Does the welding sight glass have to be disassembled and then welded?
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-Time:2020-03-14 08:42
The answer is yes.
Welding sight glass is a type of sight glass with no connecting flange. The two ends of the sight glass are directly welded to the pipe by electric welding or argon arc welding. It is not widely used, because it is difficult to use, maintain and replace in the later period, so there are not many users to choose, but some manufacturers choose it or save the budget, Or installation space limit and so on.
There is a very important sealing element in the middle of the welding structure. It is a soft material, generally PTFE, rubber, silica gel and other sealing gasket. Their common feature is that the sealing performance is superior, but the temperature resistance is greatly limited. When welding the cup and the pipe, the welding temperature is more than 1000 degrees, It is far beyond the limit temperature of these sealing materials. In short, the sealing gasket will be burnt by high temperature.
In addition, the welding process will produce a welding stress, which is easy to cause deformation and collapse of the glass tube.
To sum up, the welding sight glass must be disassembled, welded to the pipeline, and then installed.
If you are interested in the chemical pipeline sight glass, glass pipe sight glass, flange welding sight glass or need to consult, please click on our online customer service, or call us.
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