 17885 for connecting to a PE pipe, perform the pressure tests described in 8.2 to 8.6 with a pipe of the appropriate section and with a minimum free length of 3D measur
39、ed from the branch outlet (where D is the nominal diameter of the pipe).8.2 Resistance to short-term internal hydrostatic pressureAssemble the saddle on a PE pipe of nominal diameter equal to the nominal size of the saddle, according to the manufacturers instructions. The PE pipe shall extend at lea
40、st three times its nominal diameter from each side of the saddle, as a free length (see Figure 3).Plug the saddle branch outlet with a plug suited to the shape of the branch outlet connection.Plug one end of the pipe and fill the complete assembly with water through the other end of the pipe, taking
41、 care to ensure that all air is expelled from the system.Increase the pressure gradually and maintain the test conditions given in Table 2.Key1 saddleFigure 3 Extension of the PE pipe from each side of the saddleTable 1 (continued) ISO 2015 All rights reserved 5BS ISO 13460-1:2015ISO 13460-1:2015(E)
42、Table 2 Test conditions for resistance to short-term internal hydrostatic pressureTemperatureCPressurebarTest durationh20 2 1,5 PN 1There shall be no leakage, fracture, crack or other defect in the saddle or in the section of pipe on which the saddle is assembled.8.3 Resistance to long-term internal
43、 hydrostatic pressureRepeat the test described in 8.2 using the test conditions given in Table 1.There shall be no leakage, fracture, crack or other defect in the saddle or in the section of pipe on which the saddle is assembled.8.4 Resistance to internal under-pressureWhen tested in accordance with
44、 ISO 3459, the saddle shall conform to the requirements of ISO 3459.8.5 Resistance to pressure during application of a bending moment to the branch outletAssemble the saddle on a PE pipe of nominal diameter equal to the nominal size of the saddle, according to the manufacturers instructions. Connect
45、 a suitable length of pipe to the branch outlet.Fix the assembly to a flat and rigid surface as indicated in Figure 4 so that its ends are fixed to the surface at a distance not less than 10 times the nominal diameter of the pipe from both sides of the saddle.1Key1 bending moment2 fixation point of
46、the pipeFigure 4 Setup for the bending moment testApply a hydraulic pressure to the system as specified in Table 3 while applying a bending moment, M, to the branch outlet, the numerical value of which is calculated from Formula (1):M = 0,4 D (1)whereM is the bending moment, in newton metres;6 ISO 2
47、015 All rights reservedBS ISO 13460-1:2015ISO 13460-1:2015(E)D is the nominal size of the saddle, in millimetres.Apply the bending moment parallel to the pipe axis.Table 3 Test conditions for resistance to internal hydrostatic pressure during application of the bending momentTemperatureCPressurebarT
48、est durationh20 3 1,5 PN 1There shall be no leakage, fracture, crack or other defect in the saddle or in the section of pipe on which the saddle is assembled.8.6 Resistance to sliding of the saddle on the pipe8.6.1 PreparationAssemble the saddle on a PE pipe of nominal diameter equal to the nominal
49、size of the saddle, according to manufacturers instructions. Fix the pipe to a flat and rigid surface as shown in Figure 4.8.6.2 Resistance to rotational slidingWith the saddle assembled and the pipe fixed in position as indicated in Figure 4, apply a rotation moment, T, to the saddle (see Figure 5) for one minute, where T is calculated using Formula (2):T = 0,4 D (2)whereT is the rotation moment, in newton metres;D is the nominal size of the saddle, in millimetres. ISO 2015 Al
