Ok all you sprayer builders out there, here's an update. While there is a wealth of information and parts at
www.accuspray.com, it's not the whole story. They shipped me a Tee-Jet catalog with the pump I ordered. There are many more variations of nozzle bodies and other miscl fittings than are available on the web. It would be worth getting a catalog before making final plans. The folks at accuspray were very helpful.
I settled on the XR-Teejet nozzle tips and plastic nozzle bodies. The plastic bodies are nice in that they provide a really nice length of thread and a nut to mount the nozzle in the bracket. Only problem i've had so far is that the brass caps that I ordered went on cross threaded in 5 of 7 cases. Even had one of the toolmakers at work try one and he couldn't get it on straight, so it's not a case of fumble fingers. I have had problems in the past with nylon parts in similar applicatons splitting, so I chose to go with the brass caps. I was able to chase the threads, but in the future, i'd go with the plastic caps and order extra. The mounting nut that comes with the plastic body goes on easily, I expect that a plastic cap would also. They also have brass nozzle bodies with male or female pipe threads to attach a hose barb. These are ony $.42, so they might be a more robust way to build a nozzle body with hose attachment for about the same price as the plastic one, but I can see no simple way to fasten these into a mount bracket.
So, what does it all cost? My nozzle assemblies are made from a plastic body, 100 mesh screen, nozzle, cap and a mount bracket to mount on 1.5 inch square tube, and come to $8.15 each. The bracket is $3.50 of that, so it could be a good place to homebrew. The regulator and a pair of ball valves from Grainger ran about $32. I ordered 600 psi, 3/8 pvc hose to conect it all at $.59/foot. For 5 nozzles, the total is about $250. There will be a few more bucks in miscl fittings that I won't know i need 'till I actually assemble it to the tractor. It will pay for itself when I spray this coming spring.
A breakdown of the components (with all the necessary disclaimers about accuracy and suitability etc):
Double barb nylon nozzle body 8120-NYB-406TD $1.14 (single barb same price)
100 mesh strainer 8079-PP-100 $0 .42
Nozzle XR8001 $2.64
brass cap CP1325 $0.48
mount bracket for 1.5" sq tube AA111SQ-1-1/2 $ 3.47
Grainger:
regulator 4UN31 $21.25
ball valve 5X713 $5.27
Happy building
Craig
Hershey, PA