Irrigation第 17 / 100 题
A pressure-regulating device is added to a spray head when static pressure is too high. What is the typical target operating pressure for fixed spray heads?
a.About 60 to 70 PSI
b.About 30 PSI
c.About 5 PSI
d.About 100 PSI
解析
Fixed spray heads are designed to operate near 30 PSI; much higher pressure causes misting and fogging that drifts away and wastes water. Pressure-regulating heads or in-line regulators bring high static pressure down to the efficient range. Rotors generally run at higher pressures than sprays.
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