Rain Bird 1400 Series pressure compensating full circle bubblers provide a controlled, gentle umbrella of water for irrigating trees, flowers and shrub areas where pressure compensation is required. Mount these bubblers on 1/2" male risers to effectively water areas from 1' to 3'. Full Circle Bubbler Features Include: Reduces runoff. Flow will not fluctuate at pressures between 20 and 90 psi. Maintains even flow. Flow is not adjustable for increased vandal resistance. No adjustment required. Corrosion-proof plastic and rubber construction for long life. Shipped with special SR-050 1/2 Inch bubbler filter screen for easy installation and resistance to debris. Trickle pattern for the 1401 bubbler nozzle. Specifications: Inlet Size: 1/2" Inlet Thread: Female Threaded Flow Control: 0.25 GPM Pressure Rating/Range: 20 - 90