Irrigation system for a large (still) empty plot

You wanted to turn twice. It is important to use as few 90° angles as possible. You can also install the pre-filter somewhere completely different. Use PE for it. The fittings are available in all kinds of variations. So, for example, fitting directly on the filter or a piece of HD pipe in between.

Then we misunderstood each other:

Presscontrol -> metal cone fitting -> 90° -> T-piece -> filter -> PE fitting -> PE pipe
The T-piece is only to place the valve on the middle outlet.

I would do the 90° and the T-piece in metal because the valve (which I already have) is also metal.
Then the question is whether I can simply screw the filter into the metal T-piece.

The intermediate pieces with the union nuts were only intended to make it easier to remove the filter if needed.

I still think a HD pipe piece in between takes up too much space. And the filter somewhere else. That actually makes sense there because I then distribute to the individual valve boxes.

You write prefilter. That suggests that another filter comes afterwards. Actually, it should stay with just the one? Do I need another filter?

I would have no problem screwing the metal tap into a plastic fitting. You only need the one filter. Just call it a pre-filter since it is at the beginning of the system. Other filters are in the sprinklers but are much coarser.

So. Meanwhile, the paving work is completed and shortly before the deadline we decided for optical reasons on "rounded corners." It looks stylish, but is now extremely unfavorable for irrigation. How is this best handled? I have to say that in the neighborhood we have several wells and at one I know that very iron-rich water is extracted. Not at mine so far, but that can all still change (the pump hasn't extracted much yet). Therefore, I would like to avoid watering the paved surfaces, house, garden shed, etc. as much as possible.

Now I am adapting the planning:



I hope the drawing is somewhat recognizable. So at the bottom is the street, above the house or garage. In the middle the driveway, to the right the path to the front door. To the left leads the path to the -yet to be built- wooden shelter.

Area 1: Here I include the bed in irrigation at the top two corners, which is not a big deal. (Bed is the surrounding strip from the driveway to the path, 50 cm in width) Unfortunately, the two lower corners are not overlapping. With the two MP2000 I would have room to enlarge the radius (currently 4.2 m), but then I would reach the paved surface at the top on both sides.

Area 2: Very difficult. The curve at the top has a radius of about 1.9 m. Here I am completely at a loss as to how to best irrigate this. Currently I have a gap of about 50 cm there.

If you want to define it quite precisely, you need several small sprinklers along the boundary. The water requirement in the circle balances out, only the material usage increases. Placing a sprinkler in the area and trying to water the radius evenly almost never works.

So far, I have only planned the MP1000, MP2000, MP3000, and MP side strips, as well as an MP Corner. Nothing fits the curve with a 1.9m radius. Hunter also has the MP800SR. It has a throwing distance and thus a radius from 1.8m to 3.5m. That would fit perfectly to water the curve for me. However, it delivers 20mm/h, which is about twice as much as the other sprinklers in the circle. But that shouldn't be too serious, right? Oh yes, there is also a slope of about 10-15% in that area. How does that actually affect the irrigation? I haven't seen any information about that yet. Because of that, the throwing distance should decrease, shouldn't it?