When rubber expansion joint need add limit device

When the rubber expansion joint is susceptible to large stretching, vibration, torsion or lateral movement during use, sometimes it is necessary to add limiters(tie rods) to ensure the normal operation of the joint to extend its service life.

Here are some reasons why rubber expansion joint need to be restricted:
Prevent excessive bending: When connecting two pipes or equipment, the rubber joint may bend. Excessive bending will cause fatigue failure of the rubber material, thus shortening the service life of the joint.
By adding a limit device, the deflection of the expansion joint can be limited, stress concentration can be reduced, and the service life of the rubber expansion joint can be extended.
Controlling displacement: In some applications, rubber expansion joint may need to withstand significant forces or vibrations, which cause them to move at the joint. Displacement can cause the joint connection to fail, resulting in leaks or other damage. In this case, by adding a limit device, the displacement range of the joint can be limited to avoid damage.
Protect connecting parts: There may be other sensitive parts on the pipes or equipment connected by rubber joints, such as valves, pumps, etc. When the rubber joint is displaced or vibrated under force, it may cause impact or damage to other parts.By adding a limit device, the displacement range of the joint can be limited and the safety of other sensitive parts can be protected.
Reduce noise and vibration: Rubber expansion joint may generate noise and vibration when conveying fluids or gases. Excessive noise and vibration can have an adverse effect on equipment, the environment around the pipeline, and operators. By adding a limiter, it can reduce the vibration amplitude of the rubber joint and reduce the noise and vibration level.
In short, when the rubber expansion joint is faced with loads such as tension, vibration, torsion or lateral movement, in order to increase its stability, extend its service life and reduce the impact on other components, it is necessary to add limit devices to limit its deflection and displacement range, etc., to ensure its normal operation and safe operation.
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