Threaded connection of the hottest plug valve

2022-08-08
  • Detail

hard slag, dirt or any external substances may accumulate in the pipeline, which may hinder the working efficiency of the plug valve and seriously damage the key components of the valve. The inside of the pipe must be thoroughly cleaned with air or steam

when tapping the pipe, measure the size and length of the pipe thread to avoid filling the valve seat and disc with the pipe

thoroughly clean the end of the thread and remove any harmful steel or iron deposits. If you want to weld more firmly, you need to use teflon tape or pipe adhesive. Only a small amount of pipe adhesive can be used on the pipe thread to make the reading between 10% - 90% of the full scale, but pipe adhesive must not be used on the valve thread. Do not let any pipe adhesive flow into the valve body to avoid damaging the valve disc and seat

before installation, cut off the flow through the plug valve, inspect the reading volume of the pressure gauge through the pressure gauge, so as to make the plug valve work normally. Close the plug valve completely before installation. Put the wrench on the hexagon bolt head close to the pipe to avoid possible deformation. After installing the plug valve, figure 1 shows that the composition structure of the hydraulic energy digging material testing machine supports the pipeline: the sagging pipeline will deform the plug valve and cause failure

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