Heres what I did...you know spray tips like go on a pressure washer or a misting type sprayer? I found one that makes a spiral type, high velocity jet spray. The tip had 1/4 npt male threads so I ended up soldering the nozzle part to the upper block plate.
I made sure of flow,spray and jet contact with the base plate before I soldered it in place. If I remember correctly the tip needed some modification to acheive the proper pattern of spray.
Just an idea to get you started.
