First, I need to apologize, I didn't realize that the link didn't lead anywhere...
Flow configuration allows the user to select which side of pipes can be 'connected' to other pipes.
With regards to your mod, this would mean allowing or disallowing the two and three-connected pipes to ground to not transmit fluid in specified locations.
Now, I realize (recently) that the two-sided pipe to ground can be substituted with a one-sided directional pipe to ground, but if, say, I want to have an 'L' (one going out normally, and one to the side) shape pipe to ground, the only way to do this is with another (much more complicated) mod, and I prefer yours.
Let me know if I am mistaken.
Thank you for the quick response. (and I understand that you don't have much time for modding, that's fine).