AS

3499:2022

Australian

STANDARD

Watersupply—Flexiblehoseassemblies

AS3499:2022ii

Preface

ThisStandardwaspreparedbytheAustralianmembersofJointStandardsAustralia/StandardsNewZealandCommitteeWS-001,WaterFittings,tosupersedeAS/NZS3499:2006.

Afterconsultationwithstakeholdersinbothcountries,StandardsAustraliaandStandardsNewZealanddecidedtodevelopthisdocumentasanAustralianStandardratherthananAustralian/NewZealandStandard.

Theobjectiveofthisdocumentistospecifyrequirementsforflexiblehoseassembliesforusewithbothheatedwaterandcoldwatersupplieswithamaximumheatedwatertemperatureof90℃usedforapplicationsabovegroundandaccessible.NominalsizesrangeuptoDN50,amaximumlengthof10mandwithanallowableoperatingpressureof1400kPaforsizesuptoandincludingDN25andprogressivelylowerpressuresforincreasinglylargerdiameters.

PerformancetestsarebasedinpartonEN13618.

ThemajorchangeinthiseditioninvolvestheadditionofnewClauses6.11,6.12and6.13,whichspecifyrequirementsforresistancetocorrosion,resistancetoultravioletdegradationandconformancetoproductspecification,alongwiththeirrespectivemethodsoftestinClausesB.10,B.11andB.12.Thenewperformancerequirement,Clause6.11,providesforhigherlevelsofcorrosionresistanceforhosesintendedtobesubmerged.

PerformancetestsequencingandsamplenumberingisdisplayedinTablesA.1andA.2.

Theterm“normative”isusedinStandardstodefinetheapplicationoftheappendixtowhichitapplies.A"normative"appendixisanintegralpartofaStandard.

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Contents

Preface ii

Section1Scopeandgenera 1

1.1Scope 1

1.2Normativereferences 1

1.3Termsanddefinitions 2

1.4Productconformity 3

Section2Designation 4

2.1Genera 4

2.2Sizes 4

2.2.1Tube 4

2.2.2Endconnectors 4

2.2.3Hoseassembly 4

Section3Materials

5

3.1Genera 5

3.1.1Corrosionresistance 5

3.1.2Contaminationofwater 5

3.2Plasticandelastomericmaterial 5

3.2.1Genera 5

3.2.2Cross-linkedpolyethylene 5

3.2.3Acetal 5

3.3Metallicmaterials 5

3.3.1Copper 5

3.3.2Copperalloy 6

3.3.3Stainlessste 6

3.4SealsforendconnectionsandOrings 6

Section4Design 7

4.1Endconnectors 7

4.1.1Genera 7

4.1.2Threads 7

4.1.3Threadengagement 7

4.2Workingconditions 7

4.2.1Operatingtemperature 7

4.2.2Operatingpressure 7

4.3Classification 7

4.4Marking 8

Section5Productdocumentation 10

5.1Genera 10

5.2Installationinstructions 10

Section6Performancerequirements 1

6.1Genera 1

6.2Watertightnesstes 1

6.3Acceleratedageingbyheattreatmenttes 11

6.4Tensilestressresistancetes 1

6.5Hydraulicpulsationdurabilitytest 11

6.6Thermalcyclingtes 11

6.7Burstpressuretes 11

6.8Bendingtest 11

6.9Contaminationofwater 12

6.10Elastomericmaterials(tube)—Compressionse 12

6.11Resistancetocorrosion 12

6.12Resistancetoultravioletdegradation 12

6.13Conformancetospecification 12

AS3499:2022iv

AppendixA(normative)Evaluationofproductconformitywiththisdocumen 13

AppendixB(normative)Testsonflexiblehoseassemblies 19

Bibliography 39

1AS3499:2022

AustralianStandard?

Watersupply—Flexiblehoseassemblies

Section1Scopeandgeneral

1.1Scope

Thisdocumentspecifiesrequirementsforflexiblehoseassembliesforusewithwaterupto70℃andhightemperaturewaterat70℃to90℃andusedforapplicationsnotburiedandaccessible.

NominalsizesrangeuptoDN50(inclusive),amaximumlengthof10mforapplicationswheretheoperatingpressuredoesnotexceed1400kPaforsizesuptoDN25andprogressivelylowerpressuresforlargerdiametersasgiveninTable4.3.

Showerhosesforbathingonlyareexcludedfromthisdocument.

NOTE1CertificationforplumbinganddrainagematerialsandproductsunderthePlumbingCodeofAustralia(PCA)ismandatory.

NOTE2AnnularorconvolutedhoseassembliesarecoveredbyWMTS520.

1.2Normativereferences

Thefollowingdocumentsarereferredtointhetextinsuchawaythatsomeoralloftheircontentconstitutesrequirementsofthisdocument.

NOTEDocumentsreferencedforinformativepurposesarelistedintheBibliography.

AS681.1,Elastometricseals—Materialrequirementsforpipejointsealsusedinwateranddrainageapplications,Part1:Vulcanizedrubber

AS1199.1,Samplingproceduresforinspectionbyattributes,Part1:Samplingschemesindexedbyacceptancequalitylimit(AQL)forlot-by-lotinspection

AS1432,Coppertubesforplumbing,gasfittinganddrainageapplicationsAS1565,Copperandcopperalloys—Ingotsandcastings

AS1572,Copperandcopperalloys—SeamlesstubesforengineeringpurposesAS1646,Elastomericsealsforwaterworkspurposes

AS1683.13,Methodsoftestforelastomers,Method13:Compressionsetofvulcanizedrubberunderconstantdeflection

AS1722.2,PipethreadsofWhitworthform,Part2:FasteningpipethreadsAS2345,Dezincificationresistanceofcopperalloys

AS2738,Copperandcopperalloys—Compositionsanddesignationsofrefineryproducts,wroughtproducts,ingotsandcastings

AS3688,Watersupplyandgassystems—Metallicfittingsandendconnectors

ASISO7.1,Pipethreadswherepressure-tightjointsaremadeonthethreads,Part1:Dimensions,tolerancesanddesignation

AS/NZS1567,Copperandcopperalloys—Wroughtrods,barsandsections

AS/NZS1568,Copperandcopperalloys—ForgingstockandforgingsAS/NZS3500(allparts),Plumbinganddrainage

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AS/NZS3662,Performanceofshowersforbathing

AS/NZS3707,MethodfortestingpressurecyclingresistanceofpipesandfittingsAS/NZS4020,Testingofproductsforuseincontactwithdrinkingwater

ISO815-1,Rubber;vulcanizedorthermoplastic—Determinationofcompressionset—Part1:Atambientorelevatedtemperatures

ISO6957,Copperalloys—Ammoniatestforstresscorrosionresistance

ASTMA269/A269M,StandardSpecificationforSeamlessandWeldedAusteniticStainlessSteelTubingforGeneralService

ASTMA276/A276M,StandardSpecificationforStainlessSteelBarsandShapes

ASTMA478,StandardSpecificationforChromium-NickelStainlessSteelWeavingandKnittingWireCEN/TS13388,Copperandcopperalloys—Compendiumofcompositionsandproducts

EN1982,Copperandcopperalloys—Ingotsandcastings

1.3Termsanddefinitions

Forthepurposesofthisdocument,thetermsanddefinitionsgiveninAS/NZS3500.0andthosebelowapply.

1.3.1

batchreleasetest

testperformedbythemanufactureronaproductionbatchofcomponents,whichhastobesatisfactorilycompletedbeforethebatchcanbereleased

1.3.2

endconnectors

fittingsforhoseassembliestoconnectwaterservicestoappliancesandbepermanentlyattached(non-reusable)

1.3.3

flexiblehoseassembly

hoseassemblycomprisingatubeandpermanentlyattachedendconnectorsintendedforusebetweenapipeworksystemandafixture,fitting,valve,tap,applianceorsimilar,thatiscapableofbeingeasilyadaptedorbentinanydirectionwithoutdamage

Note1toentry:Theflexiblehoseassemblymayconsistofaninnerlinerandanouterreinforcementbraidorsleevewithsecuredendconnectorstoensurewatertightness.

Note2toentry:Semi-flexiblemetallichoseassembliesarecoveredbyWMTS520.

1.3.4

length

effectivelength

lengthofconnectormeasuredfromsealingfacetosealingface,orforhoseswithelbowendfittings,measuredfromthecentreoftheendfitting

1.3.5

may

indicatestheexistenceofanoption

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1.3.6

nominalsize

DN

numericaldesignationofsize,whichinthecaseofflexibleconnectorswithinthisdocumentistheroundedmeasurementoftheinsidediameteroftheflexiblehose

1.3.7

productionbatch

clearlyidentifiablecollectionofunits,manufacturedconsecutivelyorcontinuouslyunderthesameconditions,usingmaterialorcompoundtothesamespecification

1.3.8

sample(batchortype)

oneormoreunitsofproductdrawnfromabatch,selectedatrandomwithoutregardtoquality

Note1toentry:ThenumberofunitsofproductinthesampleisthesamplesizeasdescribedinTablesA.1andA.2.

1.3.9

shall

indicatesthatastatementismandatory

1.3.10

should

indicatesarecommendation

1.3.11

tube

internalhoseincontactwiththefluidbeingmadefromelastomericorthermoplasticmaterial

1.3.12

typetesting

testingperformedtodemonstratethatthematerial,component,jointorassemblyiscapableofconformingtotherequirementsgiveninthisdocument

1.4Productconformity

ProductconformitytothisdocumentshallbeinaccordancewithAppendixA.

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Section2Designation

2.1General

Hoseandhoseassembliesshallbeclassifiedaccordingtointendedapplication,maximumworkingpressure,workingtemperaturerangeandsuitabilityforsubmersionasgiveninTable4.3.

2.2Sizes

2.2.1Tube

Thesize,bywhichaflexiblehoseisdesignated,shallberelatedtothenominalsizeofitsinternaldiameter.

2.2.2Endconnectors

Thesizeandtypeofendconnectorsassembledtothetubeshallbeincludedintheproductdocumentation.

2.2.3Hoseassembly

ThesizedesignationofthehoseassemblyshallincludethetubeDN,theendconnectortypeandsize,andtheeffectiveoveralllength.

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Section3Materials

3.1General

3.1.1Corrosionresistance

Alltubereinforcement,suchasmetallicbraidingandcrimpfittings,shallbecorrosionresistant.

Forthepurposeofthisdocument,thefollowingmaterialsshallbedeemedtobecorrosionresistant:

(a)PlasticmaterialsasspecifiedinClause3.2.

(b)CopperasspecifiedinClause3.3.1.

(c)CopperalloyasspecifiedinClause3.3.2.

(d)StainlesssteelasspecifiedinClause3.3.3.

3.1.2Contaminationofwater

AllmaterialsincontactwithdrinkingwatershallconformtoAS/NZS4020.

3.2Plasticandelastomericmaterial

3.2.1General

Plasticandelastomericmaterialsusedinhoseassemblies,ortheircomponents,shallmeetalloftheperformancerequirementsofthisdocument.

NOTEConsiderationshouldbegiventothereactionofplasticsandelastomerswithothermaterialsduringnormallifespananduse.Characteristicstobetakenintoaccountshouldincludecompatibilityandresistancetovariationsinwaterqualityandelevatedtemperatures.

3.2.2Cross-linkedpolyethylene

Cross-linkedpolyethylene(PE-X)materialsusedinhoseassemblies,ortheircomponents,shallmeetalloftheperformancerequirementsofthisdocument.

3.2.3Acetal

Acetalplasticsusedforstructuralcomponentsthatareincontactwiththewatersupplyshallbecopolymer.

Thisstatementmayapplytoallotherplastics.

3.3Metallicmaterials

3.3.1Copper

Coppershallconformtothefollowing:

(a)Wroughtproducts—AS2738.

(b)Tubularcomponents—CopperpipeconformingtoAS1432.

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3.3.2Copperalloy

CopperalloyshallconformtoCEN/TS13388orthefollowing:

(a)Castings—AS1565orEN1982andaleadcontentoflessthan4.5%.

(b)Hotpressings—AS/NZS1568.

(c)Rodformachinedparts—AS/NZS1567.

(d)Tubularcomponents—CopperalloypipeconformingtoAS1572alloydesignationC26130.Wherebentorstampedinthefabricationprocess,thepipeshallbesufficientlystress-relievedsothatitiscapableofpassingthestresscorrosiontestspecifiedinISO6957:1988Clause8,usingatestsolutionofpH9.5withoutpriorpickling,afterallfabricationprocessesarecompleted.

NOTEISO6957requiresthattheentirehosecomponentbetestedbeforeanycoatingorplatingoperation.

(e)Copperalloysincontactwithwater—Tobedezincification-resistantinaccordancewithAS2345.

3.3.3Stainlesssteel

Stainlesssteelcompositionshallconformtothefollowing:

(a)StainlesssteelincontactwithwatershallconformtoASTMA276/A276MforwroughtcomponentsorASTMA269/A269Mfortubularcomponents,Grades316,316L,316Ti,UNSS31803(2205)orequivalent.

(b)StainlesssteelnotincontactwithwatershallconformtoASTMA276/A276MforwroughtcomponentsorASTMA269/A269Mfortubularcomponents,Grades304,304L,304LN,316,316L,316Ti,UNSS31803(2205)orequivalent.

(c)StainlesssteelbraidandferrulesshallbeaminimumUNSS30400andS30403andconformtoASTMA478.

3.4SealsforendconnectionsandOrings

SealsforendconnectionsandOringsshallconformtothefollowing:

(a)ElastomericsealsshallconformtoAS1646andAS681.1orarecognizedequivalentstandard.NOTERecognizedequivalentO-ringmaterialstandardsincludeASTM,ENandISO.

(b)Allsealingmaterialsshallconformtotheperformancerequirementsforcompletedhoseassemblies(seeClause6).

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Section4Design

4.1Endconnectors

4.1.1General

Thedesignconfigurationshallbeatthediscretionofthemanufacturersubjecttoconformancetotheperformancerequirementsofthisdocument.Allendconnectorsshallbecapableofmakingawatertightjointwhenconnectedandtightenedinaccordancewiththemanufacturer'sinstructions.

Otherconnections(e.g.flange,camloc)shallconformtotherelevantAustralianorinternationalstandard.Forendfittingsspecifictoacustomer'srequirement,theintendedmatingfittingshallbesuppliedandtestedforconformancetoClause6.2.

4.1.2Threads

ThreadsotherthanwhenintendedtobeusedforaspecificdesignconnectionshallconformtoAS3688.

4.1.3Threadengagement

Thelengthofthreadengagementonassembly,whentorquedtothemanufacturer'srecommendedspecification,shallallowaminimumnumberoffullthreadsinaccordancewithTable4.1.3.Thenumberoffullthreadsshallbecountedwhenthethreadedjointisassembledwithwashersorseals.

Table4.1.3—Threadengagement

Threadnominalsizea

Otherthreads(majordiameter)

mm

Minimumnumberoffullthreadsengaged

≤1"/25mm

>1"/25mm≤2"/50mm>2”/50mm≤3"/80mm

≤35

>35≤60

>60≤90

3

4

5

aPipethreadsshallconformto

ASISO7.1orAS1722.2.

4.2Workingconditions

4.2.1Operatingtemperature

Theworkingtemperatureshallbe—

(a)forwaterapplications,upto70℃(L);and

(b)forwaterapplications,upto90℃(H).

4.2.2Operatingpressure

OperatingpressuresforeachhoseclassificationareincludedinTable4.3.

4.3Classification

Table4.3specifiesflexiblehoseassemblyclassifications.

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Table4.3—Flexiblehoseassemblyclassification

Class

Description

Application

Maximumoperatingpressure

Maximumlength

1

Endoflinehoseswithanopenend

Hoseswhichhaveno

isolationdeviceafterinletNotintendedforuseunderstaticpressure

<250kPa

(dynamic)

10m

2

FlexibleconnectorsuptoandincludingDN20

Connectionsbetweenfixedpoints

1400kPa

(static)

2m

3

Flexibleconnectors>DN20and≤DN50

Connectionsbetweenfixedpoints

25mm=1400kPa

32mm=1350kPa

40mm=940kPa

50mm=850kPa

(static)

10m

4

Endoflinehoses

withshut-offdevices,pressurized

Hosesforwashdown

tapwareorwhichhave

isolationaftertheinletofthehose

1400kPa

(static)

10m<DN252mfor≥DN25

TestrequirementsforClass1hosesshallbeinaccordancewithAS/NZS3662andasprescribedin

TableA.1andatthemaximumtemperatureforwhichthehoseisrated(LorH).

Hosesintendedforsubmersionshallhavethesuffix“S”followingtheclassofhoseinthemarking.Theseflexibleconnectorsmayhaveaprotectiveexternalcoatingorhaveadditionalresistancetocorrosion.

ConnectorsforinstallationsrequiringsubmersioninwaterorinareaswherethereisanelevatedriskofenvironmentalcorrosionshallbesubjectedtotheconditionsspecifiedinClause6.11.

NOTE1Classes2and3maybeusedtoprovideinlineexpansionandmovementcompensation.

NOTE2Class1hosesareintendedforuseforfillingapplications.

4.4Marking

Flexiblehoseassembliesshallbepermanentlyandlegiblymarkedwiththefollowing:

(a)Manufacturer'sname,brandortrademark.

(b)WaterMark.

(c)Licencenumber.

(d)Theratedworkingtemperature(70°℃or90°℃)oftheassembly.InthecaseofhoseslessthanDN10,theletter"L"forflexiblehosesforwaterapplicationsupto70℃or“H”forflexiblehosesforwaterapplicationsupto90℃.

NOTE1Ahoseforwaterapplicationsupto90℃(H)isautomaticallysuitableforwaterapplications<70℃(L).

(e)Referencetothisdocument,i.e.AS3499.

(f)Dateorbatchidentificationforproducttraceability.

(g)Classandsuffixifapplicable.

Manufacturersmakingastatementofconformancetothisdocumentonaproduct,packagingorpromotionalmaterialrelatedtothatproduct,areadvisedtoensurethatsuchconformanceiscapableofbeingverified.

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Class1hosesortheirunitpackagingshallbedurablyandlegiblymarkedwithItems(a),(b),(c),(e),(f)and(g),aswellasanylimitationsontheproduct'sinstallationanduse,e.g.flowrate,maximumsupplypressure,backflowpreventiondevicewhereshowerhosesarefitted.

NOTE2Additionalmarkingrequirementsmayberequiredbycertificationschemes.

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Section5Productdocumentation

5.1General

Ascopeofusestatementoflimitationsandconditionsshallbeincludedwiththeproductwhensold.ThestatementshallbeintheEnglishlanguageandclearlyvisibletothepurchaseranduser:Itmaybestampedontotheproduct,printedonthepackagingorincludedaspartoftheinstallationinstructions.

Whereitisnotpracticaltoincludethisstatement,adviceshallbeincludedthatthestatementisavailablefromthemanufacturer'swebsite.

5.2Installationinstructions

Flexiblehoseassemblyrequiringassemblyand/orfittingaspartoftheinstallationprocessshallbeaccompaniedbyinstallationinstructionsintheEnglishlanguage,includingadescriptionofinstallationrequirementssuchas—

(a)tighteningtorques;

(b)threadsizeandtype;

(c)minimumbendradius;

(d)operatingtemperature;

(e)pressurelimitations;

f)ultravioletdegradationduetoweatheringoranyotherlimitingfactor;

(g)flexiblehoseassembliesshallbeusedonlyinaccessiblelocationsandnotburied;and(h)theAustraliancontactdetailsofthemanufacturerordistributor.

TheinstallationinstructionsshallincludereferencestotherequirementsoftheAS/NZS3500seriesofStandards,includinganylimitationsontheproduct'suse.

Whereitisnotpracticaltoincludetheseinstructions,adviceshallbeincludedthattheinstructionsareavailablefromthemanufacturer'swebsite.

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Section6Performancerequirements

6.1General

AppendixBsetsoutmethodsforthetestingofaflexiblehoseassemblyforwaterapplications.

EachsampleshallbelabelledaccordingtothesamplenumberspecifiedinTableA.1fortypetestingor

TableA.2forbatchtesting.

TestingshallbecarriedoutinthesequenceindicatedinTablesA.1andA.2.

Samples,completewithendconnections,shallpasstheperformancetestsinthisdocument.

6.2Watertightnesstest

WhentestedinaccordancewithClauseB.3,thetubeandfittingsshallshownosignsofcracks,leakageorotherfailure.Thehoseshallnotchangeinlengthordiameterbymorethan8%.

6.3Acceleratedageingbyheattreatmenttest

WhereprescribedinTableA.1,samplesshallbeconditionedbytheacceleratedheat-ageingtestspecifiedinClauseB.4.

6.4Tensilestressresistancetest

Thehoseassemblyshallpasstheminimumtensileforcetest,asstatedinTableB.5.1andasspecifiedinClauseB.5.Duringandafterthistest,thehoseassemblyshallshownocracks,damageorleakage.Atthecompletionofthetest,ifthefittingsareloosenedfromtheirseatinanaxialdirection,thesampleshallbedeemedtohavefailed.

6.5Hydraulicpulsationdurabilitytest

FlexiblehoseassembliesshallbetestedinaccordancewithClauseB.6andAS/NZS3707.Thesampleshallshownosignsofcracks,leakageorotherfailures.

6.6Thermalcyclingtest

Forhightemperature(H)hosesonly,theflexiblehoseassembliesshallbetestedfortheirabilitytowithstandtemperaturevariationsinaccordancewithClauseB.8.Aftertesting,thehoseassembliesshallshownosignsofcracks,leakageorotherfailure.

6.7Burstpressuretest

FlexiblehoseassembliesshallbetestedforconnectionwiththefixedpartofthewatersupplyinaccordancewithClauseB.7.Aftertesting,thehoseassembliesshallshownosignsofcracks,leakageorotherfailure.

6.8Bendingtest

FlexiblehoseassembliesshallbetestedinaccordancewithClauseB.9undertheconditionsspecifiedin

TableB.9.1.Whenmeasured,theovalityshallnotexceed—

(a)uptoDN20,15%oftheoutsidetubediameter;or

(b)DN25toDN50,20%oftheoutsidetubediameter.

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6.9Contaminationofwater

AllmaterialsincontactwithdrinkingwatershallconformtoAS/NZS4020.Flexiblehoseassembliesshallbedeterminedasend-of-linefittingsforAS/NZS4020testingpurposes.

6.10Elastomericmaterials(tube)—Compressionset

ElastomericmaterialsorcomponentsshallbetestedtoAS1683.13orISO815-1at70℃for22h.Thecompressionsetshallnotexceed20%.

6.11Resistancetocorrosion

WhentestedinaccordancewithClauseB.10,hoseassemblies≤DN20shallnotshowanystructuraldefectincludingpittingandfrayedstrandswheninspected.

Endconnectorsshallbestructurallysound.Fitmenttothehoseshallbewatertight.

Hosestestedundersubmersibleconditionsautomaticallyconformtotheconditionsfornon-

submersiblehoses.

NOTECorrosiontestingdeterminestheresistanceofbraidingmaterialstodeteriorationindomesticapplications.Hoseassembliesintheseapplicationsareconsideredasbeinglimitedtothesizesindicated.

6.12Resistancetoultravioletdegradation

Materialsshallberesistanttoultravioletlightdegradation.WhentestedinaccordancewithClauseB.11,theflexiblehoseassembliesshallshownosignsofcracksorotherfailure.

Flexibleconnectorsthataredesignedtobeexposedtodirectsunlight,wheninstalled,shallnotcrack,crazeorexhibitsignsofanydefectwhentestedinaccordancewithClauseB.11.

EPDMandmetallicmaterialsareexemptfromthisrequirement.

6.13Conformancetospecification

WhencomparedwiththedetailsrequiredinClauseA.2,thephysicalmaterialsanddimensionsoftheflexiblehoseassembliesshallmatchthosestatedinClauseA.2.

ClauseB.12setsoutthemethodsandtolerancesforcomparison.

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