... 限压阀套pressure limiting valve sleeve 止回阀套check valve sleeve 紧急放风阀组成emergency exhaust valve assembly ...
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Remove the blanking plugs from the cabin recirculation fan (15), the sleeve (1) and from the check valve (7).
从客舱再循环风扇（15）上拆下堵盖、从单向活门上拆下衬套。
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