■DYC-JQElectro-vacuum Differential Pressure Valve
■DYC-JQ electro-vacuum differential Pressure valve is a safely valve for mechanical vacuum pump. It is mounted at the inte 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.
■主要技術性能Main Technical Performance
閥門漏率：Valve Le 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
■主要零件材料Materials of Main Parts
Body, bonnet and disc: carbon steel or aluminium alloyDiaphragm: NBR and terylene silk
|CONSTRUCTION FIGHTS (mm)|
|■外形及連接尺寸(mm)Overall and Connection Dimensions(mm)|