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.
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主要技術性能 Main Technical Performance
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適用范圍：Applicability
105～10-2Pa
閥門漏率：Valve Leak Rate
≤1.3×10-2Pa.L/S.
適用溫度：Applicable Temperature
-30～+50℃
線圍溫升：Coil Temperature Rise
≤65℃
開閉時間：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 隔膜：丁腈橡膠加滌綸綢
Body, bonnet and disc: carbon steel or aluminium alloy Diaphragm: NBR and terylene silk
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