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<br />Range: <br />'Y Range ofDU for spray zones: 10% - 90% <br /> <br />'Y Range ofDU for rotor zones: 9% - 96% <br /> <br />Pressure Readings <br /> <br />The desired pressure range for spray zones is 20-30 PSI. However, certain brands are <br />able to function on slightly higher pressure, particularly if they have a Pressure <br />Regulating Stem or PRS because they can compensate for the higher incoming pressure. <br />We have found that typically the maximum pressure that a spray head can operate <br />efficiently at is 50 PSI (given the brand can compensate for slightly higher pressure). <br />The desired pressure range for rotor zones is 40-70 PSI. However, some newer <br />residential models allow for rotors to operate at pressure levels between 30-40 PSI. In <br />both head types, if the pressure is too high it will cause the heads to emit mist, but if the <br />pressure is too low, the heads will not be able to cover the desired area. <br /> <br />Sprays <br /> <br /> 0/0 Spray Zones 0/0 Spray Zones 0/0 Spray Zones <br />Property Type With Correct With High With Low <br /> Pressure Pressure** Pressure <br />Residential (338/1232) (782/1232) (112/1232) <br />27.40/0 63.50/0 9.10/0 <br />Large Audits ( 1 2/1 0 1 ) (86/101) (3/101 ) <br />11.90/0 85.10/0 3.0010 <br />Total (350/1333) (868/1333) (115/1333) <br />26.30/0 65.1 0/0 8.6010 <br /> <br />4 <br />