- Recommended for under tree canopies, vegetable gardens, seedlings, flowerbeds, and groundcovers.
- The spinner/rotor can be replaced with one of three spreaders with 90 Degree, 180 Degree, and strip spray patterns for a range of applications.
- Double frame design provides balanced coverage with high uniformity.
- Low flow rate.
- Easy to dismantle, clean, and assemble.
Product Description
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DIG's 8855-1GB (in packs of 1) and 8855-5GB (in packs of 5) are
360 Degree micro sprinklers with double frame design, completely
assembled with 13" spike, 24" micro tubing, and barb. The micro
sprinkler's spinner/rotor is balanced between the micro
sprinkler's double frame and the nozzle, providing gentle and
consistent uniformity over a wide area up to 25' in diameter. The
micro sprinklers are a great choice for watering flowerbeds,
groundcovers, vegetable gardens, and under tree canopies. The
micro sprinklers are pre-assembled with a spinner for 360 Degree
of coverage, and interchangeable spreader insert heads are
included in the package for 90 Degree, 180 Degree, and strip
patterns. Start the installation from a PVC pipe or to pipe
thread If the micro irrigation installation is started from a PVC
pipe, first shut off the main water supply. If an automated
system is preferred, we recommend installing a 3/4” ball valve or
gate valve before the battery operated controller or AC valve, if
used. This ball valve can be very useful as an emergency backup
to turn the system off. This type of arrangement is used by
professional installers. Turn the water supply on to flush the
line and then shut the water supply off using the new ball or
gate valve. Install an AC valve or battery operated controller,
wrapping TEFLON tape on all the male thread fittings used. Turn
the water supply on again to pressurize the system. The unit will
open momentarily and then will shut off. Test the valve or the
battery operated controller and make sure that it is working
correctly. If using a battery operated controller, program it.
After the AC valve or battery operated controller, add a 3/4”
screen filter with 155-mesh (model D55). The screen filter is
used to protect the micro irrigation system. Next, add a preset
25 PSI pressure regulator (model D46P) or adjustable pressure
regulator (model PRV075). The pressure regulator is used to lower
the pressure to the suggested operating pressure for a micro/drip
system. Follow with a 3/4” swivel adapter (model 50001) to the
drip tubing or 3/4” PVC thread x slip adapter to the PVC line.
Start the installation from a faucet or hose thread If an
automated system is preferred, install one of DIG’s hose end
timers. Test the hose end timer and make sure that it is working
correctly, and then program it. To the hose end timer, add a
backflow device (model D45), then a 25 PSI pressure regulator
(model D46) and follow with a 3/4" swivel adapter with a screen
(model C34). If water quality is a concern, we highly recommend
using a fine mesh 3/4" filter with 155-mesh (model D57A). Product
installation Use the drip tubing as the main lateral or sub
lateral and lay out the drip tubing per your layout. Secure the
drip tubing to the ground using stakes (model R60). Use the stake
holders to secure the drip tubing or drip line to the ground in
key areas and add more stakes as you unroll the drip tubing. Add
stakes every 10'-20’ and at the end of each section, or as
needed. An extra 1% of drip tubing length should be added to each
lateral to compensate for drip tubing contraction at low
temperature. Throughout the installation and per your drawing
layout, add, if needed, 1/2” fittings, such as tees (model C35)
and elbows (model C36), leaving the end of the drip tubing open.
To install the 1/2" compression drip fittings, cut the drip
tubing with a hand pruner, being careful to keep dirt from
entering the line. Hold the fitting in one hand and the drip
tubing in the other and force the drip tubing into the
compression fitting by wiggling it from side to side. The micro
sprinklers or micro sprayers are installed along the drip tubing
at varying or at specific intervals. The distribution uniformity
of water from the micro sprinklers or micro sprayers along the
line depends on the incoming pressure, number of micro sprinklers
or micro sprayers used per lateral and lengths of the laterals.
Special care should be taken to ensure high uniformity of water
along the laterals by not exceeding the product recommendations.
To install a micro sprinkler, punch a hole into the drip tubing
using the small punch (model D44) or the punch (model
16-035), and snap the 1/4” barb at the end of the micro tubing
into the drip tubing. The micro sprinkler should be elevated to a
minimum of 8” above ground for best coverage. To replace the
spinner/rotor with one of the 90°, 180° or strip pattern spreader
inserts included in the package, review the following steps Step
1: Turn the nozzle assembly with the micro tubing counter
clockwise and remove the nozzle assembly and the spinner/rotor
ed between the double frame and the nozzle assembly Step 2:
Insert one of the spreader inserts with the pin forced to the
location on the double frame housing. Move the spreader insert
into position by turning it left or right Step 3: Insert the
nozzle assembly with the micro tubing and turn it clockwise to
lock 5. Turn the water on and flush the line. 6. Close the end of
the drip tubing using the hose end (model Q58) or figure “8”
(model F68B). 7. Pressure-test the system to identify leaks in
the drip tubing laterals, fittings and barb connections. Make
sure that all the micro sprinklers are standing in a vertical
position and operating with good uniformity, and then program the
hose end timer or battery operated controller.
From the Manufacturer
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About The 8855-1GB and 8855-5GB Micro Sprinklers on Stakes are
available in a complete assembly configuration with a 13” stake
and 24” micro tubing with a barb. They are recommended for
flowerbeds, vegetable gardens, seedlings, groundcovers and under
tree canopies. The ideal spacing is 11’ to 15’ between the micro
sprinklers to a maximum distance of 135’ in length, with 1/2”
drip tubing used as the main lateral. Included in each package
are interchangeable spreader inserts to reduce the coverage to
half, quarter circle or strip pattern. The flow rate is 18.3 GPH
at 25 PSI with coverage of up to 25’ full circle, or a 10’
radius, depending on the assembly of spreader inserts used and
the height of the micro sprinkler. The micro sprinkler design has
the spinner/rotor ed between the double bridge and the
nozzle. The spinner/rotor can be changed by turning the nozzle
assembly clock wise and removing the nozzle and the
spinner/rotor. The micro sprinkler on a stake operates with low
flow at relatively low pressure compared to conventional
sprinkler systems. Low-flow overhead irrigation with a low
application rate can be used for areas where drip emitters are
not practical, for keeping 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. One of the main features
of micro sprinkler irrigation is that it can prevent stress
by maintaining low water tension in the soil, therefore leading
to ier s, by using a low-flow application rate.
Installation suggestions 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.
