Compensators are used to absorb high expansion quantities in very long pipelines.
As the knuckle increases, the torsion of the compensator increases. Although this can be avoided by liner in a certain way, the best solution is the application of external pressure compensator.
It is also suitable for use in high-safety fluids (eg hot oil, etc.).
By changing the direction of the fluid and applying the pressure to the outside of the bellows, a compensator is formed that can withstand pressure and expansion without torsion.