I placed RainBird U series head sprays, Noz 10, and after sizing the valve, only the full heads showed polylines(Think it is the coverage area)
how can I fix this?
Nibal,
Unfortunately I can't see much in that photo. Sending in your files using the Tech Support tools would be ideal so we can poke around and see what might be causing this. I know you have had this issue before but with other emission types, and the fix seemed to be with setting proper Z elevation values and Rotation values, then resizing your laterals.