First post. Pool had line built in to hook to sprinkler system for daily/scheduled filling. I hooked it up on a zone with other sprinklers and it filled as planned. However, the sprinkler system is designed to drain from lowest sprinkler when zone goes off which caused a siphon from pool. I tried a couple of pvc backflow valves which didn't work. It appears i need an anti-siphon valve, but all i'm finding require above ground plumbing (12" above highest sprinkler). Is there a way to solve this problem without above ground plumbing?
Anti-siphon advice
- Thread starter millerph
- Start date
I'd like to see a picture of this setup. Seems to me that if you had an air gap -- the filler outlet stays above the water level -- then it couldn't siphon.
I'm not sure why a check valve wouldn't work. It should only allow water to flow into the pool, but not back out of it. You may need to get a spring loaded one to ensure it closes when there's no forward pressure.