管路上的各种阀门在安装前要拆开清洗，检查阀柄是否灵活，并经试压不漏后方可安装。
Take apart all valves along the pipeline for washing before installation, check whether valve handles are flexible. The valves can be installed after passing the pressure test.
我们要重新检查以下有关设备、管路、电缆等安装方面的缺陷。
We'll examine again the defects in the installation of the following related equipment, pipe lines and cables.
实验室气体管路主要材质为不锈钢，安装在天花板下方，沿着墙走，这样便于检查和维修。
The gas pipe, made of stainless steel, shall be led into lab by running below ceiling or along the wall so that all gas pipes should be easily checked and maintained.
实验室气体管路主要材质为不锈钢，安装在天花板下方，沿着墙走，这样便于检查和维修。
The gas pipe, made of stainless steel, shall be led into lab by running below ceiling or along the wall so that all gas pipes should be easily checked and maintained.
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