Hunter PROS03PRS30 3" Pro-Spray Sprinkler 30psi takes all the rugged and reliable features of the Pro-Spray body and delivers efficient pressure regulation by keeping water pressure at a constant 30PSI. The built-in regulator is proven to reduce water waste and promote healthier root zones, because water is delivered at the optimum pressure for spray nozzles. The PRS30 optimizes performance from the Pro Adjustable and Pro Fixed Nozzles, and is available in shrub, 3", 4”, 6” and 12”, pop-up heights. It is recommended for both residential and commercial applications.