Sprinker SprayHead Nozzle Shut-Off Cap

Replace your normal sprinkler head/nozzle with this, to stop it from spraying water.

We have an area of our lawn that (temporally) can't get wet, but we want to keep the rest of the zone watering the lawn. I replaced that sprinkler head with this cap. It takes less than 30 seconds to install, and you can easily take it back off whenever you want to resume watering. The design includes the cap (printed in PLA) and a seal (printed in TPU). The cap alone might block most of the water without the seal, but there is no leaking with the seal.

This was installed and tested as a replacement for a Hunter MP Rotator nozzle. You can't turn the flow down to zero with the adjustment screw on the MP, so you need some solution like this (or you have to take the pop-up apart or something). This is quick and simple.

Consider this to be a temporary solution. I would not leave it there long term. It only needs to last a couple weeks for me. Hunter does sell caps like this, but my local HW store did not carry them.

Note: The mating threads are very fine. 5/8 - 28 UN seemed to work in this design. Due to the way my printer prints, to get this cap to thread on, I needed to set the X-Y Hole Compensation feature in the slicer to 0.2mm. You may need to make a similar adjustment when slicing. After printing, I took an exacto knife and cut a very small chamfer at the thread opening. This helped to get the cap's threads started on the pop-up, and avoid cross-threading. Be careful and take your time when you install it.