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AR15.COM
7/18/2015 1:09:33 PM EDT
Our lawn sprinkler system is 48 maxipaw pop ups on 16 valves running as 8 zones.  I need to relocate one head about 15' from its present location.  I dug it up and its feed off of a 1" poly line tapped with a 1" x 1/2" saddle tap.  We are on a well with a 1.5hp variable speed pump.  I don't know what max flow is.  The system pressure is set at 50 psi - with one zone running (6 heads) it drops to 48 psi.

The specific sprinkler is feed with about 18" of 1/2" poly.  I'm wondering if I can just replace the 18" of 1/2" poly with about 15' of 1/2" poly? Or, if for a 15'  run should I replace the tap with a 1" tee and run a full 1" supply to the sprinkler?

ETA: It didn't matter. 1/2" poly works fine.  Plenty of pressure & water at the sprinkler head.  I was concerned about line loss, but at 15' it doesn't seem to be an issue.