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带反馈信号装置。
主要技术性能：
外形及连接尺寸
主要技术性能
适用范围：Applicability
105～1.3×10-7Pa
阀门漏率：Valve Leak Rate
≤1.3×10-7Pa.L/S.(DN≤200)
≤6.7×10-7Pa.L/S.(DN≥250)
适用温度：Applicable Temperature
-30～+150℃
阀门开启时阀板两侧的压差：
The differential pressure between the two sides of valve disc upon valve opening: ≤2.7×103Pa.
电源：Valve of power
220V/50Hz
