What does high pressure look like? Here is a picture of a system with zone pressure measured at 85 psi. Pop-up sprays are intended to operate at 30 psi. If you have this situation, you can retrofit with pressure regulated heads, install a pressure regulator on the valve (such as Hunter AccuSync on any Hunter valve), Rain Bird PRS Dial (fits only PGA or PEB commercial valves), or a pressure reducing valve on the entire system
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Look at that mist 