Minimum Supply Pipes
Select the minimum supply pipe diameter that does not exceed a maximum water velocity of 8 ft/sec (2.4
m/s).
Maximum Flow Rate
GPM (LPM)
4.9 (18.5)
11.0 (41.6)
19.6 (74.2)
30.6 (116)
44.1 (167)
Pressure Tank Pre-charge
Check tank pre-charge regularly to maintain optimum pressure regulation.
System Pressure (at Pressure Sensor)
25
30
35
40
45
50 (Factor Set)
55
60
65
70
75
80
Minimum Pipe Diameter
inches
0.5
0.75
1
1.25
1.5
Pressure Tank Setting (± 2 PSI)
Minimum Pressure Tank and Supply Pipe Sizing
18
21
25
28
32
35
39
42
46
49
53
56
INSTALLATION PLANNING
5