DDC-JQ electro-vacuum charging valve is a safety valve for vacuum, pump. It is mounted at the intake nozzle of vacuum pump, synchronously openedclosed 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 vacuumthe 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 airnoncorrosive gases.
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DDC-JQ型主要技術(shù)性能 Main Technical Performance
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適用范圍:Applicability
105~10-2Pa
閥門(mén)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(kāi)閉時(shí)間:Open-close Time
≤3S
電源電壓:Mains Voltage
220V/50Hz
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主要零件材料 Materials of Main Parts
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閥體、閥蓋、閥板:碳鋼或鋁合金 密封圈:丁腈橡膠
Body, bonnetdisc: carbon steel or aluminium alloy Seal ring: NBR