COMBI joints came from customers' desire to make connections between pipes made from different materials and with great difference in outer diameters.
COMBI joints are used in cases when joints with the usual diameter extent can not be used for connecting pipes with great differences in outer diameters.
Looking at the construction solution, COMBI joints are similar to the first generation
UNIVERSAL joints, the difference being that COMBI joints are not symmetrical and they cover different diameters on either side.
In the table below are shown possible combinations of pipe diameters which could be
connected, as well as the maximal deviation in nominal diameters which can be
covered.
As a special product, COMBI joints are made at customer's request.