What Are Expansion Joints Used For?

Expansion joints (also known as expansion valves or compensators) are crucial devices used to absorb displacement and stress in pipelines caused by thermal expansion and contraction, vibration, or ground settlement. They prevent pipeline deformation and rupture, ensuring the safe operation of the system.

They primarily compensate for axial, lateral, and angular displacements in pipelines through their elastic or sliding structure. They also absorb equipment vibration, reduce noise, and facilitate the installation and maintenance of valves and equipment.

They are commonly found in long-distance pipeline systems for heating, gas, chemical, and power industries.