Check that the valve is installed properly and the feed valve does not leak.
检查阀是否安装正确；进料阀是否泄漏。
Postflight found nose gear mirror too low, check found due charging valve csn't lock, leak air.
航后发现前起落架镜面太低，结果发现是充气活门锁不死漏气所致。
Check modules are threaded into the valve adapter for leak proof operation.
止回阀模块通过螺纹旋进阀门适配器内，提供无泄漏运行。
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