Simple Ways To Cap Off A Sprinkler Head - WikiHow

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Terms of Use wikiHow is where trusted research and expert knowledge come together. Learn why people trust wikiHow How to Cap Off a Sprinkler Head Co-authored by Tony Hoang

Last Updated: February 18, 2026 Fact Checked

  • Installing a Flat Sprinkler Cap
    • |
  • Capping with PVC Pipe
    • |
  • Video
    • |
  • Expert Interview
    • |
  • Things You'll Need
|Show more |Show less X

This article was co-authored by Tony Hoang. Tony Hoang is a Landscaper and the Principal at H&J Landscaping & Concrete Contractor in Newark, CA. With over six years of experience, he specializes in designing the perfect concrete driveways & backyard patios for homes. H&J Landscaping & Concrete Contractor is a 4.5-star business on Yelp. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 245,585 times.

If you have sprinkler heads that are too close together or want to prevent overwatering in a certain area, you may want to cap a specific sprinkler head. To cap a sprinkler head, you'll have to remove the existing sprinkler cap and replace it with a flat cap that will prevent water from flowing into that head. You can also completely remove the sprinkler head and cap it with a PVC pipe cap.

Steps

Method 1 Method 1 of 2:

Installing a Flat Sprinkler Cap

  1. Step 1 Find or purchase a sprinkler cap or plug that is compatible with your system. 1 Find or purchase a sprinkler cap or plug that is compatible with your system.[1] Your sprinkler system should have originally come with the flat plastic caps or plugs that fit over your sprinkler head. These caps plug up the water and prevent it from being dispersed on your lawn or garden. If you can’t find the cap that came with your system, you may be able to purchase it on the manufacturer's website or at a hardware store.
    • Each sprinkler system will use a different sized cap, so it's best to find one made specifically for your system.
  2. Step 2 Turn off the... 2 Turn off the water to the sprinkler system. Locate the valve that controls the water that pumps through your sprinkler system and turn the valve clockwise to turn off the water. This will prevent water from flowing out of the system while you cap the sprinkler head.
    • The shut-off valve for your sprinkler system is typically on the side of your house.
    • Shut-off valves on sprinkler systems are usually blue.
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  3. Step 3 Clear the dirt around the sprinkler head. 3 Clear the dirt around the sprinkler head. Use a gardening shovel to dig a 1–2 in (2.5–5.1 cm) hole around the sprinkler head. Set the dirt on the side so that you can use it later to refill the hole.
    • Clearing the dirt from the top of the sprinkler head will ensure that it doesn’t enter your system when you unscrew the head’s cap.
  4. Step 4 Remove the cap from the sprinkler head. 4 Remove the cap from the sprinkler head. Turn the top of the head counterclockwise to remove the cap.[2] If you can’t remove the cap, use a pair of pliers to loosen it. Continue unthreading the top of the sprinkler head until it’s removed.
  5. Step 5 Screw the new cap onto the sprinkler head. 5 Screw the new cap onto the sprinkler head.[3] Place the flat plastic cap made for your system over the threads on the top of your sprinkler head. Turn the cap clockwise to tighten it.
  6. Step 6 Refill the hole and turn on the system. 6 Refill the hole and turn on the system. Turn the water supply valve counterclockwise to turn the water back on. Turn on your irrigation or sprinkler system and examine the sprinkler head you capped. No water should be coming out of it.[4]
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Method 2 Method 2 of 2:

Capping with PVC Pipe

  1. Step 1 Turn off the valve to the system's water source. 1 Turn off the valve to the system's water source. Turn the water valve connected to your sprinkler system clockwise to turn it off and cut off water flow. Typically, this valve will be blue and located on the side or back of your home.
    • If you don’t turn off your water, it may spray out of the system when you remove the sprinkler head.
  2. Step 2 Dig a 5–6 in (13–15 cm) deep hole around the sprinkler head. 2 Dig a 5–6 in (13–15 cm) deep hole around the sprinkler head. Use a gardening shovel to create a hole around the sprinkler head. Set the dirt on the side so that you can use it later to refill the hole.[5]
    • Removing the dirt around the head allows you to access and remove the sprinkler head easier.
  3. Step 3 Unscrew the sprinkler head. 3 Unscrew the sprinkler head. Make sure your hole is deep enough so that you can see the base of the sprinkler head. Grab the long stem of the sprinkler head and turn it counterclockwise to loosen it from your sprinkler system tubing.
    • You can use the extra sprinkler head to replace a broken sprinkler head or use it in another location along your system.
  4. Step 4 Screw a PVC pipe cap directly onto the system. 4 Screw a PVC pipe cap directly onto the system. Purchase a PVC pipe cap that is the same size as the pipe in your sprinkler system. Place the cap on the threads that the sprinkler head was screwed into. Rotate the PVC pipe cap counterclockwise to secure it onto the system.[6]
    • Screwing a PVC pipe cap onto your sprinkler system will turn off that specific sprinkler head.
    • Typically, sprinkler systems use 1⁄2–3⁄4 in (1.3–1.9 cm) pipe.
  5. Step 5 Fill the hole with dirt and turn on the system. 5 Fill the hole with dirt and turn on the system. Go back to the valve and rotate it counterclockwise to turn the water supply back on. Access your sprinkler system controller to turn the system. No water should be coming out of the sprinkler head that you capped.[7]
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Things You’ll Need

  • Gardening shovel
  • Sprinkler head cap or 1⁄2–3⁄4 in (1.3–1.9 cm) PVC pipe cap
  • Wrench (optional)

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Expert Interview

Thanks for reading our article! If you'd like to learn more about sprinkler heads, check out our in-depth interview with Tony Hoang.

References

  1. ↑ Tony Hoang. Landscaping Manager. Expert Interview
  2. ↑ Tony Hoang. Landscaping Manager. Expert Interview
  3. ↑ Tony Hoang. Landscaping Manager. Expert Interview
  4. ↑ https://youtu.be/ZDryrV1Ftu8?t=144
  5. ↑ https://youtu.be/YumNPVjxgY0?t=7
  6. ↑ https://youtu.be/vwwEEkyFhOU?t=17
  7. ↑ https://youtu.be/ZDryrV1Ftu8?t=144

About This Article

Tony Hoang Co-authored by: Tony Hoang Landscaping Manager This article was co-authored by Tony Hoang. Tony Hoang is a Landscaper and the Principal at H&J Landscaping & Concrete Contractor in Newark, CA. With over six years of experience, he specializes in designing the perfect concrete driveways & backyard patios for homes. H&J Landscaping & Concrete Contractor is a 4.5-star business on Yelp. This article has been viewed 245,585 times. 82 votes - 82% Co-authors: 6 Updated: February 18, 2026 Views: 245,585 Categories: Home and Garden Article SummaryX

If you have sprinkler heads that are too close together and want to prevent overwatering in a certain area, cap off the head by replacing the existing cap with a flat one. First, get a sprinkler cap or plug that is compatible with your system. Once you have the right cap, turn off the water to the sprinkler system and dig a 1 to 2-inch hole around the existing sprinkler head. Turn the top of the sprinkler head counterclockwise to remove the cap, then screw the new, flat cap onto the head. Refill the hole with dirt, and turn the water system back on. To learn how to cap your sprinkler head with PVC pipe, keep reading! Did this summary help you?YesNo

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Reader Success Stories

  • Kim

    Kim

    Jul 5, 2022

    "I didn't really know anything about sprinkler systems, thanks to your article I was able to cap 3 sprinklers..." more
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Did this article help you?

Yes No Advertisement Cookies make wikiHow better. By continuing to use our site, you agree to our cookie policy. Tony Hoang Co-authored by: Tony Hoang Landscaping Manager Co-authors: 6 Updated: February 18, 2026 Views: 245,585 82% of readers found this article helpful. 82 votes - 82% Click a star to add your vote Kim

Kim

Jul 5, 2022

"I didn't really know anything about sprinkler systems, thanks to your article I was able to cap 3 sprinklers..." more Share yours!

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Tag » How To Cap A Sprinkler Head