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What a mess.
The whole thing needs to be redone.
You can't have anti-syphon valves below grade like that. They need to be above ground and 1 foot above the highest sprinkler head.
Does it freeze where your mom lives?
I would replace everything.
Are those new Lawn Genie valve adapters?
I notice the dripline doesn't have a filter on it.
So there's 21 heads on the same line. It must have worked at one time. If there's a problem with the valve or the seals on the old heads I can see where some of them wont pop up. If you replaced the 570's with the new 570's that could be why they don't pop up now. The spring in the new 570 is wayyy too strong. A Rainbird PUP tool wont even hold them up. You could try putting the old springs inside the new heads.
Do you get more pressure if you open the valve with the bleeder screw?
The only way to find where the pipe goes under the sidewalk is with a shovel. Just put the shovel in the ground and tap on the pvc pipe. Go easy. Follow the pipe with the shovel. You'll figure it.
It looks like there's enough wires to add another valve but you might want to make sure there's a spare that works.
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Me again. 21 heads is a lot of heads but not unheard of where I live. Are you sure there aren't two valves coming on at the same time?
This post has been edited 4 times, last edit by "kaseys_dad" (Jun 19th 2013, 6:29pm)