An expansion joint is a device that is installed in a piping system to allow for movement or expansion of the pipes due to temperature changes or other external forces. Expansion joints are typically made of flexible material, such as rubber or metal bellows, and are used to absorb the movement of the pipes without causing damage to the system.
Expansion joints are necessary because pipes and other components in a piping system can expand or contract due to changes in temperature or other external forces. Without expansion joints, these movements can cause stresses on the system and may result in damage or failure.
Expansion joints are commonly used in a variety of applications, including in HVAC systems, process piping, and pipelines. They are particularly important in systems that are subjected to large temperature fluctuations or other dynamic loads.
In summary, expansion joints are devices that are used to absorb the movement of pipes in a piping system due to temperature changes or other external forces. They are necessary to prevent damage to the system and ensure its long-term stability and reliability.
					
