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【英文标准名称】:SpecificationforSpecialEngineeredFittings,AppurtenancesorValvesforUseinPoly(VinylChloride)(PVC)orChlorinatedPoly(VinylChloride)(CPVC)Systems
【原文标准名称】:聚氯乙烯(PVC)或氯化聚氯乙烯(CPVC)系统专用工程配件、附件或阀门的规范
【标准号】:ANSI/ASTMF1970-2005
【标准状态】:作废
【国别】:美国
【发布日期】:2005-08-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:聚氯乙烯;饮用水设备;材料试验;配件;公用事业设备
【英文主题词】:Checkvalves;CPVC;Drinkingwaterinstallations;Elastomers;Fittings;Flanges;Materialstesting;Polyvinylchloride;Unions;Utilityequipment;Valves
【摘要】:Thisspecificationcoversfittings,appurtenancesandvalveswhicharetobeusedwithpipeandtubingcomplyingwithSpecificationsD1785,D2241,D2846,F441orF442,orotherpipingasspecifiedbythefittingsmanufacturer.Theseproducts,suchasunions,flangesorvalves,arenotincludedinthescopeofexistingASTMspecifications.Thisspecificationincludesminimumrequirementsfortesting,materials,dimensions,workmanship,marking,andin-plantqualitycontrol.Fittingsorappurtenancescoveredbythisspecificationaregenerallyeithermolded,fabricated,orassembledfrommoldedormachinedcomponents.Thematerialsusedincomponentsincluderigidthermoplastics,thermoplasticelastomers,elastomerics,andmetals.Thebodyormainportionofthefitting,appurtenanceorvalveistypicallyPVC,CPVC,PEorPA(nylon).AllproductscoveredbythisstandardareintendedtobeusedinPVCorCPVCplasticpipingsystems,orasatransitionfromthesetometalsystems.Theapplicationoftheseproductstogasserviceisbeyondthescopeofthisspecification.Theproductscoveredbythisspecificationareintendedforusewiththedistributionofpressurizedliquidsonly,whicharechemicallycompatiblewiththepipingmaterials.Duetoinherenthazardsassociatedwithtestingcomponentsandsystemswithcompressedairorothercompressedgasessomemanufacturersdonotallowpneumatictestingoftheirproducts.Consultwithspecificproduct/componentmanufacturersfortheirspecifictestingprocedurespriortopneumatictesting.Note1-Warning:Pressurized(compressed)airorothercompressedgasescontainlargeamountsofstoredenergywhichpresentserioussafetywhichpresentserioussafetyhazardsshouldasystemfailforanyreason.Fittingswhichrelyonheatfusionweldingforconnectiontothepipingsystemareoutsidethescopeofthisspecification.Checkvalves(includingfootvalves)coveredbythisspecificationshallnotbeconsideredbackflowpreventiondevicesandshallnotbeusedfortheprotectionofapotablewatersupply.Fordefinitionsandrequirementsofbackflowpreventiondevices,consultmodelplumbingcodesandASSE.Duetothecomplexandinstallation-specificconcernssurroundingchemicalresistanceandcorrosion,thisspecificationdoesnotaddressthecompatibilityoftheproductswithallpossibleend-useenvironments.Additionaltestingspecifictotheend-useenvironmentisrecommendedifthesystemisconveyingliquidsotherthanpotablewater.Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIunitsgiveninparenthesesaregivenforinformationonly.Thefollowingsafetycaveatappliesonlytothetestmethodsandin-plantqualitycontrolportions,sectionofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G33
【国际标准分类号】:23_040_45
【页数】:
【正文语种】:英语