1、BRITISH STANDARD BS EN 246:2003 Sanitary tapware General specifications for flow rate regulators The European Standard EN 246:2003 has the status of a British Standard ICS 91.140.70 BS EN 246:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee
2、 on 3 September 2003 BSI 3 September 2003 ISBN 0 580 42567 3 National foreword This British Standard is the official English language version of EN 246:2003. It supersedes BS EN 246:1992 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee B/504, Water sup
3、ply, to Subcommittee B/504/8, Terminal fittings, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this do
4、cument may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contrac
5、t. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for
6、change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 17 and a back cover. The BSI copyright notice displayed in t
7、his document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN246 August2003 ICS91.140.70 SupersedesEN246:1989 Englishversion SanitarytapwareGeneralspecificationsforflowrateregulators Robinetteries
8、anitaireSpcificationsgnralesdes rgulateursdejets SanitrarmaturenAllgemeineAnforderungenan Strahlregler ThisEuropeanStandardwasapprovedbyCENon16July2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstanda
9、rdwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibili
10、tyofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,S
11、pain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN246:2003EEN246:
12、2003(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Designation.5 5 MarkingIdentification .5 6 Materials5 6.1 Chemicalandhygieniccharacteristics . 5 6.2 Exposedsurfaceconditionandqualityofcoating .5 7 Dimensions.5 7.1 Flowrateregulatorswithinternalthread .
13、 .6 7.2 Flowrateregulatorswithexternalthread . 7 7.3 Balljointflowrateregulators . 7 8 Hydrauliccharacteristics . .9 8.1 General9 8.2 Flowrate . 9 8.3 Evaluationofthejetformation . 12 9 Mechanicalperformanceofflowrateregulatorsunderhightemperature 12 9.1 General12 9.2 Testmethod. .13 10 Mechanicalpe
14、rformanceofflowrateregulatorswithplastichousing13 10.1 General13 10.2 Testmethod 13 11 Acousticcharacteristics . 14 11.1 General14 11.2 Procedure .14 11.3 Requirements .14 AnnexA (normative) Dimensionsforthemountingofflowrateregulatorsonnozzleoutletsoftapware .15 Bibliography 17EN246:2003(E) 3 Forew
15、ord Thisdocument(EN246:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC164,“Watersupply“,the secretariatofwhichisheldbyAFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyFebruary2004,andconflictingnationalstandardsshall
16、bewithdrawnatthelatest byFeburary2004. ThisdocumentsupersedesEN246:1989. Inrespecttopotentialadverseeffectsonthequalityofwaterintendedforhumanconsumption,causedbythe productcoveredbythisstandard,itshouldbenotedthat,whileawaitingtheadoptionofverifiableEuropean criteria,existingnationalregulationsconc
17、erningtheuseand/orthecharacteristicsofthisproductremaininforce. AnnexAisnormative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungar
18、y,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN246:2003(E) 4 1Scope ThisEuropeanStandardspecifies: thedimensional,mechanical,hydraulicandacousticcharacteristicswithwhichflowrateregulatorsshould comply; the procedure s fort
19、estingthesecharacteristics. ThisEuropeanStandardisapplicableto: flowrateregulatorsintendedtobemountedontapwareusedwithsanitaryappliancesintoilets,washrooms andkitchens(singletaps,combinationtapassemblies,mechanicalmixingvalves,thermostaticmixingvalves); flowrateregulatorsusedunderthefollowingpressur
20、eandtemperatureconditions: Table1Conditionsfortheuseofflowrateregulators Limitsofuse Recommendedlimitsforcorrect operation DynamicPressure 0,05 MPa P 0,5 MPa (0,5 bar P 5 bar) 0,1 MPa P 0,5 MPa (1 bar P 5 bar) Temperature 70 C 65 C Flowrateregulatorscanonlybeconnecteddownstreamoftheobturatorofthetap
21、. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytot
22、hisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN248, SanitarytapwareGeneralspecificationsforelectrodepositedcoatingsofNiCr . ENISO38221, AcousticsLaboratorytestsonnoiseemissionfromapplian
23、cesandequipmentusedinwater supplyinstallationsPart1:Methodofmeasurement(ISO38221:1999) . ENISO38224, AcousticsLaboratorytestsonnoiseemissionfromappliancesandequipmentusedinwater supplyinstallationsPart4:Mountingandoperatingconditionsforspecialappliances(ISO38224:1997) . ISO49, Malleablecastironfitti
24、ngsthreadedtoISO71 . 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply: flowrateregulator Adevicewhichisfittedonthenozzleoutletofataptoenableitsjettoberegulated Adistinctionismadebetween: flowrateregulatorswithoutairintake,whenoperatingwithoutaerationoft
25、hewater; flowrateregulatorswithairintake,whenaerationofthewateroccurs; balljointflowrateregulators,whenaflowrateregulatorwithorwithoutaerationisfittedintoaballjoint.EN246:2003(E) 5 4Designation Aflowrateregulatorisdesignatedby: itstype;(with/withoutairintake) its dimension ( Q); itsacousticgroup(I)a
26、ndflowrateclass(A); referencetothisstandard. Exampleofdesignation: Flowrateregulatorwithoutairintake,withinternalthread:M22x1;I;AEN246(cf.Figure1andTable2) Flowrateregulatorwithoutairintake,withexternalthread:M28x1;I;AEN246(cf.Figure2andTable1) 5 MarkingIdentification Flowrateregulatorscomplyingwith
27、thisstandardshallbemarkedpermanentlyandvisibleontheirouterfacewith: themarkornameofthemanufacturer; theacousticgroupandtheflowrateclass. Theflowrateclassshallbemarkedontheouterfaceoftheskirtofthegrillecage,ifitisaninterchangeabletype detachablechanger Inordertodistinguishflowrateregulatorswithairint
28、akefromflowrateregulatorswithoutairintaketheyshallalso bemarkedwithanXontheexteriorsurface. Balljointflowrateregulatorshallbemarkedbothontheballjointdeviceandontheflowrateregulator. 6Materials 6.1 Chemicalandhygieniccharacteristics Allmaterialscomingintocontactwithwaterintendedforhumanconsumptionsha
29、llpresentnohealthriskupto atemperatureof90C.Theyshallnotcauseanydeteriorationinwaterintendedforhumanconsumption,with regardtofoodquality,appearance,odourortaste. Withintherecommendedlimitsgiveninclause1forcorrectoperation,thematerialsshallnotbesubjecttoany deteriorationwhichmightaffecttheoperationof
30、theflowrateregulator.Pressurizedpartsshallwithstandthelimits ofusespecifiedinTable1.Materialswithinadequatecorrosionresistanceshallbegivenadditionalprotection. 6.2 Exposedsurfaceconditionandqualityofcoating VisiblechromiumplatedsurfaceandNiCrcoatingsshallcomplywiththerequirementsofEN248. 7Dimensions
31、 NOTE ForvalueswithoutspecifiedtolerancesthetolerancesofEN227681areapplicable.EN246:2003(E) 6 7.1 Flowrateregulatorswithinternalthread Figure1Flowrateregulatorswithinternalthread Table2Dimensionsforflowrateregulatorwithinternalthread Symbol Values(mm) M M22x16 H X 14to17 T 3,5to4,3 Ym i n 4 , 5 Jm i
32、 n 2EN246:2003(E) 7 7.2 Flowrateregulatorswithexternalthread Figure2Flowrateregulatorswithexternalthread Table3Dimensionsforflowrateregulatorswithexternalthread Symbol Values(mm) Q M24x16gM 28x16 g X 14to17 15to19 T 4,5 0,1 7 0,1 R Min.9 Min.14 U 1+0,5/0 1+0,5/0 L 240/0,2 280/0,2 V0 , 80 , 8 J Min.2
33、 Min.2,5 7.3 Balljointflowrateregulators Theconnectionsballjointtotapwareandballjointtoflowrateregulatorshalleachcomplywiththerequirementsof eitherTable2orTable3. Therearetwotypesofballjointflowrateregulators:EN246:2003(E) 8 Type1 Type2 Dimensionsinmm Key 1Balljoint 2Flowrateregulators Figure3Flowra
34、teregulatorwithballjoint Figure4Balljointintegralwithtapwarenozzle Type1 Balljointandflowrateregulatorformacompleteunit(Figure3).Theconnectionbetweenballjointand nozzleoutletshallmeettherequirementsofTable2(internalthread)orTable3(externalthread). Type2 Theballjointisindependentoftheflowrateregulato
35、r(Figure4).Inthiscase: 1) theflowrateregulatordimensionsfortheconnectionwithballjointshallmeettherequirementsof Table2(internalthread)orTable3(externalthread). 2) theballjointdimensionsfortheconnectionwithflowrateregulatorshallmeettherequirementsof TableA.1forflowrateregulatorswithM22x1internalthrea
36、dorTableA.2forflowrateregulatorswith M24x1orM28x1externalthread(annexA). 1 2EN246:2003(E) 9 8 Hydrauliccharacteristics 8.1General Thetestsdescribedaretypetests(laboratorytests)andnotqualitycontroltestscarriedoutduringmanufacture. Thisclausespecifiesatestmethod,theaimofwhichistodeterminethefollowingc
37、haracteristicsatequaland constantpressure: flowrate(see8.2); evaluationofthejetformation(see8.3). 8.2 Flowrate 8.2.1 Testmethod 8.2.1.1Assembly TheflowrateregulatortobetestedshallbeconnectedtoatestcircuitasshowninFigure5. Key: 1 Galvanizedunion,taperseat1,U11,inaccordancewithISO49 2 Galvanizedmalelo
38、ngsweepbend1,G8,inaccordancewithISO49 3 Galvanizedsocket,1x3/4,M2,inaccordancewithISO49 4 AdapterinaccordancewithISO38224(seeFigure6and7) Figure5TestcircuitEN246:2003(E) 10 Adaptersshallbeofthefollowingtypes: a) Adapterwithexternalthread(A 3 )forcontrollingM22X1flowrateregulators. Figure6AdapterA 3
39、Table4DimensionsofA 3 adapters Dimensionsinmm Designation d 1 d 2 I 1 I 2 I 3 SW AdapterENISO38224A 3 M22x1 M22x16g 17 24 5 1,7 27EN246:2003(E) 11 b) Adapterwithinternalthread(A 4 )forcontrollingM24X1andM28X1flowrateregulators. SW Figure7AdapterA 4 Table5DimensionsofA 4 adapters Dimensionsinmm Desig
40、nation d 1 d 2 d 3 I 1 I 2 I 3 SW AdapterENISO38224A 4 M24x1 M24x16H 24,5 17 25 6 1,7 27 AdapterENISO38224A 4 M28x1 M28x16H 28,5 17 26 8 1,7 30 8.2.1.2 Testmethod Connecttheflowrateregulatortotheadapter4showninFigure5. Openthewatersupplycircuitandadjusttotherequireddynamicpressure. Measuretheflowrat
41、ewhenastableandcontinuousflowisestablished.EN246:2003(E) 12 8.2.2Requirements Flowrateregulatorsareclassedaccordingtotheirnominalflowrateatadynamicpressureof0,3MPa(3bar),with thefollowingtolerances: Table6Flowrateofflowrateregulators Flowrate,in(l/s) Class Nominalvalue Tolerances Z0 , 1 5 0,125 Q 0,
42、15 A0 , 2 5 0,225 Q 0,25 S0 , 3 3 0,30 Q 0,33 B0 , 4 2 0,38 Q 0,42 C0 , 5 0 0,45 Q 0,50 D0 , 6 3 0,58 Q 0,63 Themanufacturerisresponsibleforselectingtheclass. NOTE Flowrateregulatorswithflowrateslyingoutsidetheclassesspecifieddonotcomplywiththisstandardand thereforecannotbeclassified. 8.3 Evaluation
43、ofthejetformation 8.3.1 Assemblyasspecifiedin8.2.1.1 8.3.2 Testmethodtestasspecifiedin8.2.1.2 8.3.3 Requirementforflowrateregulatorswithoutaeration Thejetshallbealongtheaxisoftheflowrateregulatorsoutletandshallflowcontinuouslyoveralengthof150mm atthenominalflowrateforeachclass;itshallbeneitherflattenednorconstricted,norscatteredtosuchanextent thatsplashing
