ISO 5175-1-2017 Gas welding equipment - Safety devices Part 1 Devices incorporat

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1、INTERNATIONALISOSTANDARD5175-1Secondedition2017-09Gasweldingequipment—Safetydevices—Part1:Devicesincorporatingaflame(flashback)arrestorMatérieldesoudageaugaz—Dispositsifdesécurité—Partie1:Disposits ifavec arêtdeflammeReferencenumberISO5175-1:2017(E)©ISO2017ISO5175-1:2

2、017(E)COPYRIGHTPROTECTEDDOCUMENT©ISO2017,PublishedinSwitzerlandAllrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,wit

3、houtpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO’smemberbodyinthecountryoftherequester.ISOcopyrightofficeCh.deBlandonnet8•CP401CH-1214Vernier,Geneva,SwitzerlandTel.+41227490111Fax+41227490947copyright@iso.orgwww.iso.orgi©ISO2017–A

4、llrightsreservedISO5175-1:2017(E)ContentsPageForeword.....iv1Scope.....12Normativereferences....13Termsanddefinitions....14Designandmaterials....44.1Connection....44.2Materials....45Requirements....45.1General....45.2Gastightness....55.3Pressureresistance....65.4Flame

5、arrestor....65.5Flamearrestorwithnon-returnvalve...65.6Flamearrestorwithtemperature-sensitivecut-ofvalve..65.7Flamearrestorwithpressure-sensitivecut-ofvalve..65.8Othermultifunctionalsafetydevices...66Methodsfortypetesting....66.1General....66.2Accuracyofpressureandflo

6、wmeasurements...76.3Testgases....76.4Gastightnesstest....76.5Pressureresistancetest....76.6Non-returnvalvetest....76.7Flamearrestortest....86.8Temperature-sensitivecut-ofvalvetest...96.9Pressure-sensitivecut-ofvalvetest...106.10Internalleakagetestforcut-ofvalves...107

7、Furthertests....108Manufacturer’sinstructions....109Marking.....11AnnexA(informative)Gasflowmeasurement...12AnnexB(informative)Thirdpartytestinginformation...14AnnexC(informative)Productiontests....15©ISO2017–AlrightsreservediISO5175-1:2017(E)ForewordISO(theInternatio

8、nalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInterna