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產(chǎn)品說(shuō)明   服務(wù)承諾   訂貨流程   上海吉邁閥門制造有限公司主要生產(chǎn)≦DDC-JQ型－電磁真空帶充氣閥≧也是國(guó)內(nèi)真空閥門生產(chǎn)商之一。公司經(jīng)營(yíng)范圍:閥門,管件,流體設(shè)備的生產(chǎn)，加工，銷售，管道配件，建筑材料，五金交電，自控設(shè)備的銷售，從事貨物及技術(shù)的進(jìn)出口業(yè)務(wù)！歡迎新老客戶來(lái)電，來(lái)函，我們將竭誠(chéng)為您提供滿意的服務(wù)！ DDC-JQ型－電磁真空帶充氣閥 DDC-JQ型電磁真空帶充氣閥是機(jī)械真空泵安全閥，安裝于機(jī)械真空泵的進(jìn)氣口，并與泵同步開啟和關(guān)閉。當(dāng)泵停止工作或電源突然中斷時(shí)，閥門自動(dòng)關(guān)閉。使真空系統(tǒng)保持真空并將大氣充入泵腔內(nèi)，從而避免泵油逆向流動(dòng)而污染真空系統(tǒng)。適用介質(zhì)為純凈空氣和非腐蝕性氣體。 DDC-JQ Electro-vacuum Charging Valve DDC-JQ electro-vacuum charging valve is a safety valve for vacuum, pump. It is mounted at the intake nozzle of vacuum pump, synchronously opened and closed with the vacuum pump. In case that vacuum pump stops working or power supply is suddenly broken off, valve will be cosed automatically to keep the vacuum system vacuum and the air charged into the cavity of vacuum pump, thus to prevent pump oil from reverse flow that can pollute the vacuum system. Applicable medium can be pure air and noncorrosive gases. 主要技術(shù)性能 Main Technical Performance 　適用范圍：Applicability 　10510-2Pa 　閥門漏率：Valve Leak Rate 　≤6.7×10-3Pa.L/S. 　適用溫度：Applicability 　-30+50℃ 　線圍溫升：Coil Temperature Rise 　≤65℃ 　開閉時(shí)間：Open-close Time 　≤3S 　電源電壓：Mains Voltage 　220V/50Hz 主要零件材料 Materials of Main Parts 閥體、閥蓋、閥板：碳鋼或鋁合金 密封圈：丁腈橡膠 Body, bonnet and disc: carbon steel or aluminium alloy Seal ring: NBR CONSTRUCTION FIGHTS(mm) 外形及連接尺寸(mm)(JB919) Overall and Connection Dimensions(mm)