About
The 7750BB Micro Mist Sprayers on 12/24 large threads spray a full-circle, fine-mist flat pattern to a maximum diameter of
7.2' with a flow range of 5.3 to 7.4 GPH at 25 to 50 PSI. They are available in a one-piece construction that includes thread to
connect into micro tubing, directly to the drip tubing, or to extend using a PE riser. Use the mist sprayers where overhead
watering is suggested on any type of planting, including vegetation that requires moisture, flowerbeds, seed germination, in
planter boxes and for large pots.
For complete coverage of an area, the recommended spacing is 3’ to 5’ between each micro spray head to a maximum
distance of 99' to 135’ in length using 1/2” drip tubing as the main lateral. Like micro sprinklers, these micro mist sprayers
operate at low pressures and require a filter to protect the water passages of the sprayer. The main advantages of the micro
mist sprayers are their small size, lack of moving parts and fine droplets, allowing them to fit in any area.
Micro sprayers are an efficient and reliable method for applying water. To cover densely planted areas, place the micro
sprayers close together in rectangular or triangular spacing for good overlapping irrigation and better uniformity. Do not use
them in windy areas as their small-sized droplets can be easily dispersed in the air, even under low-to-moderate wind
conditions, adversely affecting uniformity. A main advantage of low-flow micro irrigation is that a relatively large number of
micro sprayers can operate simultaneously with a small pipe.
Installation suggestions
Basic installation recommendations for this product 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 and two to four start times per day for added flexibility.
Start the installation from a PVC pipe or to pipe thread
1. If the system installation is started from a PVC pipe, first shut off the main water supply.
2. 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.
3. Turn the water supply on to flush the line and then shut the water supply off using the new ball or gate valve.
4. Install an AC valve or battery operated controller, wrapping TEFLON tape on all the male thread fittings used.
5. Turn the water supply on again to pressurize the system. The unit will open momentarily and then will shut
off.
6. Test the valve or the battery operated controller and make sure that it is working correctly.
