Under what circumstances do rubber expansion joints require the use of a limit device?

The rubber expansion joint limit device is a device to protect the bendable rubber flexible joint from the danger of pull-off, and the displacement of the bendable rubber flexible joint is controlled within a certain range to ensure the stable operation of the bendable rubber flexible joint and the pipeline.
Anti-pull-off limit device is based on the function of the original product to add a limit device, the pipeline in the promised expansion and contraction can be free to play a limit once the expansion and contraction to ensure the operation of the pipeline, especially for vibration or a certain slope and bend in the pipeline connection. What are the requirements for the installation of the rubber flexible connection limit?
The installation requirements of the limit device.
1 . Pipe caliber if greater than DN200 need to be installed limit device, this is due to the larger the caliber of the pipe, the sphere of the elasticity of the performance of more significant, by adding such devices to improve the unrest of large diameter bendable rubber soft connection operation.
2 . Overhead installation of bendable rubber flexible connections, also if the case of large-diameter pipeline, to install a limit device, this is due to the suspension of the installation of bendable rubber flexible connections can not be unloaded through the support, only the installation of limit devices to improve the unrest of the operation of bendable rubber flexible connections.
3 . In the bend of the pipeline installed bendable rubber flexible connection, also need to install limit devices, which is due to the influence of the inertia of the pipe will cause a strong impact on the bend and strong impact of the product, through the installation of piers and brackets and the product itself configuration limit device to ensure the operation of the bend.