How to Move a Sprinkler System Line

Well-designed sprinkler systems make it an easy process to keep a residential lawn green. Landscapers arrange the pipes and sprinkler heads in a way that gives full coverage to an entire yard, allowing the recommended amount of water to soak into the ground each week. However, landscaping changes may necessitate moving a sprinkler line after the system has been installed. The process is not very complicated, but it does require attention to detail.

Landscaping changes such as a new flowerbed, pool or pond, may require rerouting irrigation pipes.

Step 1

Lay out the location for the new sprinkler line. Determine which line needs to move and where the new line needs to go. Measure and draw a diagram.

Step 2

Turn the water to the system off.

Step 3

Dig a trench to remove the old line and a trench for the new line. Be sure the location and length of the line will provide enough pressure in the new location. Avoid 90-degree turns as much as possible when moving a sprinkler line.

Step 4

Cut the old pipe where it needs to be moved using a hacksaw or PVC cutters. Place caps on any ends that will no longer be connected to the sprinkler system. Clean the end thoroughly with a rag first, then install the cap with PVC cement and allow it to dry completely.

Step 5

Install the new pipe and fixtures using PVC cement. Consider using telescoping repair fittings for easier rerouting. Be sure to apply cement, put the pieces together, then the rotate pipe 1/4 of a turn and hold in place for 10 seconds to prevent the joints from falling apart.

Step 6

Install any new sprinkler heads in the correct position, if needed.

Step 7

Allow the joints to dry completely, then test the system. If there are leaks, repair and re-test. When there are no leaks and the sprinklers cover the ground correctly, fill the trenches in with dirt. Add seed or sod to the dirt over the trenches.