Valve Troubleshooting

If you have ever wanted to know how to identify and repair an irrigation valve failure, this training module is for you.  First, the class will cover the operational process of an irrigation valve; with a good understanding of how a valve works, it is much easier to determine why it is not working.  Next, the class covers three primary valve failures: valve won’t open, valve weeps water when closed, valve stuck open.  For each of these failure types, you will see some of the common causes, tips to narrow down those causes, and the repair methods.

Course Outline


Unit 1 Valve components and construction

Unit 2 Valve operation

Unit 3 Valve failure: won’t open

Unit 4 Valve failure: weeping

Unit 5 Valve failure: stuck open

Learning Objectives


Upon completion of this course, students will be able to:

1. Describe the operation of an irrigation valve

2. Identify the differences between a forward flow and reverse flow valve

3. List the three primary failures of an irrigation valve

4. Perform the steps necessary to determine and repair an irrigation valve failure

Suggested Prerequisites


  • Before the class session, each participant should have at least one irrigation valve and the tools required to disassemble that valve. Tools necessary may include a Phillips screwdriver, flat-blade screwdriver, and/or a nut driver or socket and ratchet.