Valve Stuck and Constantly Running
If your sprinkler system is connected to city water, or has a pressure tank then it is a constantly pressurized system. On pressurized systems, when a valve sticks open, then that zone will run continually until the main water supply to the system is shut off and the valve is fixed.
The electric valves that stick open can normally be fixed by replacing the diaphragm. The other possible causes of a valve that is constantly on is that the solenoid is loose, overtightened, or mis-threaded. The electric timer could also be sending 24 volts continuously and in this case you would have to replace the timer or maybe just a module depending on the model of timer, and if the problem is with the whole circuit board or not.
If you think that you have a stuck valve, just locate the main water supply shut off to the system and turn it off. If you are on a city water system, you should have a back-flow with handles or ball valves that you can shut off. If your system is on a well & pump, then you most likely have a ball valve or gate valve shortly after the pressure tank that will allow you to cut off the water supply to the irrigation system. Then determine which valve is the stuck valve and buy a replacement diaphragm or whole new valve. Replace the valve, or parts and then turn the water supply to the system back on to test.
Good luck and have a great day!
Scott
http://www.autolawnsprinklers.com
The electric valves that stick open can normally be fixed by replacing the diaphragm. The other possible causes of a valve that is constantly on is that the solenoid is loose, overtightened, or mis-threaded. The electric timer could also be sending 24 volts continuously and in this case you would have to replace the timer or maybe just a module depending on the model of timer, and if the problem is with the whole circuit board or not.
If you think that you have a stuck valve, just locate the main water supply shut off to the system and turn it off. If you are on a city water system, you should have a back-flow with handles or ball valves that you can shut off. If your system is on a well & pump, then you most likely have a ball valve or gate valve shortly after the pressure tank that will allow you to cut off the water supply to the irrigation system. Then determine which valve is the stuck valve and buy a replacement diaphragm or whole new valve. Replace the valve, or parts and then turn the water supply to the system back on to test.
Good luck and have a great day!
Scott
http://www.autolawnsprinklers.com
posted by Irrigationman at
8:23 AM
