One, do PP pipes need to have expansion joints?
Expansion joints are not always necessary. The need for installing expansion joints on PP pipes depends on the temperature variations in the installation location. If there are significant temperature variations, expansion joints are required. If the temperature variations are minimal, expansion joints are not necessary.
Two. What is the function of expansion joints in pipelines?
Expansion joints, also known as expansion joints, compensators, and expansion plugs, are used to compensate for horizontal thermal expansion and contraction of pipes. This helps prevent PP pipes from expanding or contracting due to large temperature changes. Additionally, expansion joints can absorb vibrations from equipment, reducing the impact of vibrations on the pipes. Installation of expansion joints on PP pipes can also absorb deformations caused by seismic subsidence.
Three. Installation of expansion joints for PP pipes
First, loosen the short bolts on the expansion joint, then adjust the length of the long bolts in the expansion joint to the desired length. After tightening the connecting bolts at both ends, attach the short bolts.
IV. Installation Considerations for Expansion Joints
1、The expansion joint filler should be inspected for its model, specifications, and pipe configuration before installation, and must comply with the design requirements.
2、The expansion joint should be adjusted to a suitable length (between the maximum and minimum installation lengths), and the pressure plate bolts should be loosened during installation. Then, tighten the bolts diagonally, ensuring they are not over-tightened to create a sealing effect.
3、When using a telescoping tool with an inner sleeve, ensure that the direction of the inner sleeve is consistent with the flow direction of the medium.
4、It is strictly prohibited to adjust the installation of PP pipes using methods that cause the expansion joint to deform. This practice is highly detrimental, as it can impair the normal function of the expansion joint, reduce its service life, and increase the load on the piping system, equipment, and supporting structures.