TEB – Tied Expansion Bellows
Aflex Tied Expansion Bellows allow for small amounts of lateral deflection without exerting any pressure thrust onto the pipeline. TEB are used to absorb the thermal expansion of a pipe leg at a joint by lateral deflection, as shown in the diagram on the right.
The tie rods contain all the pressure thrust from the bellows, preventing it from being applied to the pipe and anchors. This allows for the bellows to be used without thrust bearing anchors at each end of the pipeline.
TEB assemblies are not designed to move axially. More information can be found on the implications of using a TEB for axial movement here.