Rain Bird R-VAN18 adjustable rotary nozzle, 10-pack
13–18 ft; fits Rain Bird 1804/1806/1812 spray bodies; arc and radius adjust by hand. Specs
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How to adjust sprinkler heads
Spray heads: twist the stem to aim, then set the pattern and distance. Rotors: find the left edge first, then set the arc.
Check this first
- Spray heads: twist the stem to line up the spray direction, turn the nozzle to set the pattern (adjustable nozzles), and turn the +/− screw to set distance (Rain Bird).
- Spray tilted or short? Check the head is level and not sunk; try a longer-throw nozzle or taller body (Rain Bird).
- Rotors (Rain Bird SA series): turn the cap fully right, then left; that’s the fixed left edge. Rotate the case to aim it. Don’t force past the left stop (Rain Bird).
- Set the rotor arc with a flat screwdriver: clockwise (+) for more, counter-clockwise (−) for less, 40°–360°. Running? Turn only in the direction it’s rotating (Rain Bird).
- Rotor distance: the radius screw cuts throw by up to 25%. For more change, swap the nozzle (Rain Bird).
▶ Watch howHow to Adjust a Hunter Rotor - Quick TipOfficial Hunter Landscape Irrigation video on YouTube ↗Switching to rotary nozzles? See upgrading to rotary nozzles.
Parts you may need
Rain Bird 1804VAN 4 in. pop-up spray head (multi-pack)
Pop-up spray body with adjustable-arc nozzle.
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When to call a pro
Not comfortable digging up valves or testing wiring? The EPA suggests hiring an irrigation professional certified by a WaterSense labeled program (EPA WaterSense).
Find a pro →Steps summarized from the linked manufacturer and EPA pages (checked 2026-10-18). If your valve or head brand differs, follow its manual.