Reducing Sprinkler Over-Spray: Valve Flow Control vs. Head Adjustment

Several Rain Bird 4000 rotors and shrub heads over-spray, wasting water and causing damage. Some heads fine. User wants flow control at heads.

Two Approaches

1. Valve flow control: If valves have a center handle/knob, it's a flow control valve. "These valves limit the flow to the sprinklers which shortens the distance of throw. It also cuts down the misting which waste water."
2. Individual head adjustment:
   • Rotors (4000): screwdriver slot above nozzle → turn clockwise to reduce radius.
   • Spray heads (shrub): screwdriver slot in center → turn clockwise to reduce radius.

Head adjustment helps but may not fully cure high-pressure misting. Valve flow control is more effective for systemic over-pressure.