■DYC-JQ型－电磁真空压差阀■DYC-JQ型电磁真空压差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，阀门利用大气压力使阀板自动关闭，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。■DYC-JQElectro-vacuumDifferentialPressureValve■DYC-JQelectro-vacuumdifferentialPressurevalveisasafelyvalveformechanicalvacuumpump.Itismountedattheintakenozzleofmechanicalvacuumpump,synchronouslyopenedandclosedwiththepump.Incasethatpumpstopsworkingorpowersupplyissuddenlybrokenoff,valvediscwillbeclosedautomaticallyunderatmosphericpressure,tokeepthevacuumsystemvacuumandtheairchargedintopumpc***ity,thustopreventpumpoilfromreverseflowthatcanpollutethevacuumsystem.Applicablemediumcanbepureairornoncorrosivegases.■主要技术性能MainTechnicalPerformance■■■适用范围：Applicability105～10-2Pa阀门漏率：ValveLeakRate≤1.3×10-2Pa.L/S.适用温度：ApplicableTemperature-30～+50℃线围温升：CoilTemperatureRise≤65℃开闭时间：Open-closeTime≤3S电源电压：MainsVoltage220V/50Hz■主要零件材料MaterialsofMainParts■■阀体、阀盖、阀板：碳钢或铝合金隔膜：***橡胶加涤纶绸Body,bonnetanddisc:carbonsteeloraluminiumalloyDiaphragm:NBRandterylenesilk)