Teamo
Member
I have Hunter rotary heads. I installed the system myself about 5 years ago. One of the things that I have always questioned about my nozzle selection was the gallonage output on each individual head. At the time that I set them up I installed 2 gpm nozzles on the heads that do a full circle and for 3/4th circle patterns I used 1.5 gpm nozzles. On the sides along walkways I used 1 gpm, in the corners I used .05 gpm nozzles. I had read that the reason for doing this is because you are only using half of the area for a half circle so only one half the gallonage is needed, the corners are only one quarter, etc. I have noticed that I having some brown patches at some parts of the yard. I know this could be due to lots of variables such as bugs, grubs, soil type, etc, but should I increase the gallonage on some of the lower output heads? Do most people use different gallonage nozzles for different areas or the same for every head in a zone? I did a calculation when I was designing the system and I have about 15 gpm available. I put 5 or 6 heads per zone so even @ 2gpm output per head/per zone I would still have 3 gpm residual leftover.