[".止回阀阀芯异响
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",["。止回阀阀芯异响，似乎有异物敲击声，会不会是阀芯损坏。一个是气体管道止回阀阀芯异响，一个是液体管道止回阀阀芯异响。阀门安装方向都是对的，且阀门后都有止回阀。同一个厂家，不方便透露。请问有什么可能性
"3. "；。阀芯只有在松动或脱落时才会发出撞击声，，我感觉是不是管线流速过快造成的截流声？
？
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