ISO 23550-2018 Safety and control devices for gasandor oil burners and appliances —

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1、INTERNATIONALISOSTANDARD23550Thirdedition2018-04Safetyandcontroldevicesforgasand/oroilburnersandappliances—GeneralrequirementsDispositsifdecommandeetdesécuritépourbrûleursàgazetappareilsàgaz—ExigencesgénéralesReferencenumberISO23550:2018(E)©ISO2018ISO23550:2018(

2、E)COPYRIGHTPROTECTEDDOCUMENT©ISO2018Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheint

3、ernetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO’smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401•Ch.deBlandonnet8CH-1214Vernie,rGenevaPhone:+41227490111Fax:+41227490947Email:copyright@iso.o

4、rgWebsite:www.iso.orgPublishedinSwitzerlandi©ISO2018–AllrightsreservedISO23550:2018(E)ContentsPageForeword.....viIntroduction.....vii1Scope.....12Normativereferences....13Termsanddefinitions....24Classification....54.1Classesofcontrol....54.2Groupsofcontrols....

5、54.3TypesofDCsuppliedcontrols...54.4Classesofcontrolfunctions....55Testconditionsandtolerances....65.1Testconditions....65.2Tolerances....66Construction.....76.1General....76.2Constructionrequirements....76.2.1Appearance....76.2.2Holes....76.2.3Breatherholes....

6、86.2.4Ventlimiter....86.2.5Screwedfastenings...96.2.6Movingparts....96.2.7Sealingcaps....96.2.8Disassemblingandassemblingforservicingand/oradjustmentforcontrols.106.2.9Auxiliarychannelsandorifices...106.2.10Pre-settingdevice...106.3Materials....116.3.1Generalmat

7、erialrequirements...116.3.2Housing....116.3.3Springsprovidingclosingforceandsealingforce..126.3.4Resistancetocorrosionandsurfaceprotection..126.3.5Impregnation....126.3.6Sealsforglandsformovingparts...136.3.7Jointing....136.4Connections....136.4.1General....136.

8、4.2Connectionsizes....136.4.3Connectiontypes....146.4.4Threads....156.4.5Unionjoints....166.4.6Flanges....166.4.7Compressionfittings....166.4.8Flareconnections....176