【英文标准名称】:Pipe-AppliedAtmospheric-TypeVacuumBreakers
【原文标准名称】:应用管道的大气式真空制动器
【标准号】:ANSI/ASSE1001-2001
【标准状态】:作废
【国别】:美国
【发布日期】:2001
【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】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aircontroldevices;Airquality;Atmospheric;Atmosphericpollutants;Drinkingwatercontrol;Pipes
【摘要】:Appliestodevicesclassifiedasatmospherictypevacuumbreakersthataresinglepipe-applied(doesnotapplytotankballcocksorsimilardevicesthatdependonfloatoperatedvalvestocontrolflow).Thepurposeofthesedevicesistoprovideprotectionofthepotablewatersupplyagainstpollutantsorcontaminantsthatenterthesystemduetobacksiphonagethroughtheoutlet.Underbacksiphonageconditions,asmallamountofwaterispermittedtoexitthroughtheairports.Thedeviceshall:1)Beinstalleddownstreamofthelastcontrolvalve;2)Notbesubjectedtobackpressure3)Notbesubjectedtomorethantwelve(12)hoursofcontinuouswaterpressure;and4)Beinstalledwithitscriticallevel(CL)notlessthan150mm(6inches)abovethefloodleverrimofthefixtureorappliancesserved;ordeckmounted/equipmentmountedatmosphericvacuumbreakersshallbeinstalledinaccordancewiththemanufacturer'sinstructions,withitscriticallevel(CL)notlessthan25mm(1inch)abovethefloodlevelrimofthefixtureorapplianceserved.
【中国标准分类号】:T24
【国际标准分类号】:13_040_20
【页数】:
【正文语种】:英语