What are the causes of leaking dismantling joints?

Dismantling joints are more commonly used pipe joints, some customers react to the phenomenon of water leakage when using dismantling joints, so if the dismantling joints leak, what are the reasons for it?
  
1 . Some customers want to buy cheap disassembly joints, often do not pay attention to quality issues, if the quality of the joint is not good, the production process does not meet the requirements, in the process of use will appear lato, water leakage phenomenon.
2 . In fact, dismantling joints can also be called joint expansion joints, is a certain amount of expansion. Some people think that the joint material can be stretched and compressed at will, but often the phenomenon of being pulled off occurs, resulting in water leakage.
3. Each product has an executive standard, in which the expansion amount of each model is clearly marked, as well as a certain deflection angle. In the whole production process, the dismantling joint is executed strictly according to the standard. This is the only way to ensure the quality of the dismantling joints.
4 . Small diameter disassembly joints are fine, but large diameter ones need to be equipped with anti-pull-off limiting devices to prevent the ball from being pulled off due to the displacement of the pipeline, resulting in water leakage.