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Its a jet pump and works on sucking the water up Not pushing. The labeling is totally false. You don't get a deep well pump and 4 inch boar for 12 to 15 k.
Heard you the first time!
The pump both pushes and sucks - there are 2 connections to the bore. It is a special pump with 1" pipe capacity for deep wells (mine is 44 metres deep)
I never said I had a 4" bore. Mine is 1", which I said in post no 14. A 1" bore is perfectly adequate for my domestic needs. The village water supply, which caters for some 3/400 houses (other than those with bores) feeds round the village in 3" pipe! When the water is turned on (which it often is not) the pressure is adequate.