NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227
TECH SERVICES PH: 1.888.446.4226 • FAX: 1.888.336.4226 • INTERNATIONAL OFFICE PH: +1.574.295.3327 • FAX: +1.574.295.3455
www.nibco.com
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www.nibco.com
A H E A D O F T H E F L O W
®
Technical Data
PRESSURE DROP AT AMBIENT TEMPERATURE (PSI / FT)
GPM
3/8”
1/2”
5/8”
3/4”
1”
11/4”
1
0.071
0.016
0.006
2
0.254
0.058
0.021
3
0.538
0.122
0.045
4
0.207
0.076
5
0.313
0.115
0.054
6
0.439
0.161
0.076
7
0.584
0.214
0.101
8
0.224
0.130
9
0.340
0.161
0.051
10
0.196
0.062
0.023
12.5
0.274
0.094
0.035
15
0.414
0.132
0.049
20
0.224
0.084
25
0.339
0.127
30
0.178
40
0.304
50
0.459
NIBCO
®
PEX PIPE DIMENSIONS
Nominal ID
OD
Wall Thickness
Average ID
1/4”
0.275
0.062
0.225
3/8”
0.500
0.070
0.350
1/2”
0.625
0.070
0.475
5/8”
0.750
0.083
0.574
3/4”
0.875
0.097
0.681
1”
1.125
0.125
0.862
1-1/4”
1.275
0.153
1.054
Water Velocity too high
Water Velocity too low
NOTE: Pressure Drop x 2.307 = Feet of Head
