Rubber expansion joint (vibration compensator)— is a type of compensating device consisted of rubber bellows and flanges, permitting to compensate for axial, shift, angular movements, vibration, temperature changes in the length of pipelines. Rubber expansion joints are often called vibration joints.
Expansion joints construction details
The rubber bellows can be various types of gum elastic, rubber (natural or synthetic elastomers), the material is selected depending on the medium temperature and aggressiveness. The specified composition of rubber mixture is applied to the internal flexible cord, made of nylon and aramid fibers, with flanges fixed to its endings for attaching the rubber compensator to the pipeline.
Flanged type expansion joints advantages:
-optimal solution with minimal face-to-face dimensions, as due to their elasticity joints are able to compensate for considerable movements
-compensate axial, shift, angular and torsional movements
-protect against water hammer damage
-safe, reliable and long life decision, maintenance free
-corrosion and chemical erosion resistance
-optimal control of elasticity and pressure
-low elastic rigidity
-vacuum and pressure resistance
-piping misalignment compensation
-dampen sound transmission and reduce vibration.