Why do expansion joints leak?

Why do expansion joints leak?
Expansion joints are a common pipe connection used to join pipes together to provide stability and flexibility. However, even the best expansion joints can develop leaks.
 
Leakage in expansion joints can be caused by one of the following reasons:
1. Material problems: Material problems may occur during the manufacturing process of expansion joints, such as inadequate quality of materials or deterioration of materials. If the quality of the materials used is not sufficient, the performance of the expansion joint may be affected, which may lead to leakage.
2. Design problems: The design of the expansion joint may also affect its performance. If the design is improper, sealing problems may occur inside the expansion joint, which may lead to leakage.
3. Installation problems: The installation of expansion joints may also lead to leakage. Improper installation may lead to wear or damage to the internal parts of the expansion joint, which may result in leakage.
4. Use problems: Problems may also occur with the use of expansion joints, such as improper or excessive use. Overuse may lead to wear or damage of the internal parts of the expansion joint, which may result in leakage.
 
Therefore, a series of measures need to be taken to avoid leakage of expansion joints. When installing expansion joints, they should be installed according to the installation instructions to ensure that they are tightly connected. When using expansion joints, proper maintenance and care should be carried out to ensure that they perform well. If leaks are found in the expansion joint, the leaking location should be replaced immediately to avoid further leaks leading to rupture or damage of the pipe.
 
Expansion joints are a very important pipeline connection that can provide stability and flexibility to pipelines. However, expansion joints may also leak, so measures should be taken to avoid this. Understanding the principles, materials, design and use issues of expansion joints, and taking proper maintenance and care measures are key to avoiding leaks.