<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by rain man</i>
<br />Based on your zone flow rates you have 15gpm not 22gpm. You may not need to split, provided your well and pump can deliver at least this amount. Remember that if you are running from a well through a pump w/out a pressure tank, whether you do 15gpm or 7.5gpm,all your zones will need to be approximately the same flow rate to keep your pump from cycling and wearing out. At 15ft. spacing you are borderline of spray heads versus rotors. You will definetly use sprays on the shrubs, I prefer Hunter Pro series with the 8" or 12" risers for shrubs. For the yard it is your call, sounds like you are going with rotors, you'll impress the neighbors more with rotors, but they cost more too. Rotors I use are Hunter PGP or I-20 if the terrain is not level. You can order through sprinkler warehouse.
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Cost isn't too much of an issue right now due to me doing two zones for the time being. How did you arrive at 15 gpm for my flow requirements. Obviously, i must have miscalculated, can you inform me what I did wrong in my calculations?
A little off topic, I'm thinking of getting a Febco 1" PVB backflow device instead of this cheap plastic crap the lowes guy sold me (it will work, don't know how long though). Should I also go with those blazing saddles taps for the sprinkler connections (to tap sched. 40 PVC)? those look really nice.
One more thing guys, no one has recommended what type of rotors to go with for 15' spacing. I really like the new 3500 series rotors that rainbird put out. If advised to, I will go ahead and order these pronto along with the Febco PVB. Thanks again. I'm learning alot.