If indicated in the order, the Spring Hangers are adjusted at the factory to the specified installation load. The upper travel stop carries the spring load in the unloaded condition. The lower travel stop carries increased loads 8 e.g. hydraulic test of a steam line) in the installation position.

The travel stops must be removed before the piping is put into operation, but not before the Variable Spring Hanger is installed and fully loaded

If for example a water-bearing pipe is emptied it is recommended to use the upper travel stop in order to carry the difference load (medium weight).