A high quality moulded or custom made single arch unrestrained expansion joint consisting of a rubber bellow incorporating floating flanges.
This model absorbs all the movements in any one length of piping.
Unrestrained expansion joints under pressure will exert a considerable axial force on the pipeline, i.e. anchors. It is essential that checks are carried out when the expansion joint is first pressurized to ensure that there is no unforeseen stretching of the bellows. If unforeseen movement is apparent, then the pipe guides or anchors shall be examined to ensure that they have been installed correctly and sufficiently designed for the duty.
