My other designs for irrigation spreaders don't work exceptionally well if you have less-than perfect water; as in a few pieces of leaf floating in them. This is designed to have a larger opening, and therefore be more tolerant of the occasional piece of detritus. A side-effect is, of course, higher flow. The picture was taken with a purely gravity-fed flow from about 4 feet high. It does produce quite a nice wide pattern. I uploaded two files; one is a single sprayer, and another is four at a time. Since they're quite small, it helps to make several at a time so the previous layers get time to cool. It fits 1/4" irrigation tubing quite snugly; I would recommend inserting them with pliers, or perhaps sanding just a bit off of the ridge. In any case, they're not going to come out under siphon-level pressures.