EXPANSION JOINTS

 
Universal expansion joints

They are composed of two bellows able to absorb every kind of movement: axial, lateral and angular. 
As represented in figure, increasing the length "L", of the intermediary line, automatically increases also the side run that the joint can absorb.

Also in this case, they are installed between two fixed points, planned to bear lateral thrust Fy and from two guides planned to bear the thrust due to the pressure Fp.

Universal and lateral spherical expansion joints installation schemes