Quote:
Originally Posted by Topspinmo
Getting back to the subject of the sand in the head. The ruptured line cause high pressure water to bore the soil causing the mini ground collapse under ground. Now with cavity and fine sand when the pressure dropped the sand worked it’s way into the irrigation line. The next time it came on the sand gets pushed up into the sprinkler head.
My yard is rock, I shut off most pop ups and replaced the line spray nozzles with drippers ( 6 port type ) so I actually water the plants and not the rocks and street. I have no run off, don’t every get street wet, let alone run to street drain. IMO most water too long and most the water runs down the street into drain. I have also noticed over time the heads work loose and leak.
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Your explanation makes a great deal of sense, thanks for posting it.