原文：
务必记住所推荐的旋塞阀门的用途是什么，并对所应用的环境进行分析，这样才能决定最适合于安装什么样的阀门。在安装正确的旋塞阀之前，为了防止损坏旋塞阀，并保证充分发挥旋塞阀的工作性能，请阅读一下安装指南。 1.先沿着垂直方向切割管道，并修整、去除毛刺，测量管径。 2.使用纱布或钢丝刷xx管道和切割部位，使其金属表面发光发亮。建议不要使用钢丝绒。 3.在管道的外面和焊接罩的内部涂上焊剂，焊剂必须xx覆盖焊接表面。请有节制地使用焊剂。 4.要确保阀门处于开启状态。先对管道加热。尽可能多的将热从管道传递到旋塞阀。避免延长旋塞阀本身的加热时间。

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译文：
Important to remember the door recommended is the use of any plug, and applied to analyze the environment, so as to determine the most suitable for what kind of valve installation. Before you install the correct plug, in order to prevent damage to the plug, and plug in the work to ensure full performance, please read the installation guide. 1. The first vertical cut along the pipeline, and finishing, burr diameter measurement. 2. Use of gauze or wire brush to remove pipes and cut to bright metal. Steel wool is not recommended. 3. Outside of the pipe and welding mask internal Apply flux soldering flux must be completely covered surface. Please use sparingly flux. 4. To ensure that the valve is open. Heat to tube first. As much as possible to the heat transfer from the pipe plug. Avoid prolonged heating of plug itself.