Yes, you can have any mix of rotors (any brand or any model rotor) on the same zone together as long as you match the precipation rates. Anotherwords, you just need to use a nozzle in the PGP-ATR rotor that matches the water output of the Maxi-Paw rotor. If the Maxi-Paw rotor is applying 3 gpm (very common) then use a nozzle for the PGP-ATR that outputs 3 gpm. The PGP-ATR rotors come with a complete set of nozzles (if you purchase them from
www.SprinklerWarehouse.com) so you can use the one you need to match the Maxi-Paw water output.
The PGP-ATR was designed and built to replace the Maix-Paw rotor. In fact that is the only thing it can be used for. The PGP-ATR is a PGP Rotor that has the threads on the bottom of it to allow it to be screwed into a Maxi-Paw canister base after you remove the MAx-Paw rotor guts from the canister or body in the ground.
To help you figure out how much water your Maxi-Paw or PGP-ATR rotors are outputting here are nozzle charts below:
<b>Maxi-Paw Nozzle Chart & Performance Data:</b>
http://www.sprinklerwarehouse.com/ProductDetails.asp?ProductCode=2045A%2D08&Show=TechSpecs
<b>Maxi-Paw Rotor Instruction Manual:</b>
http://www.sprinklerwarehouse.com/manuals/rainbird/rotors/ts_Maxi-Paw.pdf
<b>PGP-ATR Nozzle Chart & Performance Data:</b>
http://www.sprinklerwarehouse.com/ProductDetails.asp?ProductCode=PGP%2DATR&Show=TechSpecs
<b>PGP-ATR Rotor Instruction Manual:</b>
http://www.hunterindustries.com/Resources/PDFs/Instructions/Domestic/lit258w.pdf
<b>PGP-ATR Rotor Product Manual:</b>
http://www.sprinklerwarehouse.com/manuals/Hunter/Rotors/lit213w.pdf
I hope this helps.