As noted above, in the literature these issues almost no personal attention. The need to equip piping liners at the intersection of individual elements of the buildings can be justified by several factors.
Straight sections, such as risers from PEX pipe (PEX Tubing) are very sensitive to temperature changes and are able to significantly move. It is obvious that there must install the cartridges. This will create conditions for free movement of pipelines in the case of thermal strains at the possible installation and maintenance, seasonal and diurnal temperature extremes. However, we can not prevent movement of polymeric PEX pipe in the construction elements of buildings. To do this, arrange them joints so as to completely exclude the movement of polymer pipeline construction elements.
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