Bob from Plains
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I live in the country and am on my own well. I recently installed an underground sprinkler system to my yard and don't get the coverage from the sprinkler heads the manufacturer says I should be getting. When first considering putting in the system the manufacturer asked basic questions such as GPM and pressure at an outside faucet. When I took these readings I did it at the hydrant next to the well, 28 GPM at 28 psi with the well running. The well is a 3/4 HP, and is supplied to the house with 1 1/4" inch black polly pipe , when it enters the basement is is changed over to 1 1/4" galvinized up the wall and across the basement to the pressure tank (well x trol wx 252). At the top of the wall over the entry point there is an 1 1/4" T, I came off the T, reduced to 1" and out the wall to my main manifold for the sprinkler system. I also installed a back flow preventor in front of the manifold. When I didn't get the distance from the sprinkler heads I measured the GPM/ press at the hydrant and the 1" exit from the house. With the pump running and one zone on the hydrand was 28psi, 30gpm, house was 18psi, 18 gpm. I removed the back flow to test the pressure and gpm and pressure went up to 20psi and gpm up to 20. Why is there such a difference on psi and gpm from the house and hydrant? the well is only 30 feet from the house. Any ideas would be greatly appreciated. One other thing I have noticed is almost all sprinkler systems in this area are started at the hydrant, they just come off the hydrand with 1" black polly and into the system, when I asked why the only reply was it was esier than coming out of the house.
Thanks
Bob
Thanks
Bob