This video shows a step-by-step guide on how I constructed a small boom sprayer from scratch. You can see more details on building your own sprayer as well as lists of the items used in these articles: https://sprayerguru.com/how-to-build-...
https://sprayerguru.com/how-to-build-...

Video on regulating valve:    • Why Does My 12 Volt Sprayer Pump Cycl...  

More information from Sprayerguru.com:
Sprayer Calibration Guide: https://sprayerguru.com/sprayer-calib...
Selecting a Sprayer Nozzle: https://sprayerguru.com/how-do-i-choo...
12-Volt Sprayer Troubleshooting: https://sprayerguru.com/12-volt-spray...