Expansion Joints

Internal liners can be used to either protect the metallic bellows from erosion or reduce turbulence across the bellows. 

External Covers providing a  protective shield that spans the length of the bellows.  Covers prevent direct contact with the bellows, offering personnel protection, as well as protection to the bellows from physical damage such as falling objects, weld splatter or arc strikes. They also serve a purpose as insulation of the bellows.