My preference is to use nozzles that throw more water so you don’t need to water as long. Do you really want to run a zone for 1 hour to put down .22 inches of water? Do you want all eight heads to run for 1 hour? If your system has five zones that’s five hours of run time. More zones give you more control of wet/dry spots.
Do you have heads that throw at different degrees? Remember for even water distribution you want the GPM’s of the heads to reflect the radius and degree of the head. For example, if you have all heads of a zone throwing 30 feet radius you would want nozzles with GPM’s to match the degree being used.
90 degree at 2.00 GPM
180 degree at 4.00 GPM
360 degree at 8.00 GPM
I would stick to 4-5 heads per zone; it will give you more control and better options.
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I did the plumbing, did a wet test
(May 19th 2008, 2:51pm)