Force Balanced FLEX-TEND® Flexible Expansion Joint

The EBAA Force Balanced Flex-Tend® is particularly suited for use in above ground applications where unbalanced thrust forces are neither desirable nor easily accommodated. These applications require special attention to the overall forces and restraint of the piping system.

The installation of a Force Balanced Flex-Tend requires the restraint of all adjacent pipe joints in order to transfer expansion/contraction forces to the unit and to produce the desired force-balancing effect without undue movement or separation of the adjacent joints. Lock-ring type pipe and fitting joints are required to have the assembly clearance removed by extending the joint prior to the installation of the Force Balanced Flex-Tend and pressurization of the system.

Joint restraint and clearance removal of adjacent joints is necessary in both above and below ground Force Balanced Flex-Tend installations.

When connecting a Force Balanced FLEX-TEND to HDPE pipe, a flanged end connection is required. This is to be joined to a fused flange adapter on the HDPE pipe. A filler flange between the two gaskets is necessary to assure proper seal contact.