■ 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.closed with the vacuum pump. In case that vacuum pump stops working.power supply is suddenly broken off, valve will be cosed automatically to keep the vacuum system vacuum.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.noncorrosive gases.
■ 主要技术性能 Main Technical Performance
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■ 适用范围:Applicability 105~10-2Pa 阀门漏率:Valve Leak Rate ≤6.7×10-3Pa.L/S. 适用温度:Applicability -30~+50℃ 线围温升:Coil Temperature Rise ≤65℃ 开闭时间:Open-close Time ≤3S 电源电压:Mains Voltage 220V/50Hz