SAE ARP4741 Aerospace-Hydraulic Switching Valve, Pressure or Pilot Operated
时间:2024-05-25 03:26:08 来源: 标准资料网 作者：标准资料网 阅读：8665
Product Code:SAE ARP4741
Title:Aerospace-Hydraulic Switching Valve, Pressure or Pilot Operated
Issuing Committee:A-6c5 Components Committee
Scope:This SAE Aerospace Recommended Practice (ARP) establishes the requirements for the design, manufacture, and qualification of four hydraulic switching valves used in airborne applications. Two are pressure operated, Type IA and IB and two are solenoid/pilot operated, Type IIA and IIB. They are applicable to four pressure classes 3000, 4000, 5000 and 8000 psi. The equipment as designed is intended to be installed in hydraulic systems designed to AS5440 for military applications or ARP4752 and ARP4925 depending on the type of aircraft for commercial applications. Additional or refined requirements shall be contained in the detail (procurement) specification and these shall take precedence over any potentially conflicting requirements of this ARP or documents referenced by this ARP.
【英文标准名称】:StandardTestMethodforDeterminingImpuritiesinHigh-PurityEthylbenzenebyGasChromatography
【原文标准名称】:气相色谱法测定高纯度乙苯中杂质的标准试验方法
【标准号】:ASTMD5060-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D16.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:含量测定;乙苯;气相色谱法;杂质;试验方法
【英文主题词】:ethylbenzene;ethylbenzenepurity;impuritiesinethylbenzene
【摘要】:Thetestissuitableforsettingspecificationsonethylbenzeneandforuseasaninternalqualitycontroltoolwhereethylbenzeneisusedinmanufacturingprocesses.Itmaybeusedindevelopmentorresearchworkinvolvingethylbenzene.Purityiscommonlyreportedbysubtractingthedeterminedexpectedimpuritiesfrom100%.Absolutepuritycannotbedeterminedifunknownimpuritiesarepresent.1.1Thistestmethoddescribestheanalysisofnormallyoccurringimpuritiesin,andthepurityof,ethylbenzenebygaschromatography.Impuritiesdeterminedincludenonaromatichydrocarbons,benzene,toluene,xylenes,cumene,anddiethylbenzeneisomers.1.2Thistestmethodisapplicableforimpuritiesatconcentrationsfrom0.001to1.000%andforethylbenzenepuritiesof99%orhigher.Atthislevel,p-xylenemaynotbedetected.1.3Indeterminingtheperformanceofthetestresultsusingthismethodtoapplicablespecifications,resultsshallberoundedoffinaccordancewiththerounding-offmethodofPracticeE29.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,seeSection8.
【中国标准分类号】:G16
【国际标准分类号】:71_080_15
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:StandardPracticeforPreparationofSamplesforIdentificationofWaterborneOils
【原文标准名称】:水中油鉴别用样品制备的标准实施规程
【标准号】:ASTMD3326-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D19.06
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:鉴别;油;制备;工艺;抽样方法;试样;水
【英文主题词】:identification;oilspill;preparation;sample;waterborneoil
【摘要】:Identificationofarecoveredoilisdeterminedbycomparisonwithknownoilsselectedbecauseoftheirpossiblerelationshiptotheparticularrecoveredoil,forexample,suspectedorquestionedsources.Thus,samplesofsuchknownoilsmustbecollectedandsubmittedalongwiththeunknownforanalysis.Itisunlikelythatidentificationofthesourcesofanunknownoilbyitselfcanbemadewithoutdirectmatching,thatis,solelywithalibraryofanalyses.1.1Thispracticecoversthepreparationforanalysisofwaterborneoilsrecoveredfromwater.Theidentificationisbaseduponthecomparisonofphysicalandchemicalcharacteristicsofthewaterborneoilswithoilsfromsuspectsources.Theseoilsmaybeofpetroleumorvegetable/animalorigin,orboth.Sevenproceduresaregivenasfollows:1.2ProceduresfortheanalyticalexaminationofthewaterborneoilsamplesaredescribedinPracticeD3415,D3328,D3414,andD3650.Refertotheindividualoilidentificationtestmethodsforthesamplepreparationmethodofchoice.Thedeasphaltingeffectsofthesamplepreparationmethodshouldbeconsideredinselectingthebestmethods.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificcautionstatementsaregiveninSections6and32.
【中国标准分类号】:E04;Z12
【国际标准分类号】:75_080
【页数】:8P.;A4
【正文语种】: