how to get multiple sprinklers to activate in pyrosim

If you’re dead set about trying this, you might be able to run one head off of your front hose and spigot while running another head off of the back hose and spigot. Even if you have a 1” garden hose, this amount of water flowing through it would cause friction, and friction causes a loss in psi. So you’d likely be having 14 – 16 gpm flowing through whatever size of garden hose you have.

With the size of nozzle that Marc said that this Gilmour has, I’d guess that at 50 psi you might be looking at 7 or 8 gallons per minute being used by one of these sprinklers. Gilmour states “up to 106 feet diameter”, but this is probably with 60 psi, and if you don’t have that then you’ll get less coverage. And yes, the lawn tractors, lawn trains, may work out better for you – as they did for my neighbors until I installed their own irrigation systems. So… it’s just a guess, and my guess is that for the price of those brass impulse heads, you could do better with something else. Typically, in the irrigation design business, things are calculated out from specific data – which in your case you do not have. Unfortunately you do not have enough information to make an accurate assessment. What Marc said about this Gilmour sprinkler is probably true. I know of no 4 port manifold that can flow enough water to work well. Make sure you use of the hi-capacity Y splitters. They cover about 50% more then 1 would have alone. In fact, I have their width set a bit narrow. I do run two of the above melnors off of one Y, off of one of the dual port timers I mention, so you can do what you mention. You'll need to use 3/4 hose to your downstream Y split.

If you must use 1 spigot, and can't use a rain train or similar moving tractor, the cheap adjustable width plastic melnors home depot seem to work the best on low pressure. Now I get a split at the spigot and can turn it and off by time, so I stagger their run times. Of all I tested I found it to have the least water reduction. They seem to have a better range of products that I needed for width, timing, and low water pressure use. Dual spigots is a LOT better idea then a splitter. I have 45 PSI static, 5 spigots, and can run over 5 gpm each all on at once. Much, and I mean like lots, of it will depend on your internal plumbing.

How to get multiple sprinklers to activate in pyrosim