What is the purpose of expansion joints in a boiler system?

Expansion joints are critical components in a boiler system designed to accommodate thermal expansion and contraction due to temperature changes. As the boiler heats up, the materials expand; conversely, when it cools down, they contract. Without these joints, the stress caused by this movement could lead to significant mechanical failure, such as cracking or warping of the piping and other system components.

By incorporating expansion joints, the system can maintain structural integrity, allowing it to function optimally while handling fluctuations in temperature and pressure. This ensures long-term reliability and safety in the boiler operation, ultimately protecting both the equipment and the surrounding workplace environment from potential hazards associated with thermal stress.