【英文标准名称】:StandardSpecificationforExcessFlowValvesforNaturalGasService
【原文标准名称】:天然气设备用溢流阀标准规范
【标准号】:ASTMF2138-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F17.60
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:excessflowvalve;(EFV);Excessflowvalve(EFV);Naturalgasservicesystems--specifications;Performance--plastics;Thermoplasticpipe/tube/fittings--specifications
【摘要】:1.1Thisspecificationcoversrequirementsandtestmethodsforexcessflowvalvesforuseinthermoplasticnaturalgaspipingsystems.However,itisexpectedthatexcessflowvalvesmanufacturedtotherequirementsofthisspecificationmayalsobeusedinothernaturalgaspipingsystems.1.2Excessflowvalvescoveredbythisspecificationaredesignedforinsertionintocomponentsfornaturalgassystemssuchaspipe,tubing,orfittingsinsizesfrom1/2CTSto2IPS.1.3Thetestsrequiredbythisspecificationareintendedtodeterminetheperformancecharacteristicsofanexcessflowvalveinstalledinastraightpieceofpipe.Anexcessflowvalvecouldpossiblybeinstalledinastraightpieceofpipe,inaserviceteeoutlet,aspartofamechanicalcoupling,orinotherconfigurations.Theperformancecharacteristicsoftheexcessflowvalvemaybesignificantlydifferentforeachinstalledconfiguration.UsersshouldconducttheirownteststodeterminetheinstalledperformancecharacteristicsorcontacttheEFVmanufacturerfortestdatafortheinstalledconfiguration.AdditionalguidanceonselectionandinstallationofexcessflowvalvesisincludedinAppendixX1.1.4Thetestsrequiredbythisspecificationarenotintendedtoberoutinequalitycontroltests.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.
【中国标准分类号】:J16
【国际标准分类号】:75_200
【页数】:5P.;A4
【正文语种】:英语