Lots of questions. Please bear in mind that some expressions may not 'internationalize' very well.
Mine or any replies.
I'm assessing the MP Rotators for this place:
My tentative layout looks like this:
A mix of three, two and one thousand series. The header pipe will be under the deck of the house,
on the surface, with laterals heading up the page, as you look at it. It's a very stony area, so I'm
planning to use 4" pop-ups, running off 5 x 1" thin-wall alkathene laterals.
The bare dirt areas are to have trees dotted around. Although the area gets grass frosts, ground
freezing doesn't occur. The area dries out easily in summer. Irrigation will be mainly at night.
Any controlling will be done by a timer at the pump. I.e. ON/OFF only. There are other zones
already installed, such as woodlots, using microsprinklers. These can use any surplus pumping
capacity, to keep operating pressure circa 2.25 bars, at the pump.
Anticipated operating pressure in 30 PSI. The 4" semi-positive displacement submersible pump
down the well is capable of 7000 litres per hours @ circa 90 PSI. Volumes go up as pressure goes
down. The supplier was vague, saying that over 10,000 LPH was likely at pressures in the 30-40
PSI range.
The layout above is very approximate. Please let me hear your observations and comments.