Axial Expansion Joint is the simplest form of expansion joint. A flexible element either with flange end or Butt Weld End to absorb any combination of three basic movements. i.e. Axial movement, Lateral deflection and Angular rotation along the axis of the pipe line.
Axial Bellows do not control the movement of the pipes and in case the piping analysis indicate that the expansion joint should accept axial compression, then in that case the piping must be guided and constrained so that only that movement occurs.
Axial Bellows Expansion Joints do not resist any deflections with any force other than the resistance of the bellows and is incapable of resisting the pressure thrust along its axis. In general, Axial Bellows are the most economical of all types.