Here's the story! I have an existing sprinkler system drawing off 4 wells spread out all over the place and it got so it was down to just a trickle. Washed down 4 new wells using Brady T-pack & 2" pvc pipe method. I have water table level @ 5' below sod surface. Each well has 2 4' sections of 1 1/4" well point stacked and each well is deep enough to get 9'-10'(+) standing water when a weighted string is dropped. Wells are dug and plumbed in an H pattern with 1 1/2" sch. 40 pvc with the top & bottom of the H being 8' apart and the two legs being 5' apart. Main pipe running from the center of horizontal cross about 7' to 2 HP "Simer" centrifugal sprinkler system pump. Have vertical check valve just before pump intake. When I run this set up in my existing sprinkler system it has great performance for about 5 minutes then starts to surge like it's running out of water. I'm confident about the integrity of all the pvc joints. All the homes around me have the same kind of shallow well set up for sprinkler systems. I find it hard to fathom this system could run out of water and if I had a leak wouldn't it surge right from the start instead of after 5 minutes. The previous set up had a 1 HP Sears 35 years + pump. Is my 2 HP to large maybe and demanding too much water. Also cannot find any open lines in my 2 zone sprinkler system that would cause loss of back pressure. Any insight or suggestions would be appreciated. I’m worn out, my arms and shoulders ache and my mind is totally frustrated. TIA, Valkyrie.
