Spec Sheet Rain Bird 1300 Series Flower Bubblers provide a controlled, gentle umbrella of water for irrigating trees, flowers and shrub areas. Mount these bubblers on 1/2" male risers to effectively water areas from 1' to 3'. 1300 Series Bubbler Features Include: Full circle pattern only. Stainless Steel adjustment screw regulates flow and radius for spacing between from 1 to 3 feet (0.3 m to 0.9 m) apart. Fully adjustable flow. Shipped with SR-050 1/2" (15/21) inlet filter screen for easy installation and resistance to debris. Operates over a wide range of pressures. Non-corrosive plastic and stainless steel construction for long life. Specifications: Flow-by: 0 at 8 psi (0,6 bar) or greater. 0.10 gpm (0,02 m3/h; 0,006 l/s) otherwise. Specifications: Inlet Size: 0.5 Inlet Thread: Female Threaded Flow Control: 1.0 - 2.3 GPM Pressure Rating/Range: 10 - 60 PSI