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GDC-J型电磁高真空挡板阀是以电磁力为动力直接带动阀板动作，使阀门开启或关闭。适用于真空系统中，用来切断或导通气流。适用介质为纯净空气和非腐蚀性气体。带反馈信号。
GDC-J Electro High Vacuum Flapper Valve
GDC-JQelectro high vacuum butterfly valve uses electromagnetic force to directly drive valve disc working. thus to make valve opened ro closed. It is applicable for vacuum system to cut off or put through the airflow. When valve is closed. and there is atmospheric pressure above the sealing face and vacuum below the sealing face, here the sealing effect is the best. Applicable medium can be pure air and noncorrosive gases.
Main Technical Performance
| 适用范围：Applicability | 105～1.3×10-4Pa |
| 阀门漏率：Valve Leak Rate | ≤1.3×10-4Pa.L/S. |
| 适用温度：Applicability | -30～+50℃ |
| 线围温升：Coil Temperature Rise | ≤65℃ |
| 开闭时间：Open-close Time | ≤5S |
| 电源电压：Mains Voltage | 220V/50Hz |
| 安装方向：Mounting Direction | 任意(可反顶一个大气压) |
Materials of Main Parts
阀体、阀板：碳钢或不锈钢
密封件：丁腈橡胶、氟橡胶、波纹管(轴封)。
Body, and disc: carbon steel or stainless steel
Sealing element: NBR, Viton, bellows(shaft seal)
Overall and Connection Dimensions(mm)
| Model 型号 | DN | D1 | D | A | B | H |
| GDC-J16(b) | 16 | 17.2 | 30 | 40 | 55 | 193 |
| GDC-J25(b) | 25 | 26.2 | 40 | 50 | 60 | 203 |
| GDC-J32(b) | 32 | 34.2 | 55 | 58 | 70 | 237 |
| GDC-J40(b) | 40 | 41.2 | 55 | 65 | 70 | 244 |
