Pearwalk Engineering as responsible manufacturers of expansion joints take every design and manufacturing precaution to ensure the user receives a reliable product. The installer and user have the responsibility to handle, store, install, and apply the expansion joints in a way which will not impair the quality built into them.
Some conditions of outdoor storage may be detrimental to the units and where possible should be avoided; preferably the storage should be in a cool, dry area. Where this cannot be accomplished the expansion joint manufacturer should be so advised either through the specifications or purchase contract. Care must be taken to avoid mechanical damage caused by stacking, bumping or dropping. For this reason it is strongly recommended that covers be specified on all expansion joints to protect the bellows. Certain industrial and natural atmospheres can be detrimental to some bellows materials. If expansion joints are to be stored or installed in such atmospheric environments materials should be specified which are compatible with these environments.
Thermosel expansion joints are shipped with documents which provided the installer with full instructions covering the installation of the particular expansion joint. These documents should be kept with the expansion joint until installation is completed.
Metallic bellows-type expansion joints have been designed to absorb a specified amount of movement by flexing of the thin-gauge bellows. If proper care is not exercised in the installation of the expansion joint cyclic life pressure capacity could be reduced leading to premature failure and damage to the piping system.
It is important that the expansion joint be installed at the length specified by Thermosel Solutions. They should never be extended or compressed in order to make up for deficiencies in length nor should they be offset to accommodate misaligned pipe.
Remember that a bellows is designed to absorb motion by flexing. The bellows must therefore be sufficiently thick to withstand the design pressure, whilst being thin enough to absorb the required flexing. Optimum design will always require a bellows to be of thinner material than virtually any other component in the piping system in which it is installed. The installer must recognize this relative fragility of the bellows and take every possible measure to protect it during installation. Avoid denting, weld spatter, arc strikes or the possibility of allowing foreign matter to interfere with the proper flexing of the bellows.
With reasonable care during storage, handling, and installation the user will be assured of the reliability designed and built into the expansion joint.
For further information about installing your expansion joints please click here.