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This post has been edited 1 times, last edit by "intel" (Mar 24th 2012, 2:47pm)
This post has been edited 1 times, last edit by "intel" (Mar 24th 2012, 6:30pm)
Since it's the antisyphon valves providing the backflow protection, they have the elevation requirement, as opposed to the indexer.As mentioned earlier, if you want to keep that indexing valve you need to find the highest sprinkler head and raise it one foot above.
As far as re-working your system and eliminating the indexing valve, take a look HERE. Pictures and info on different types of valve manifolds.
This post has been edited 4 times, last edit by "intel" (Apr 18th 2012, 10:54pm)