ISO INTERNATIONAL STANDARD 8224-2 First edition 1991-02-01 Traveller irrigation machines Part 2: Softwall hose and couplings -- Test methods Machinesd'arrosagemobiles Partie2:Tuyau flexible et raccords --Methodes d'essai Referencenumber ISO 8224-2:1991(E) ISO 8224-2:1991(E) Foreword isO(the International Organization for Standardization)is a worldwide federation of national standards bodies (isO member bodies).The work of preparing International Standards isnormally carriedout through IsO technical committees. Each member body interested in a subject for whichatechnicalcommitteehasbeenestablishedhastherighttobe represented on that committee.International organizations,govern- mental and non-governmental,in liaison with IsO,also take part in the work.iso collaborates closely with theInternational Electrotechnical Commission (IEC)on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- bodies castingavote. InternationalStandardisO8224-2waspreparedbyTechnical Committee ISO/TC23,Tractorsandmachineryforagricultureandforestry Iso8224consists ofthefollowingparts,underthegeneral titleTraveller irrigationmachines: Part1:Laboratoryandfieldtestmethods Part2:Softwallhoseandcouplings--Testmethods ISO1991 permission in writing from the publisher. International Organizationfor Standardization Case Postale 56CH-1211Geneve20·Switzerland Printed in Switzerland ii ISO 8224-2:1991(E) INTERNATIONALSTANDARD Travellerirrigation machines Part 2: Softwall hose and couplings s-Testmethods Iso8033:1985,Rubberandplasticshose-Determi- 1 Scope nationofadhesionbetweencomponents. This part of iso 8224 specifies test methods for AsTMD412-87,Standardtestmethodsforrubber specific physical properties and accelerated dura- bility tests for softwall irrigation hose and couplings propertiesintension. usedwithirrigationmachines AsTMD3389-87,Standardtestmethodforcoated It applies to such hose and couplings used with fabrics abrasion resistance (rotaryplatform,double- stationary hose-coiling,mobile hose-laying or hose- head abrader). coiling,and mobile hose-dragging g irrigation ma- chinesused inagriculture andforestry Definitions Normative references Forthe purposesof this part of Iso8224,the follow- 2 ing definitions apply. The following standards contain provisions which, throughreferenceinthistext,constituteprovisions 3.1 hose: Flexible reinforced tube for conveying ofthispartofiso8224.Atthetimeofpublication, water,roughly round in cross-sectionwhen filled the editions indicated were valid.All standards are with water under normal operation pressure,and subjectto revision,and parties toagreements based whichmaybecollapsiblewhendrainedofwater on this partof IsO 8224 are encouragedto investi- The hose consists of a cover,a hydraulic load- gatethepossibility of applying the most recent edi- bearing textile reinforcement,andaninner tions of the standards indicated below. Members of impermeable tube. IEC and ISO maintain registers of currently valid International Standards. 3.2 elongation: Increase in the hose length caused by pressurization. Iso1402:1984,Rubberandplasticshosesandhose assemblies-Hydrostatic testing. 3.3 snaking:Deviation in location of the hose from Iso1421:1977,Fabricscoatedwithrubberorplastics the original straight-line position, as laid down by -Determinationofbreakingstrengthandelongation the machine, caused by elongation. at break. 3.4 kinking:Vertical transverse folding from the ISO4671:1984,Rubberandplasticshoseandhose normally round configuration of a pressurized hose. assemblies Methodsofmeasurementofdimen- sions. 3.5 pressure: Internalpressure measured in kilopascals (kPa) at the inlet end of the hose or as Iso7326:1984,Rubberandplasticshoses-Assess- ment ofozoneresistance under static conditions. otherwise designated. 1