How to Replace a Solenoid Valve on an Irrigation Sprinkler

Overview

In an irrigation system where each head can be run independent of others, each head has its own control wires and solenoid. The process of changing this solenoid is very similar to changing the solenoid on a control valve. The major difference is the need to make sure that the entire system has no water pressure. If the system has pressure, then when the solenoid is removed, the person changing the solenoid will get wet.

Step 1

Turn off the water supply for the system. Some systems have valves that can turn off certain areas without turning off the entire system.

Step 2

Turn on five heads around the one with the bad solenoid to release pressure from the system. When the heads stop running, the system is ready.

Step 3

Dig around the bad head until the solenoid and wires are exposed. The solenoid on most heads is located directly under the manual control switch on the head. Make sure to expose about one foot of the irrigation wires.

Step 4

Cut the irrigation wires at the direct bury connectors for the solenoid. This will help to ensure a proper connection with the new solenoid.

Step 5

Twist the old solenoid loose from the irrigation head.

Step 6

Twist the new solenoid in place. Make sure the threads are clean before installing the new solenoid.

Step 7

Strip the irrigation wires to expose half an inch of copper. Then connect them to the solenoid with the direct bury connector. Make sure to cap the connections with the supplied wire nuts and push the wire nut all the way to the bottom of the grease tube before closing.

Step 8

Turn the water supply back on and make sure the head runs by the controller. Fill the hole back in around the head.

Tips and Warnings

  • Make sure to turn the water supply off and depressurize the system.

Things You'll Need

  • 2 direct bury connectors
  • Wire cutter
  • Wire stripper
  • New solenoid
  • Shovel
Keywords: irrigation head, irrigation solenoid, solenoid replacement

About this Author

Michael Rippetoe has been writing for 15 years, and has recently decided to make it his career. He has been a journeyman carpenter, ASE Master Mechanic, certified irrigation professional and currently writes for this site, designs websites, and does professional photography. Rippetoe's articles appear on eHow, Garden Guides, AnswerBag and others.

Article provided by eHow Home & Garden | How to Replace a Solenoid Valve on an Irrigation Sprinkler