Full Product Manual

Page 10 Chapter 3
This section of the form is for identifying the site, recording information about
the owner and making notes about local requirements for permits and system
specifications.
In this section of the worksheet, check off the type of water source (city water,
well, surface water, or effluent). If a pump is used, indicate the type and its
specifications. For all water sources, indicate the quality of the water based on
the amount of particulate matter present. Fill in the meter size, location, and
static water pressure (measured at the meter). Then fill in the information about
the service line.
“Dirty” water can be a problem for low-volume systems because of the compo-
nents’ small orifices. Plan to include filters in your low-volume system to screen
out particulates from the water before they become a problem. Table 3-1 shows
minimum filtration required for most emitters.
If your water is dirty or contains organic contaminants, consider installing a sand
media filter in your system. Hard water may need to be chemically treated to
prevent mineral buildup that could clog emitters. If clogging is a concern, instead
of emitters use Xeri-Bubblers, which have larger orifices and can be easily taken
apart and cleaned. Contact your Rain Bird distributor for more information about
specific filtration requirements.
On commercial systems using water that does not contain organic contaminents,
it is cost-effective to install a Rain Bird Automatic Filter Kit near the point of
connection (see Figure 8-7, Chapter 8). The 150 PSI rated kit is available in 1", 1-
1/2" and 2" sizes and consists of a Y-Filter, a Rain Bird PESB scrubber valve,
which acts as an automatic flush valve, and fittings. Various screen sizes from 30
to 200 mesh are available to meet the needs of a variety of applications. When
the “scrubber” valve is connected to a multi-program irrigation controller such as
the Rain Bird ESP-LX+ or ESP-MC, a flush cycle can be programmed to virtually
eliminate the need to routinely clean the filter manually.
It is always best to include the appropriate filter in your drip system design, even
when using potable water.
➋ Water Source
➊ Site
Information
In many cases, you can call your local water purveyor for information about the
water source. The water purveyor should be able to tell you the meter size (if
there is one) and the cost of water. The water purveyor may also provide a water-
quality report and help you understand it. However, measurements of static
pressure and water quality should be performed on-site whenever possible.
0.5 GPH 1.0 GPH and larger
Landscape Dripline 0.6
and 0.9 GPH
TABLE 3-1: MINIMUM FILTRATION REQUIREMENTS
200 mesh
75 microns
150 mesh
100 microns
120 mesh
125 microns
®