PGJ Gear-Drive Rotor Sprinkler with 2.0 Nozzle

A:  Thank you for your question about the Hunter PGJ-04 rotors! The PGJ Series of rotors are not a good replacement for the Hunter PRS30 spray bodies unless all the sprinklers on the entire zone will be changed. While the PGJ body is the same approximate physical size of the PRS30 body, the application rate of water to the landscape is completely different! The PRS30 bodies have two key ways they are used: 1) They generally use spray pattern nozzles that have a radius range that can be varied from 5’-17’ with a wide range of flow rates, depending on the nozzle selected, and 2) They have an internal pressure regulator that reduces the incoming pressure down to 30 PSI, which is what spray nozzles generally need to perform most effectively. And in several states a pressure regulated sprinkler is required to be used whenever spray sprinklers are installed. The spray nozzles that are used generally apply water at a rate of 1.5 inches per hour. The PGJ rotors are shipped with a 2.0 nozzle that has a radius range of 20’-25’, which is far longer than a spray nozzle. And when this sprinkler rotates it generally applies water at a rate of only .4 inches per hour, far less than a spray nozzle. So, if you install only one PGJ sprinkler in place of the PRS30 spray sprinkler, it will likely result in spraying water too far for your application, and it would apply that water so slowly that the landscape in that area would not get enough water. I would encourage you to not change only one PRS30 for a PGJ sprinkler.

A:  Thanks for your question about the Hunter PGJ sprinkler! Yes, the PGJ is a perfect replacement choice to replace other manufacturer’s similar sized rotors! It has a 1/2” inlet, it’s nearly identical in overall height, and the 2.0 nozzle will provide comparable coverage, all the while benefiting from over 40 years of Hunter’s proven reliability!

A:  1/2”

A:  There are a few things that it may be! Maybe there is debris inside the sprinkler, allowing water to pass by the riser seal? Maybe there is a small leak in the threaded connections below the sprinkler? If you dig around the sprinkler, exposing more of the top, then operate the sprinkler, it's likely that you will be able to see where the water is coming from.