Did I buy the wrong kind of heads (w/ Check Valves)?
So I'm doing this project by myself and I've done a pretty thorough job up to this point calculating the flow, pressure, figuring out how many zones I'll need to divvy that up, etc... but I think I run into a snag.
I had read that when your lateral line has more than 12" of drop between the highest and lowest head that you should install heads with check-valves on the lowest heads.
Well I just put the heads on the zone and only the heads without the check-valves actually had enough pressure to push water out of the built-in drain-valves. I'm hoping to god that once I put in the actual nozzles it will restrict the flow enough to push up the heads with the check-valves but I'm going nuts here, do I need to return those heads? I'm thinking I might have only needed one per zone, not "all of them"... :sigh: