Irrigation system for a large (still) empty plot

Ok thanks for the suggestion.

I just wanted to prepare the connection at the pump and then tested it and unfortunately had to find out that it is leaking. Water is coming out at both outlets of the T-piece. Not at the inlet. I then unscrewed the two spots again and resealed them. This time with more Teflon tape. But afterwards it is still not tight. Although only a little water is coming out (fine stream to dripping), that's not enough. Now I noticed that the two parts possibly cannot be screwed far enough into the T-piece. Could that be? I thought if it's 1 inch then everything is compatible. Or do I just need to use more Teflon?

should be compatible. People underestimate how flat the surface is and how tightly it has to be screwed in. If the plug goes in all the way, you also need to wrap the area of the nut (and not just the threaded part) with Teflon. Exceptionally, this really helps a lot here.

I've really used a lot of Teflon now and also started a bit overlapping on the hexagon of the nut. Now it is sealed. Thanks. I hope I don't have to take apart all the other fittings of the valve boxes again.

You will see that then
Feels like it. The same applies to the sprinkler connections. Supposedly everything is self-sealing, etc...
Put in plenty of Teflon and tighten firmly with pliers/hook.

So by now I have installed 3 out of 4 valve boxes, all 3 water cans, and one dripper circuit, and I am currently working on the first sprinkler circuit. Since I had the leak right at the pump outlet, I feared that I would have to reseal everything again on the valve boxes as well. But apparently I used more Teflon there, or the parts actually seal better. Except for one spot, everything was tight.

Now I have 2 more questions:

1. Is it possible to operate only 7 sprinklers on a circuit with, for example, 10 sprinklers? For that, I would have to somehow shut off the remaining 3. I briefly googled and saw that there are special cover caps for this. But I don’t have those. The sprinkler housing comes with a cap at delivery, but that probably won’t hold under pressure, right? Is there maybe some trick to do this temporarily in another way? Like taping the cap on with duct tape, or putting a stone on it so the sprinkler can’t extend?

2. How do I best find out how much water a plant needs? I have now installed the first dripper circuit. It’s about 22 meters for 21 small boxwood bushes, which aren’t really trees but small balls right on the ground. I have the Rainbird XF dripper tubing with 33cm dripper spacing. It gives 2.3l/h — calculated on the 100m ring?! So I now water all my 21 boxwoods with a total of 0.5l/h? How much water does one need? 1l per day now in the establishment phase (they were planted just 2 weeks ago), and later 1l every 3 days? For one liter per plant, I would have to run the circuit for 42 hours. Where is my mistake?

3. How sturdy are the sprinklers actually? What can they withstand? A person — yes. A lawn tractor apparently also goes, I heard that. A car too? Are there any “reliable specifications” for this somewhere?

Regards

Congratulations that everything is sealed.

1. Water also escapes if the sprinkler does not pop up. So placing something heavy on it does not work. The covers that come with the delivery (for PRS40) are for flushing and have a hole. You can also make rough adjustments with them. Whether there are tight covers from Hunter for this, I don’t know. However, the sprinklers will definitely pop up. Alternatively, but not very "nice," would be a shut-off valve in the sprinkler branch. Or you just remove a piece of hose and put an end cap on it.

2. The specification for drip tubing is per meter. Depending on whether you laid rings or multiple strips, you can "calculate" the water output. Don’t make a science out of it. The boxwood will easily manage (with simple installation) 30 minutes per day or 1 hour every two days during dry periods in the establishment phase. Overwatering is not good either since the plants then will not root deeply. Just check the plants regularly and also make a hole in the soil to see how deep the ground is moistened.

3. The sprinklers can withstand quite a bit. Sometimes it can happen that it shifts (which I have never had with PRS40 and Rotator). The sprinklers are not concreted in, so they can give a little under load. People and lawn tractors are no problem. Cars are a different matter. If you have traffic areas, the sprinkler should be installed slightly below level. This way it is not heavily stressed.