Replace Stem Disc Index Valve
I dug up another video for a very common repair task that you may run into. Not all automatic irrigation systems use electric valves to separate zones. Some systems use a part called an "index valve." This video shows how to replace the stem and disc in a common type of index valve.
In very first part of this clip I show you a typical stem and disc. Then we cut to my old business partner Sean describing and showing the entire process of replacing the stem and disc. It really is very simple and the material cost about $20. However, when you call a professional irrigation company they have to charge you for the service to help cover their business overhead and make profit. So, if you choose to do this repair yourself, you should save some good money.
An index valve is a fairly simple mechanical part that allows sprinkler operation to send water to one certain zone or section at a time, while blocking off the flow of water to the other zones. This type of system setup is different from electric valves in a couple different ways.
First of all they contain no electrical components, unlike an electric valve which has a 24 volt solenoid. The stop and start of the flow of water is what causes the stem and disc to switch between the different zones. On an irrigation system like this the pump is normally activated by a pump start relay contained inside the controller or timer. Some simpler setups may just have a switch to turn the lawn pump on and off.
Scott
Irrigation Systems
In very first part of this clip I show you a typical stem and disc. Then we cut to my old business partner Sean describing and showing the entire process of replacing the stem and disc. It really is very simple and the material cost about $20. However, when you call a professional irrigation company they have to charge you for the service to help cover their business overhead and make profit. So, if you choose to do this repair yourself, you should save some good money.
An index valve is a fairly simple mechanical part that allows sprinkler operation to send water to one certain zone or section at a time, while blocking off the flow of water to the other zones. This type of system setup is different from electric valves in a couple different ways.
First of all they contain no electrical components, unlike an electric valve which has a 24 volt solenoid. The stop and start of the flow of water is what causes the stem and disc to switch between the different zones. On an irrigation system like this the pump is normally activated by a pump start relay contained inside the controller or timer. Some simpler setups may just have a switch to turn the lawn pump on and off.
Scott
Irrigation Systems
posted by Irrigationman at
1:29 PM
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