Use this dialog box to select the part size that will be used to replace the currently selected pipe network part.
Expand the desired part family, select a part size, then click OK.
You can swap a part with a part that is the same type (pipe to pipe or structure to structure), but is from a different part family and/or part size.
For example, a pipe can only be swapped with another pipe; a junction structure can only be swapped with another junction structure; an inlet/outlet structure can only be swapped with another inlet/outlet structure; and a null structure can only be swapped with a junction structure. You cannot swap a pipe with a structure, and vice versa. Only parts that are available to be swapped display in the Swap Part Size dialog box.
If you want to replace a part with a different part type, you must delete the part, and then add the new one.
Note that when swapping parts, connection elevations are maintained. For example, pipe invert elevations remain the same if a pipe is swapped with another pipe, or if a structure with one or more pipes attached to it is swapped with another structure.