Irrigation第 14 / 100 题
A zone must deliver 18 GPM and the water meter supplies 12 GPM available flow. What is the BEST corrective action?
a.Run all heads longer
b.Increase system pressure to 120 PSI
c.Split the zone into two smaller zones
d.Remove the backflow device
解析
When a zone's demand exceeds available flow, heads will not operate at their designed pressure and coverage suffers. Splitting the zone into two zones that each stay within the 12 GPM supply solves the problem. Raising pressure cannot create flow the meter cannot deliver, and removing the backflow device is unsafe and illegal.
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