Troubleshooting your irrigation system valves.

Valves
Problem

Cause

Solution

No water at sprinkler head

Main water supply valve is off

 Faulty valve solenoid

 Flow control at valve is closed

 Zone valve wires not connected

 Debris is valve, solenoid or metering orifice

Turn valve on

 Replace solenoid

 Open fully counterclockwise

 Connect wires

 Disassemble valve and clean with fresh water

One or more zones won’t stop watering

Faulty valve diaphragm

 Faulty valve

 Damaged or cracked valve body

 Damaged or cracked bonnet

Replace diaphragm

 Replace valve

 Replace valve

 Replace valve

External water leaks at valve

Damaged or cracked pipe and fittings

 Damaged diaphragm

Check and replace as needed

 
Replace diaphragm

Water leaks from lowest sprinkler zone

Debris between diaphragm and diaphragm seat

 Damaged diaphragm

 Debris in solenoid

 Faulty solenoid

 Valve manual bleed open

Clear debris from valve

 
Replace diaphragm

 Clean solenoid

 Replace solenoid

 Tighten by hand

Article Title:
Troubleshooting your irrigation system valves.
Article Summary:
Problems, causes and solutions for your valves.
Article Date:
11/1/2013
Article ID:
981
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