What do you mean by expansion joint?

The expansion joint can be radially expanded within a certain area, and can also be free from the deflection that occurs when the pipeline connection is not the same radially within a certain perspective, which can largely facilitate the assembly and disassembly of the gate valve pipeline, and can be arbitrarily expanded within the allowable expansion amount of the pipeline, and has a limit once the huge expansion amount is exceeded to ensure the reliable operation of the pipeline.
The key to ensure the operation of the pipeline, with the following effects: compensation to absorb the radial, horizontal, angular thermal deformation of the pipeline; absorb the vibration of machinery and equipment, reduce the harm of machinery and equipment vibration on the pipeline; absorb the earthquake disaster, collapse on the deformation of the pipeline. The limit expansion joint is a limiting device added on both sides of the expansion joint in order to better improve the service life of the expansion joint. In order to prevent the expansion joint from becoming too long during the stretching process, the expansion joint is destroyed. The expansion joint is equipped with a limiting device on both sides of the expansion joint. This is why it is called a limit expansion joint.