作者:标准资料网 时间:2024-05-13 18:08:16   浏览:8990   来源:标准资料网

【英文标准名称】:Electricallyoperatedvalves
【原文标准名称】:电动控制阀
【标准号】:UL429-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999-03-23
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:衬垫;电传动系统;流体;阀门;安全阀;水;油;制冷剂;蒸汽
【英文主题词】:Electricaltransmissionsystems;Fluids;Gaskets;Oils;Refrigerants;Safetyvalves;Steam;Valves;Water
【摘要】:Theserequirementscoverelectricallyoperatedgeneralpurposeandsafetyvalvesrated600voltsorlessandintendedforthecontroloffluids,suchasair,gases,oils,refrigerants,steam,water,andthelike.Electricallyoperatedvalves,otherthanautomotivefuelvalves,coveredbytheserequirementsareintendedtobeusedinotherthanhazardouslocationsasdefinedbytheNationalElectricalCode,NFPA70.Theserequirementsalsocoverelectricallyoperatedvalvesintendedtobefactoryinstalledonorincertainappliancesasoperatingorsafetycontrols.TheserequirementsdonotcovergeneralpurposevalvesthatarenotintendedtobeusedwithaflammableorhazardousfluidandareintendedonlyforconnectiontoalowvoltagecircuitoflimitedpowersuppliedbyaprimarybatteryoraseparateexternalClass2transformer.However,ifahigh-voltagetransformerwithalow-voltagesecondaryisincorporatedasanintegralpartofavalve,theassemblyiscoveredbytheserequirements.Theserequirementsdonotcovervalvesforuseinhydraulicfluidpowersystems.TheserequirementsdonotcovervalvescoveredbytherequirementsintheStandardforAutomaticValvesforGasAppliances,IAS/AGAZ21.21.
【中国标准分类号】:J16
【国际标准分类号】:23_060_10
【页数】:72P.;A4
【正文语种】:英语