■ DYC-JQ electro-vacuum differential Pressure valve is a safely valve for mechanical vacuum pump. It is mounted at the intake nozzle of mechanical vacuum pump, synchronously opened ａnd closed with the pump. In case that pump stops working or power supply is suddenly broken off, valve disc will be closed automatically under atmospheric pressure, to keep the vacuum system vacuum ａnd the air charged into pump cavity, thus to prevent pump oil from reverse flow that can pollute the vacuum system. Applicable medium can be pure air or 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 ≤1.3×10-2Pa.L/S.
适用温度：Applicable Temperature -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
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