Your irrigation system should continue working for several seasons without issue. However, eventually, issues related to wear and tear may require you to repair or even replace some of the components. The good news is, in many cases, it is as simple as replacing a few sprinkler heads to restore the system to full working condition.
Keep reading to learn some of the most common reasons you may need to replace your sprinkler heads.
Sprinkler Heads Don’t Pop Up or Retract Properly
Modern, pop-up sprinkler heads are designed with springs that push them up or pull them back into the ground. It depends on the amount of water pressure present. In some situations, sand can become trapped in the gap between the riser stem and the cap or the sprinkler, which causes the head to jam.
You can do a few things to fix a sprinkler head that is not retracting, or that is only popping up partially. The first step is to turn the sprinkler system on and push the head with your foot (gently) so the head is pushed all the way into the body. Then release it, so it pops back up. Do this four to five times, loosen and flush the sand caught between the cap and riser.
If this doesn’t fix the issue, turn the water off and attempt to pull the riser up using your hand. You should feel some resistance because of the retraction spring; however, the riser should move up and down easily without catching or getting hung up. In some cases, the riser and seal will get so scratched by sand that the roughened surface keeps the riser from moving up and down smoothly. In this situation, the only way to fix the problem is by replacing the sprinkler head.
Excessive Blow-By from the Sprinkler Riser
The term “blow-by” refers to the small amount of water that will squirt through the gap between the cap and riser stem when the riser pops up. It’s normal to have a small amount of blow-by, as this cleans grass and dirt off the riser as it pops up or down. It also helps to lubricate the seal. Sometimes issues can occur during winter that cause cracks or other issues that make this problem worse. However, if too much water is squirting out, the sprinkler head will have to be replaced.
Head Too Low in the Ground
If a sprinkler head is too low in the ground, it won’t be able to rise far enough to water the grass and nearby plants. This can lead to coverage issues and flooding near the heads. Also, dirt is much more likely to get into a sunken sprinkler and cause failures. If this happens, replace the sprinkler, and install one that is at the appropriate height.
If you need help figuring out what is going on with your sprinkler heads, call the professionals. They can provide a full inspection and recommend the best way to repair the issue. Keeping your sprinkler system working properly will help ensure your lawn and garden remain healthy.
