Carbon Steel 2205 Duplex Steel Dn250 Double Flange Limit Expansion Joint For Water Plant

How the product works

The working principle of double flange limit expansion joints is mainly based on the principle of thermal expansion, cold contraction and elastic deformationIn piping systems, pipe lengths change due to factors such as temperature changes and pressure fluctuations. When the pipeline becomes longer due to the increase of temperature, the telescopic body undergoes elastic deformation under the constraint of the limiting device to absorb the increase in the length of the pipeline. When the temperature decreases and the pipe is shortened, the expansion body returns to its original shape, releasing the reduction in the length of the pipe.

Product performance characteristics

1. The double flange limit expansion joint can compensate for the axial expansion displacement of the pipeline due to the influence of thermal stress and mechanical vibration.
2. During installation, it can compensate for the docking problem caused by the error in the actual construction process, which greatly reduces the difficulty of construction and accelerates the construction progress.
3. Good telescopic performance, long service life, easy to use, can greatly alleviate the adverse effects of the axial thrust of the pipeline.
4. Double flange limit expansion joints can effectively eliminate the adverse effects of subsidence or crustal changes on the pipeline.

Product parameters

Scope of use of the product
Because the double flange limit expansion joint has good comprehensive performance, it is widely used in chemical industry, construction, water supply, drainage, petroleum, light and heavy industry, freezing and sanitation, plumbing, fire protection, electric power and other basic projects, especially suitable for pipelines with large vibration and frequent cold and hot changes.

Installation Instructions
1. The double flange limit expansion joint should be installed to keep all the moving parts able to achieve effective activities.
2. The double flange limit expansion joint should be installed with a guide bracket during installation, because the vibration formed by the pipeline under the action of thermal stress and mechanical vibration is irregular, so it is necessary to install the corresponding guide bracket to make the vibration of the pipeline consistent with the displacement compensation of the expansion joint, so as to protect the service life of the pipeline.
3. During the installation of the double flange limit expansion joint, the bolts should be symmetrically pressurized and gradually tightened to prevent local leakage.
4. The double flange limit expansion joint should be maintained regularly in use, so as to reduce the probability of hidden dangers.

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Product packaging