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GDQ型气动高真空挡板阀是通过电磁换向阀改变气路方向，控制执行气缸驱动阀门作启闭运动。用于接通或切断真空管路中的气流。适用介质为纯净空气和非腐蚀性气体。 带反馈信号装置。
GDQ Pneumatic High Vacuum Flapper Valve
GDQ pneumatic high vacuum flapper valve uses solenoid directional valve to change the direction of air passage, and controls the actuating cylinder to drive the valve opened and closed. It is used to put through or cut off the airflow in vacuum pipeline. Applicable medium can be pure air and noncorrosive gases.
With signal feedback device.
Main Technical Performance
| 适用范围：Applicability | 105～1.3×10-4Pa(轴封为橡胶) 105～1.3×10-5Pa(轴封为波纹管) |
| 阀门漏率：Valve Leak Rate | ≤1.3×10-4Pa.L/S.(轴封为橡胶) ≤1.3×10-5Pa.L/S.(轴封为波纹管) |
| 适用温度：Applicable Temperature | -25～+80℃(丁腈橡胶) -30～+150℃(氟橡胶) |
| 气源压力：Annoy pressure | 0.4～0.6MPa |
Materials of Main Parts
阀体、阀盖、阀杆：铝合金、碳钢或不锈钢
密封件：丁腈橡胶、氟橡胶、波纹管(轴封)。
Body, bonnet and stem: aluminium alloy, carbon steel or stainless steel
Sealing element: NBR, Viton, bellows(shaft seal)
Overall and Connection Dimensions(mm)
| Model 型号 | DN | D1 | D | A | H | B | W | 法兰标准 |
| GDQ-J10(b) | 10 | 12.2 | 30 | 30 | 120 | 52 | 40 | GB4982 |
| GDQ-J16(b) | 16 | 17.2 | 30 | 40 | 140 | 58 | 40 | |
| GDQ-J25(b) | 25 | 26.2 | 40 | 50 | 150 | 58 | 40 | |
| GDQ-J32(b) | 32 | 34.2 | 55 | 58 | 158 | 58 | 40 | |
| GDQ-J40(b) | 40 | 41.2 | 55 | 65 | 183 | 75 | 50 | |
| GDQ-J50(b) | 50 | 52.2 | 75 | 70 | 190 | 75 | 50 |
