SPRINKLER TALK FORUM - You Got Questions, We've Got Answers

Is there a set limit i should follow when installing a Rainbird 5000 Plus rotor head. One of my zones, i will probably have to install 3 rotors two 1/2 circle 30' MPR's and one FULL, for a total of 3 rotors wich keeps me well under my GPM's at about 45 PSI of pressure...Just wondering, will having a rotor too close to a valve damage it in any way? Thanks.