In the case of a constant support, the load is on the support. This makes the constant support part of a standing system. In the case of a constant support, the force is constant and independent of the path.
In the case of a constant hanger, the load suspends from the constant hanger. This makes the constant hanger part of a suspensory system. In a constant hanger, the force is constant and independent of the path.
Lisega constant supports are mainly used to support moving, very hot equipment and pipes or where very large vertical movements occur with the desire to realise the smallest possible external force from the supports.