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Originally Posted by NoMoSno
Having been in irrigation work for 45 years, I want the filters OUT for "spray" heads, they serve no purpose other than call backs for clogging.
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And allowing the adjusting screw to do what it was designed to do.. adjust the flow at the individual head , as well as keeping some of the larger debris from clogging the spray slot and messing up the desired pattern.
If you have different distances at some heads on the same zone, you need to adjust your flow rate to have a properly tuned system. I would speak with the manufacturer, or one of the experts at Site 1, or Central Pump and Irrigation if you are serious about getting to the truth about your sprinklers.
Though most everyone gets by with a less than perfectly designed and tuned irrigation system, if you are having reoccurring fungus, dry spots or mold on your home , driveway. constant clogging Or a large water bill, find a real expert, like Fertigator (the absolute best tuner of irrig. systems in TV) that isn't disagreeing with the manufacturer by removing parts or turning off your rain gauge.