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.
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主要技术性能 Main Technical Performance
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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℃（腈橡胶） -30～+150℃（氟橡胶）
气源压力：Annoy pressure
0.4～0.6MPa
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主要零件材料 Materials of Main Parts
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阀体、阀盖、阀杆：铝合金、碳钢或不锈钢 密封件：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）
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