The Flow Pipe panel is shown for segmented flow pipes (as opposed to the classical flow pipes).
The following properties are on the Flow Pipe panel:
The value to be used as the content of this pipe, together with the outflow rate, to determine the time for products to travel from one end of the to the other. If this value is not specified (zero) the sum of all the segments will be determined based on the physical segment end points in the model.
Segment end points
The end points of the segments of the pipe, in the local coordinate system of the object, such that the start point of the first segment will be (0, 0, 0). These coordinates will be automatically filled while you create the segmented pipe, you can use this table to edit them later.