Convert existing 1/2 in underground sprinkler systems to low flow watering where a drip circuit can't be set up. Adjustable bubblers are available in stream spray with a maximum spray diameter of 3 ft at 30 psi or for finer water droplets, a fan spray, with spray diameter up to 13 ft at 30 psi. Bubbler flow rates are adjustable from 0 to 13 gph at 30 psi for stream type and from 0 to 24 gph at 30 psi for the fan spray. These features allow the higher flow rates required when watering large and small plants on the same circuit.