What does "_MP" mean on the coupling families?

Question

I notice that you have a couple of different versions of the same couplings and some flanges differentiated by ending with “_MP”. What is the difference between them and when should I use a specific style?

Jim Gleeson - Victaulic · Answer

We have two different styles to “keep Revit happy”. The software expects certain types of fittings to be used in specific applications. Our standard coupling families are to be used whenever a coupling will connect to pipe. The “_MP” (Multiport) are for all non-pipe connections. Ex. Fitting to fitting, fitting to accessory, fitting to equipment, accessory to accessory, etc.

What does “_MP” mean on the coupling families?