Solving the Sprinkler Head Mystery: Dividing Water Streams Without Central Drenching

Have you ever encountered a situation where your sprinkler nozzle is watering each side but leaves the center completely dry? This is a common issue, and there are two potential causes: the wrong nozzle or damage to the existing nozzle. This article will guide you through identifying and fixing this issue.

Identifying the Problem

When a sprinkler nozzle is watering each side but not the middle, the first thing to check is the nozzle itself. There are several types of nozzles with different spray patterns and distances. Common spray patterns include quarter circle (Q), half circle (H), and full circle (F). Each pattern is specifically designed to water different areas. For example, there is an SST nozzle that throws water 15 feet to the left and right but only 3 feet to the middle, making it ideal for long narrow strips of turf or plants.

Common Sprinkler Nozzle Patterns

Quarter Circle (Q): Sprays water in a 90-degree arc. Half Circle (H): Sprays water in a 180-degree arc. Full Circle (F): Sprays water in a complete 360-degree arc. SST (Split Stream to the Sides): Throws water 15 feet to the left and right but only 3 feet to the middle.

The SST nozzle is particularly useful for narrow areas, but it can be installed in the wrong location, leading to central drought. This could be the issue you are facing.

Damage or Clog: Another Possibility

Another possible issue is damage or a clog. Nozzles are small and come with a built-in filter to prevent debris from entering and clogging the nozzle. While clogging can be unclogged, it is often more efficient and cost-effective to replace the nozzle. Attempting to unclog a nozzle can easily damage the spray pattern, making the nozzle ineffective.

Replacing a Clogged Nozzle

The corrective procedure for both issues is the same: replace the nozzle. Different brands make both male and female threaded nozzles, so you can mix and match as long as the threading is correct. Before replacing the nozzle, ensure that your big box store carries multiple brands.

Installation and Adjustment

To replace the nozzle, turn off the irrigation system. Thread the new nozzle onto the head while the system is off. Once it is tight, twist the stem of the head to align the spray pattern with the target. You will hear and feel the stem clicking as you turn it, which is normal. This clicking sound indicates that the nozzle is properly aligned and attached.

Conclusion

Watering each side of your sprinkler but leaving the center dry can be frustrating, but it is a common issue with easy solutions. Whether it is a wrong nozzle or a clog, replacing the nozzle is often the best solution. Follow these steps to resolve the issue and ensure your shrubbery and turf is well-watered.