I did some work on a system thats new to us. The front yard was about 50'x30'...The original installer uses sprayheads, and only 6 of them to do it. Needless to say it wasn't exactly head to head Anyways, we needed to move two heads because they were actually in the cities right of way, so I had one of the guys dig it up. Found the head, attached to funny pipe. Started following the funny pipe and after about 4' we find a funny pipe tee, heading towards another head. Turns out the original installer was running 2 heads off one run of funny pipe about 10' from a 3/4" lateral.....:Laugh: Anyways, thats only the first weird thing. In the side yard, I had to move a few more heads and discover that they ran funny pipe down the length of the yard, and tee'd each head into it with about 4" of funny pipe on each tee. I'm guessing that its being fed by a PVC line in a few spots, because it actually had pressure....but still weird. I've never seen anyone use funny pipe for more than one head, or run it more than 2'-3'.