A broken or aging sprinkler valve diaphragm seal only gets worse over time. Here are the steps we follow to fix a sprinkler valve leak:. It is extremely important that you leave this type of job to an expert.
The most common reason why water leaks through a valve is because there is debris obstructing the valves diaphragm. If the zone valve for that particular station is diagnosed as the problem then the solution is: disassemble the valve rinse all the parts with clean water re-assemble the valve.
You may need to replace the diaphragm assembly if there is visible damage. FAQs , Troubleshooting , Video. You might find yourself double-checking your sprinkler schedule if you find that one head or zone that appears to be running when the system is supposed to be off. If the system really should be off, you have a leak on your hands.
One reason a sprinkler system may leak when it is turned off is that the grading of your ground or system places one sprinkler head deeper than the others. The water from the rest of the line then runs down towards that sprinkler head and leaks out the top. If this is your problem, the sprinkler head will leak every time the system is turned off. However, it will stop a few minutes later after all of the water is released because no new water is added to the system.
If the leaking sprinkler is at the bottom of a slope, however, cleaning may not work, because the leak is likely caused by water draining down the hill. In this case, you will need to replace the sprinkler heads with heads containing check valves to stop the drainage. Clean out the nozzle by inserting the end of a paperclip into the nozzle hole and clearing any debris. Turn the water on and let it run for about two minutes to clear any debris from the line before replacing the sprinkler head.
Skip this step if you do not have a rotor head. Open the valve cover and rinse any mud from around the valve. Pat the valve and box dry with a towel.
Twist the solenoid, the black cylinder with the wires on the top, from the valve.
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