Hunter HYDRAWISE HC-100-Flow-B m Manual page 5

Planning is an important step in the successful installation of your Hunter flow meter and the reliable
operation of your irrigation system.
3. Flow meter location: Flow meters are installed between the master valve and zone valves. To avoid false alerts,
there should be no water taps or other uncontrolled water use on the downstream side of the flow meter. If all
solenoids connected to the controller are not grouped together, it may be necessary to install more than one
flow meter. For proper installation and optimal water flow, use the chart below when determining pipe length.
The pipe bringing water into the flow meter needs to be 10 times longer than the width of the pipe. The pipe
carrying water away from the meter needs to be 5 times the width of the pipe.
PIPE 10X-BEFORE
20 mm 200 mm
25 mm 250 mm
40 mm 400 mm
50 mm 500 mm
5X-AFTER
100 mm
125 mm
200 mm
250 mm
Note: Measurements in the chart are for
minimum pipe length.
Planning
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