DDC-JQ电磁真空带充气阀DDC-JQ型电磁真空带充气阀是机械真空泵安全阀，安装于机械真空泵的进气口，并与泵同步开启和关闭。当泵停止工作或电源突然中断时，阀门自动关闭。使真空系统保持真空并将大气充入泵腔内，从而避免泵油逆向流动而污染真空系统。适用介质为纯净空气和非腐蚀性气体。DDC-JQElectro-vacuumChargingValveDDC-JQelectro-vacuumchargingvalveisasafetyvalveforvacuum,pump.Itismountedattheintakenozzleofvacuumpump,synchronouslyopenedandclosedwiththevacuumpump.Incasethatvacuumpumpstopsworkingorpowersupplyissuddenlybrokenoff,valvewillbecosedautomaticallytokeepthevacuumsystemvacuumandtheairchargedintothec***ityofvacuumpump,thustopreventpumpoilfromreverseflowthatcanpollutethevacuumsystem.Applicablemediumcanbepureairandnoncorrosivegases.电磁真空带充气阀主要技术性能MainTechnicalPerformance适用范围：Applicability105～10-2Pa阀门漏率：ValveLeakRate≤6.7×10-3Pa.L/S.适用温度：Applicability-30～+50℃线围温升：CoilTemperatureRise≤65℃开闭时间：Open-closeTime≤3S电源电压：MainsVoltage220V/50Hz电磁真空带充气阀主要零件材料MaterialsofMainParts阀体、阀盖、阀板：碳钢或铝合金密封圈：***橡胶Body,bonnetanddisc:carbonsteeloraluminiumalloySealring:NBR)