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Old 11-04-2012, 12:11 PM   #1
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Anti-siphon lid is leaking.


When we moved to the new place few months ago, most of sprinkler valves were old and leaking (whole system is 6 valves).

Yesterday, I replaced all new 6 valves. 5 of them is fine, except one valve is leaking at anti-siphon lid. Read the manual says the anti-siphon must be installed 6 in or higher than the sprinkles. The problem is that valve controls the sprinklers upper the hill (about 8 ft higher than ground).

How would do you guys do in this situation without install that valve 9 ft high from the ground ?

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Old 11-05-2012, 07:29 AM   #2
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Anti-siphon lid is leaking.


How big are the areas for the zones? Why is zone 6 8ft above the valve?

I assume these are electric valves, otherwise I would suggest moving the valve. If they are electric, I assume they are near your house so you can program a timer for the whole system. That would mean a leak in the valve is a risk to the house.

Does the valve leak while zone 6 is on? or does it only leak when it turns off?

If zone 6 is 8 ft above the house, how far from the house is it? Watering an area 8 ft above the house means the water will go downhill (even underground) toward the house. From a termite control perspective, that is not good.

My gut level reaction to your question is to suggest that you re-landscape zone 6 so it does not need a sprinkler zone.

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Old 11-05-2012, 12:47 PM   #3
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Anti-siphon lid is leaking.


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Originally Posted by gobug View Post
How big are the areas for the zones? Why is zone 6 8ft above the valve?

The area is up the hill in my back yard. It is about 150 ft x 15 ft. However, only about 6 fruit trees up there and I watering them via mushrooms sprinklers.

I assume these are electric valves, otherwise I would suggest moving the valve. If they are electric, I assume they are near your house so you can program a timer for the whole system. That would mean a leak in the valve is a risk to the house.

Yes, they are electric valves controlled by the timers

Does the valve leak while zone 6 is on? or does it only leak when it turns off?

It leaks when off so I assume it leaks when on also

If zone 6 is 8 ft above the house, how far from the house is it? Watering an area 8 ft above the house means the water will go downhill (even underground) toward the house. From a termite control perspective, that is not good.

It's a hill and there is the retaining wall so the water is not a problem

My gut level reaction to your question is to suggest that you re-landscape zone 6 so it does not need a sprinkler zone.
I can install the valve 6 on the hill. The big challenge is running the electrical wire. Because there is the retaining wall to retain the hill, don't know how to run the wire through it.
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Old 11-07-2012, 08:40 AM   #4
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Anti-siphon lid is leaking.


I would call a plumber to discuss your options. I believe there are mechanical, non-electric backflow and anti-syphon valves for these sorts of situations.

Each irrigation line does not necessarily need its own backflow preventer so long as there is a master one protecting the water supply.
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Old 11-07-2012, 09:25 AM   #5
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Anti-siphon lid is leaking.


I believe anti-siphon valve won't work in your situation. you will need a double check valve or whatever your area's authority requires in order to stop cross contamination.
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