Pressure Requirements Based on Flow
System Flow PCZ-101-25
(25 PSI outlet)		 PCZ-101-40
(40 PSI outlet)		 ACZ-25
(25 PSI outlet)		 ACZ-40
(40 PSI outlet)
GPM Inlet pressure required to achieve desired outlet pressure (PSI)
0.5 34 41 25 41
1 34 42 26 43
5 34 45 28 47
10 37 52 30 52
15 41 59 32 55
ICZ-101 Kits
GPM Required Pressure for
25 PSI Outlet		 Required Pressure for
40 PSI Outlet
2 35 52
5 35 52
7 36 54
10 40 58
15 46 66
20 60 82
ICZ-101 Low-Flow Kits
GPM Required Pressure for
25 PSI Outlet		 Required Pressure for
40 PSI Outlet
0.5 35 41
1 35 43
5 36 47
10 37 52
15 40 55
ICZ-151 and ICZ-201 Kits
Model System Flow GPM Required Pressure for 40 PSI Outlet
ICZ-151-40-XL 20 45
30 50
40 50
50 50
60 60
70 60
80 65
ICZ-201-40-XL 20 45
30 45
40 45
50 50
60 50
70 50
80 50
90 55
100 55

40 PSI pressure regulator may not be required if the dynamic pressure of an irrigation system is below 60 PSI.

25 PSI pressure regulator may not be required if the dynamic pressure of an irrigation system is below 45 PSI.

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