Loosen the bolts after installing the bellow expansion joint, mainly to ensure that the compensator can expand freely and play its role in the pipeline.

     First, the purpose of loosening the bolt
      1. Protect the compensator and pipeline: Loosening the bolt can make the compensator expand and contract smoothly when the pipeline is displaced due to thermal expansion and cold contraction, so as to avoid damage to the compensator due to excessive compression or stretching, and protect the safety of the compensator and the pipeline.
      2. Ensure the stability of the pipeline system: By loosening the bolts, the compensator can effectively compensate for the deformation of the pipeline, thereby prolonging the service life of the pipeline and ensuring the stability of the pipeline system.

     Second, the specific operation of loosening the bolt
      1. Loosen the inner screws: After installing the bellow expansion joint, you need to loosen the inner screws on both sides of the fixing bolts of the compensator for 3~5 cm. This step is to reserve enough scaling space for the compensator.
      2. Lock the outer screws: After loosening the inner screws, you need to lock the outer screws on both sides of the bolt. This step is to ensure that the compensator will not fall off due to loose bolts or other unexpected situations during the expansion process.
     

     Third, Precautions before installation
      Before installing the bellow expansion joint, its model, specification and pipeline configuration should be checked to ensure that it meets the design requirements. At the same time, it is strictly forbidden to adjust the installation deviation of the pipeline by elongating and deforming, so as not to affect the normal function and service life of the compensator.

     In summary, loosening the bolts after the bellow expansion joint is installed helps to protect the safety of the compensator and the pipeline, ensure the stability of the pipeline system, and prolong the service life of the pipeline.