DIG’s 861-1B Mini Compact Micro Sprinkler on Spike (pack of 1) is an insect-protected micro sprinkler with a 360° spray pattern, completely assembled with a 13″ spike and 24″ micro tubing with a barb. The micro sprinkler frame’s compact design supports the spinner/rotor (without a bridge) for a full-circle pattern. At the end of each irrigation cycle, the spinner is closed, preventing insects from entering the micro sprinkler housing. This large-diameter micro sprinkler has a flow rate of 39.7 GPH at 25 PSI and it provides a gentle and consistent uniformity over a wide area of up to 27’ in diameter. It is ideal for areas where low-volume overhead irrigation is desired and for areas where drip emitters are not practical. Micro sprinklers are a great choice for watering flowerbeds, groundcovers, vegetable gardens and under tree canopies.
Pressure | Micro sprinkler | Flow rate | diameter |
---|---|---|---|
PSI | orifice | GPH | 360° |
15 | brown .071" | 30.7 | 23' |
20 | brown .071" | 35.5 | 25' |
25 | brown .071" | 39.7 | 27' |
30 | brown .071" | 43.4 | 28' |
Micro sprinkler model 861-1B spacing | 12' | 13' | 14' | 15' | 16' |
---|---|---|---|---|---|
Flow rate @ 25 PSI | 39.7 | 39.7 | 39.7 | 39.7 | 39.7 |
Maximum length | 60' | 65' | 70' | 75' | 64' |
Flow rate in GPM | 3.31 | 3.31 | 3.31 | 3.31 | 2.65 |
Flow rate in GPH | 198.5 | 198.5 | 198.5 | 198.5 | 158.5 |
# of mini sprinklers | 5 | 5 | 5 | 5 | 4 |
Head loss in PSI | 3.2 | 3.5 | 3.7 | 4.0 | 2.3 |
Velocity (f/s) | 3.76 | 3.76 | 3.76 | 3.76 | 3.01 |
24" micro tubing head loss in PSI | 3.3 | 3.3 | 3.3 | 3.3 | 3.3 |
Total head loss at the spray head | 6.5 | 6.8 | 7.0 | 7.3 | 5.6 |
The 861-1B is a 360º mini-compact micro sprinkler on a stake with a flow rate of 39.7 GPH at 25 PSI and coverage of up to 27’ in diameter, depending on installation height of the micro sprinkler. This model of micro sprinkler is available as a complete assembly unit with a 13” stake and 24” micro tubing with a barb. It is suggested for use in flowerbeds, groundcovers, seedlings, vegetable gardens, under tree canopies and for dust control. The ideal spacing for full coverage of an area is 12’ to 16’ between the micro sprinklers to a maximum distance of 75’ in length, using 1/2” drip tubing as the main lateral.
To replace the micro sprinkler rotor assembly, pull the head, including the orifice, out of the stake assembly and replace it with a new rotor assembly and the same colored orifice. Make sure to flush the line before inserting the new head and nozzle. No tools or glue are required.
The mini-compact micro sprinkler, with its large diameter, operates with low flow at relatively low pressure compared to conventional sprinkler systems. Low-flow overhead irrigation can be used for areas where drip emitters are not practical, for keeping plant foliage constantly moist or when overhead watering is required. The micro sprinklers apply water to the surface area at a very light precipitation rate and at low tension to the soil, allowing the water to dissipate in a wetted profile that provides high uniformity and reduces plant stress.
Basic installation recommendations for these products include first reviewing the area and then making a drawing of the garden or site with your preferred layout.
If automation is required, use one of DIG’s hose end timers or battery operated controllers. The ideal controller should have flexible scheduling options and two to four start times per day for added flexibility.