Special expansion joints are intended for installation in excavation, as an alternative solution for service gland expansion joints.
The special compensator is a maintenance-free, pressure device used to eliminate axial stresses in pipelines. This compensator is designed on the basis of elastic and glands bellows with built-in directional and shield unit of the compensator.
On the other hand, the side, angular, torsional operation is blocked. A particularly important element is the outer cover securing the bellows against earth pressure. Type of connections for welding, flange.