The GPM flow rate of the Birchmeier TeeJet Fan Spray Assembly is .2 gallons per minute. There is not a tip that is adjustable to ease calibration at the same time.
The Birchmeier TeeJet Fan Spray Assembly is designed to be specifically compatible with Birchmeier sprayers. We cannot guarantee that it would fit your RYOBI sprayer.Â
Birchmeier TeeJet Fan Sprayer Nozzle (90000510) is for Birchmeier sprayers. We would advise to contact the manufacturer in this case.