Pipe expansion joints are being used in order to absorb expansion and shrinkage movements of heating and hot water pipelines of High buildings. Pipe expansion joints are installed vertically and provides the system to work safely by its bellows.
There is 3 mm expansion in the pipelines with temperature 90/70 c. The expansion of 7 floor (21mt) building can be
absorbed by elbows at air pipeline and main pipeline. It is obligatory to use pipe expansion joints for buildings which is higher than 10 floors and it has to be installed in every 30 meters (10 floors).