36"
The tables below can be used to estimate friction loss or pressure drop for water flowing through ASME/ANSI B36.10/19 schedule 40 steel pipes.
The pressure drop calculations are based on the D'Arcy-Weisbach Equation with the following parameters:
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Nominal Pipe Size: 3/8"
- Inside Diameter: 0.0125 m (0.49 inches)
For full table with Pressure Drops - rotate the screen!
Steel Pipes Schedule 40 - Pressure Loss - 3/8"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
3.0E-5 |
0.03 |
0.48 |
0.24 |
0.8 |
11455 |
1168 |
0.51 |
1.17 |
4.0E-5 |
0.04 |
0.63 |
0.33 |
1.07 |
19091 |
1947 |
0.84 |
1.95 |
5.0E-5 |
0.05 |
0.79 |
0.41 |
1.34 |
28504 |
2907 |
1.26 |
2.9 |
6.0E-5 |
0.06 |
0.95 |
0.49 |
1.6 |
39137 |
3991 |
1.73 |
4.0 |
7.0E-5 |
0.07 |
1.11 |
0.57 |
1.87 |
51971 |
5299 |
2.3 |
5.3 |
8.0E-5 |
0.08 |
1.27 |
0.65 |
2.1 |
66183 |
6749 |
2.9 |
6.8 |
9.0E-5 |
0.09 |
1.43 |
0.73 |
2.4 |
81615 |
8322 |
3.6 |
8.3 |
1.0E-4 |
0.1 |
1.59 |
0.81 |
2.7 |
98108 |
10004 |
4.3 |
10.0 |
1.1E-4 |
0.11 |
1.74 |
0.9 |
2.9 |
118710 |
12105 |
5.2 |
12.1 |
1.2E-4 |
0.12 |
1.9 |
0.98 |
3.2 |
137457 |
14016 |
6.1 |
14.0 |
1.3E-4 |
0.13 |
2.1 |
1.06 |
3.5 |
161321 |
16450 |
7.1 |
16.5 |
1.4E-4 |
0.14 |
2.2 |
1.14 |
3.7 |
181897 |
18548 |
8.0 |
18.6 |
Nominal Pipe Size: 1/2"
- Inside Diameter: 0.0158 m (0.62 inches)
Steel Pipes Schedule 40 - Pressure Loss - 1/2"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
3.0E-5 |
0.03 |
0.48 |
0.153 |
0.5 |
3698 |
377 |
0.163 |
0.38 |
4.0E-5 |
0.04 |
0.63 |
0.2 |
0.67 |
6180 |
630 |
0.27 |
0.63 |
5.0E-5 |
0.05 |
0.79 |
0.26 |
0.84 |
9040 |
922 |
0.4 |
0.92 |
6.0E-5 |
0.06 |
0.95 |
0.31 |
1.0 |
12426 |
1267 |
0.55 |
1.27 |
7.0E-5 |
0.07 |
1.11 |
0.36 |
1.17 |
16510 |
1684 |
0.73 |
1.69 |
8.0E-5 |
0.08 |
1.27 |
0.41 |
1.34 |
21038 |
2145 |
0.93 |
2.1 |
9.0E-5 |
0.09 |
1.43 |
0.46 |
1.51 |
25961 |
2647 |
1.15 |
2.6 |
1.0E-4 |
0.1 |
1.59 |
0.51 |
1.67 |
31228 |
3184 |
1.38 |
3.2 |
1.1E-4 |
0.11 |
1.74 |
0.56 |
1.84 |
36792 |
3752 |
1.63 |
3.8 |
1.2E-4 |
0.12 |
1.9 |
0.61 |
2.0 |
43785 |
4465 |
1.94 |
4.5 |
1.3E-4 |
0.13 |
2.1 |
0.66 |
2.2 |
49998 |
5098 |
2.2 |
5.1 |
1.4E-4 |
0.14 |
2.2 |
0.71 |
2.3 |
57986 |
5913 |
2.6 |
5.9 |
1.5E-4 |
0.15 |
2.4 |
0.77 |
2.5 |
64717 |
6599 |
2.9 |
6.6 |
1.6E-4 |
0.16 |
2.5 |
0.82 |
2.7 |
73633 |
7508 |
3.3 |
7.5 |
1.7E-4 |
0.17 |
2.7 |
0.87 |
2.8 |
83125 |
8476 |
3.7 |
8.5 |
1.8E-4 |
0.18 |
2.9 |
0.92 |
3.0 |
90529 |
9231 |
4.0 |
9.2 |
1.9E-4 |
0.19 |
3.0 |
0.97 |
3.2 |
100868 |
10285 |
4.5 |
10.3 |
2.0E-4 |
0.2 |
3.2 |
1.02 |
3.3 |
111765 |
11397 |
4.9 |
11.4 |
Nominal Pipe Size: 3/4"
- Inside Diameter: 0.021 m (0.82 inches)
Steel Pipes Schedule 40 - Pressure Loss - 3/4"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
4.0E-5 |
0.04 |
0.63 |
0.115 |
0.38 |
1585 |
162 |
0.07 |
0.162 |
5.0E-5 |
0.05 |
0.79 |
0.144 |
0.47 |
2328 |
237 |
0.103 |
0.24 |
6.0E-5 |
0.06 |
0.95 |
0.173 |
0.57 |
3210 |
327 |
0.142 |
0.33 |
7.0E-5 |
0.07 |
1.11 |
0.2 |
0.66 |
4175 |
426 |
0.185 |
0.43 |
8.0E-5 |
0.08 |
1.27 |
0.23 |
0.76 |
5326 |
543 |
0.24 |
0.54 |
9.0E-5 |
0.09 |
1.43 |
0.26 |
0.85 |
6419 |
655 |
0.28 |
0.66 |
1.0E-4 |
0.1 |
1.59 |
0.29 |
0.95 |
7727 |
788 |
0.34 |
0.79 |
1.1E-4 |
0.11 |
1.74 |
0.32 |
1.04 |
9350 |
953 |
0.41 |
0.95 |
1.2E-4 |
0.12 |
1.9 |
0.35 |
1.14 |
10842 |
1106 |
0.48 |
1.11 |
1.3E-4 |
0.13 |
2.1 |
0.38 |
1.23 |
12389 |
1263 |
0.55 |
1.26 |
1.4E-4 |
0.14 |
2.2 |
0.4 |
1.33 |
14369 |
1465 |
0.64 |
1.47 |
1.5E-4 |
0.15 |
2.4 |
0.43 |
1.42 |
16049 |
1636 |
0.71 |
1.64 |
1.6E-4 |
0.16 |
2.5 |
0.46 |
1.52 |
18260 |
1862 |
0.81 |
1.86 |
1.7E-4 |
0.17 |
2.7 |
0.49 |
1.61 |
20041 |
2044 |
0.89 |
2.0 |
1.8E-4 |
0.18 |
2.9 |
0.52 |
1.7 |
22468 |
2291 |
0.99 |
2.3 |
1.9E-4 |
0.19 |
3.0 |
0.55 |
1.8 |
25034 |
2553 |
1.11 |
2.6 |
2.0E-4 |
0.2 |
3.2 |
0.58 |
1.89 |
26946 |
2748 |
1.19 |
2.8 |
3.0E-4 |
0.3 |
4.8 |
0.87 |
2.8 |
57062 |
5819 |
2.5 |
5.8 |
4.0E-4 |
0.4 |
6.3 |
1.15 |
3.8 |
98274 |
10021 |
4.3 |
10.0 |
5.0E-4 |
0.5 |
7.9 |
1.44 |
4.7 |
148599 |
15153 |
6.6 |
15.2 |
Nominal Pipe Size: 1"
- Inside Diameter: 0.027 m (1.05 inches)
Steel Pipes Schedule 40 - Pressure Loss - 1"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
7.0E-5 |
0.07 |
1.11 |
0.122 |
0.4 |
1243 |
127 |
0.055 |
0.127 |
8.0E-5 |
0.08 |
1.27 |
0.14 |
0.46 |
1588 |
162 |
0.07 |
0.162 |
9.0E-5 |
0.09 |
1.43 |
0.157 |
0.52 |
1919 |
196 |
0.085 |
0.196 |
1.0E-4 |
0.1 |
1.59 |
0.175 |
0.57 |
2312 |
236 |
0.102 |
0.24 |
1.1E-4 |
0.11 |
1.74 |
0.192 |
0.63 |
2729 |
278 |
0.121 |
0.28 |
1.2E-4 |
0.12 |
1.9 |
0.21 |
0.69 |
3248 |
331 |
0.144 |
0.33 |
1.3E-4 |
0.13 |
2.1 |
0.23 |
0.74 |
3717 |
379 |
0.164 |
0.38 |
1.4E-4 |
0.14 |
2.2 |
0.24 |
0.8 |
4200 |
428 |
0.186 |
0.43 |
1.5E-4 |
0.15 |
2.4 |
0.26 |
0.86 |
4822 |
492 |
0.21 |
0.49 |
1.6E-4 |
0.16 |
2.5 |
0.28 |
0.92 |
5342 |
545 |
0.24 |
0.55 |
1.7E-4 |
0.17 |
2.7 |
0.3 |
0.97 |
6030 |
615 |
0.27 |
0.62 |
1.8E-4 |
0.18 |
2.9 |
0.31 |
1.03 |
6578 |
671 |
0.29 |
0.67 |
1.9E-4 |
0.19 |
3.0 |
0.33 |
1.09 |
7329 |
747 |
0.32 |
0.75 |
2.0E-4 |
0.2 |
3.2 |
0.35 |
1.15 |
7895 |
805 |
0.35 |
0.81 |
3.0E-4 |
0.3 |
4.8 |
0.52 |
1.72 |
16749 |
1708 |
0.74 |
1.71 |
4.0E-4 |
0.4 |
6.3 |
0.7 |
2.3 |
27971 |
2852 |
1.24 |
2.9 |
5.0E-4 |
0.5 |
7.9 |
0.87 |
2.9 |
42295 |
4313 |
1.87 |
4.3 |
6.0E-4 |
0.6 |
9.5 |
1.05 |
3.4 |
58875 |
6004 |
2.6 |
6.0 |
7.0E-4 |
0.7 |
11.1 |
1.22 |
4.0 |
80136 |
8171 |
3.5 |
8.2 |
8.0E-4 |
0.8 |
12.7 |
1.4 |
4.6 |
101058 |
10305 |
4.5 |
10.3 |
9.0E-4 |
0.9 |
14.3 |
1.57 |
5.2 |
127901 |
13042 |
5.7 |
13.1 |
0.0010 |
1.0 |
15.9 |
1.75 |
5.7 |
152264 |
15526 |
6.7 |
15.5 |
0.0011 |
1.1 |
17.4 |
1.92 |
6.3 |
184239 |
18787 |
8.1 |
18.8 |
Nominal Pipe Size: 1 1/4"
- Inside Diameter: 0.032 m (1.28 inches)
Steel Pipes Schedule 40 - Pressure Loss - 1 1/4"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
1.0E-4 |
0.1 |
1.59 |
0.124 |
0.41 |
1037 |
106 |
0.046 |
0.106 |
1.1E-4 |
0.11 |
1.74 |
0.137 |
0.45 |
1226 |
125 |
0.054 |
0.125 |
1.2E-4 |
0.12 |
1.9 |
0.149 |
0.49 |
1424 |
145 |
0.063 |
0.145 |
1.3E-4 |
0.13 |
2.1 |
0.162 |
0.53 |
1630 |
166 |
0.072 |
0.166 |
1.4E-4 |
0.14 |
2.2 |
0.174 |
0.57 |
1843 |
188 |
0.081 |
0.188 |
1.5E-4 |
0.15 |
2.4 |
0.187 |
0.61 |
2116 |
216 |
0.094 |
0.22 |
1.6E-4 |
0.16 |
2.5 |
0.199 |
0.65 |
2346 |
239 |
0.104 |
0.24 |
1.7E-4 |
0.17 |
2.7 |
0.21 |
0.69 |
2648 |
270 |
0.117 |
0.27 |
1.8E-4 |
0.18 |
2.9 |
0.22 |
0.73 |
2891 |
295 |
0.128 |
0.3 |
1.9E-4 |
0.19 |
3.0 |
0.24 |
0.78 |
3221 |
328 |
0.142 |
0.33 |
2.0E-4 |
0.2 |
3.2 |
0.25 |
0.82 |
3473 |
354 |
0.153 |
0.35 |
3.0E-4 |
0.3 |
4.8 |
0.37 |
1.22 |
7162 |
730 |
0.32 |
0.73 |
4.0E-4 |
0.4 |
6.3 |
0.5 |
1.63 |
11961 |
1220 |
0.53 |
1.22 |
5.0E-4 |
0.5 |
7.9 |
0.62 |
2.0 |
18087 |
1844 |
0.8 |
1.85 |
6.0E-4 |
0.6 |
9.5 |
0.75 |
2.4 |
25177 |
2567 |
1.11 |
2.6 |
7.0E-4 |
0.7 |
11.1 |
0.87 |
2.9 |
34269 |
3494 |
1.51 |
3.5 |
8.0E-4 |
0.8 |
12.7 |
0.99 |
3.3 |
43215 |
4407 |
1.91 |
4.4 |
9.0E-4 |
0.9 |
14.3 |
1.12 |
3.7 |
54695 |
5577 |
2.4 |
5.6 |
0.0010 |
1.0 |
15.9 |
1.24 |
4.1 |
65113 |
6640 |
2.9 |
6.6 |
0.0011 |
1.1 |
17.4 |
1.37 |
4.5 |
78786 |
8034 |
3.5 |
8.0 |
0.0012 |
1.2 |
19.0 |
1.49 |
4.9 |
93762 |
9561 |
4.1 |
9.6 |
0.0013 |
1.3 |
21 |
1.62 |
5.3 |
105965 |
10805 |
4.7 |
10.8 |
0.0014 |
1.4 |
22 |
1.74 |
5.7 |
122894 |
12532 |
5.4 |
12.5 |
0.0015 |
1.5 |
24 |
1.87 |
6.1 |
141077 |
14386 |
6.2 |
14.4 |
0.0016 |
1.6 |
25 |
1.99 |
6.5 |
160515 |
16368 |
7.1 |
16.4 |
0.0017 |
1.7 |
27 |
2.1 |
6.9 |
181206 |
18478 |
8.0 |
18.5 |
Nominal Pipe Size: 1 1/2"
- Inside Diameter: 0.041 m (1.61 inches)
Steel Pipes Schedule 40 - Pressure Loss - 1 1/2"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
2.0E-4 |
0.2 |
3.2 |
0.151 |
0.5 |
1062 |
108 |
0.047 |
0.108 |
3.0E-4 |
0.3 |
4.8 |
0.23 |
0.75 |
2200 |
224 |
0.097 |
0.22 |
4.0E-4 |
0.4 |
6.3 |
0.3 |
0.99 |
3688 |
376 |
0.163 |
0.38 |
5.0E-4 |
0.5 |
7.9 |
0.38 |
1.24 |
5413 |
552 |
0.24 |
0.55 |
6.0E-4 |
0.6 |
9.5 |
0.45 |
1.49 |
7543 |
769 |
0.33 |
0.77 |
7.0E-4 |
0.7 |
11.1 |
0.53 |
1.74 |
9925 |
1012 |
0.44 |
1.01 |
8.0E-4 |
0.8 |
12.7 |
0.61 |
1.99 |
12963 |
1322 |
0.57 |
1.32 |
9.0E-4 |
0.9 |
14.3 |
0.68 |
2.2 |
15841 |
1615 |
0.7 |
1.62 |
0.0010 |
1.0 |
15.9 |
0.76 |
2.5 |
19556 |
1994 |
0.86 |
2.0 |
0.0011 |
1.1 |
17.4 |
0.83 |
2.7 |
22818 |
2327 |
1.01 |
2.3 |
0.0012 |
1.2 |
19.0 |
0.91 |
3.0 |
27156 |
2769 |
1.2 |
2.8 |
0.0013 |
1.3 |
21 |
0.98 |
3.2 |
31870 |
3250 |
1.41 |
3.3 |
0.0014 |
1.4 |
22 |
1.06 |
3.5 |
35593 |
3629 |
1.57 |
3.6 |
0.0015 |
1.5 |
24 |
1.14 |
3.7 |
40859 |
4166 |
1.81 |
4.2 |
0.0016 |
1.6 |
25 |
1.21 |
4.0 |
46488 |
4740 |
2.1 |
4.7 |
0.0017 |
1.7 |
27 |
1.29 |
4.2 |
52481 |
5352 |
2.3 |
5.4 |
0.0018 |
1.8 |
29 |
1.36 |
4.5 |
56574 |
5769 |
2.5 |
5.8 |
0.0019 |
1.9 |
30 |
1.44 |
4.7 |
63035 |
6428 |
2.8 |
6.4 |
0.0020 |
2.0 |
32 |
1.51 |
5.0 |
69844 |
7122 |
3.1 |
7.1 |
0.0030 |
3.0 |
48 |
2.3 |
7.5 |
150864 |
15384 |
6.7 |
15.4 |
Nominal Pipe Size: 2"
- Inside Diameter: 0.053 m (2.1 inches)
Steel Pipes Schedule 40 - Pressure Loss - 2"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
4.0E-4 |
0.4 |
6.3 |
0.181 |
0.59 |
1053 |
107 |
0.047 |
0.107 |
5.0E-4 |
0.5 |
7.9 |
0.23 |
0.74 |
1548 |
158 |
0.068 |
0.158 |
6.0E-4 |
0.6 |
9.5 |
0.27 |
0.89 |
2159 |
220 |
0.095 |
0.22 |
7.0E-4 |
0.7 |
11.1 |
0.32 |
1.04 |
2844 |
290 |
0.126 |
0.29 |
8.0E-4 |
0.8 |
12.7 |
0.36 |
1.19 |
3591 |
366 |
0.159 |
0.37 |
9.0E-4 |
0.9 |
14.3 |
0.41 |
1.34 |
4545 |
463 |
0.2 |
0.46 |
0.0010 |
1.0 |
15.9 |
0.45 |
1.49 |
5418 |
552 |
0.24 |
0.55 |
0.0011 |
1.1 |
17.4 |
0.5 |
1.64 |
6556 |
668 |
0.29 |
0.67 |
0.0012 |
1.2 |
19.0 |
0.54 |
1.78 |
7523 |
767 |
0.33 |
0.77 |
0.0013 |
1.3 |
21 |
0.59 |
1.93 |
8829 |
900 |
0.39 |
0.9 |
0.0014 |
1.4 |
22 |
0.63 |
2.1 |
10240 |
1044 |
0.45 |
1.05 |
0.0015 |
1.5 |
24 |
0.68 |
2.2 |
11320 |
1154 |
0.5 |
1.16 |
0.0016 |
1.6 |
25 |
0.73 |
2.4 |
12879 |
1313 |
0.57 |
1.31 |
0.0017 |
1.7 |
27 |
0.77 |
2.5 |
14539 |
1483 |
0.64 |
1.48 |
0.0018 |
1.8 |
29 |
0.82 |
2.7 |
16300 |
1662 |
0.72 |
1.66 |
0.0019 |
1.9 |
30 |
0.86 |
2.8 |
17463 |
1781 |
0.77 |
1.78 |
0.0020 |
2.0 |
32 |
0.91 |
3.0 |
19350 |
1973 |
0.86 |
1.98 |
0.0030 |
3.0 |
48 |
1.36 |
4.5 |
41795 |
4262 |
1.85 |
4.3 |
0.0040 |
4.0 |
63 |
1.81 |
5.9 |
71207 |
7261 |
3.1 |
7.3 |
0.0050 |
5.0 |
79 |
2.3 |
7.4 |
111260 |
11345 |
4.9 |
11.4 |
0.0060 |
6.0 |
95 |
2.7 |
8.9 |
153249 |
15627 |
6.8 |
15.6 |
Nominal Pipe Size: 2 1/2"
- Inside Diameter: 0.063 m (2.5 inches)
Steel Pipes Schedule 40 - Pressure Loss - 2 1/2"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
7.0E-4 |
0.7 |
11.1 |
0.22 |
0.74 |
1239 |
126 |
0.055 |
0.126 |
8.0E-4 |
0.8 |
12.7 |
0.26 |
0.84 |
1565 |
160 |
0.069 |
0.16 |
9.0E-4 |
0.9 |
14.3 |
0.29 |
0.95 |
1915 |
195 |
0.085 |
0.195 |
0.0010 |
1.0 |
15.9 |
0.32 |
1.05 |
2365 |
241 |
0.105 |
0.24 |
0.0011 |
1.1 |
17.4 |
0.35 |
1.16 |
2762 |
282 |
0.122 |
0.28 |
0.0012 |
1.2 |
19.0 |
0.38 |
1.26 |
3288 |
335 |
0.145 |
0.34 |
0.0013 |
1.3 |
21 |
0.42 |
1.37 |
3720 |
379 |
0.164 |
0.38 |
0.0014 |
1.4 |
22 |
0.45 |
1.47 |
4315 |
440 |
0.191 |
0.44 |
0.0015 |
1.5 |
24 |
0.48 |
1.58 |
4953 |
505 |
0.22 |
0.51 |
0.0016 |
1.6 |
25 |
0.51 |
1.68 |
5427 |
553 |
0.24 |
0.55 |
0.0017 |
1.7 |
27 |
0.55 |
1.79 |
6127 |
625 |
0.27 |
0.63 |
0.0018 |
1.8 |
29 |
0.58 |
1.89 |
6869 |
700 |
0.3 |
0.7 |
0.0019 |
1.9 |
30 |
0.61 |
2.0 |
7653 |
780 |
0.34 |
0.78 |
0.0020 |
2.0 |
32 |
0.64 |
2.1 |
8480 |
865 |
0.37 |
0.87 |
0.0030 |
3.0 |
48 |
0.96 |
3.2 |
17612 |
1796 |
0.78 |
1.8 |
0.0040 |
4.0 |
63 |
1.28 |
4.2 |
30005 |
3060 |
1.33 |
3.1 |
0.0050 |
5.0 |
79 |
1.6 |
5.3 |
46883 |
4781 |
2.1 |
4.8 |
0.0060 |
6.0 |
95 |
1.92 |
6.3 |
64576 |
6585 |
2.9 |
6.6 |
0.0070 |
7.0 |
111 |
2.2 |
7.4 |
87896 |
8963 |
3.9 |
9.0 |
0.0080 |
8.0 |
127 |
2.6 |
8.4 |
114802 |
11706 |
5.1 |
11.7 |
0.0090 |
9.0 |
143 |
2.9 |
9.5 |
138692 |
14142 |
6.1 |
14.2 |
0.01 |
10.0 |
159 |
3.2 |
10.5 |
171225 |
17460 |
7.6 |
17.5 |
Nominal Pipe Size: 3"
- Inside Diameter: 0.078 m (3.1 inches)
Steel Pipes Schedule 40 - Pressure Loss - 3"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.0012 |
1.2 |
19.0 |
0.25 |
0.82 |
1170 |
119 |
0.052 |
0.119 |
0.0013 |
1.3 |
21 |
0.27 |
0.89 |
1326 |
135 |
0.059 |
0.135 |
0.0014 |
1.4 |
22 |
0.29 |
0.96 |
1538 |
157 |
0.068 |
0.157 |
0.0015 |
1.5 |
24 |
0.31 |
1.03 |
1766 |
180 |
0.078 |
0.18 |
0.0016 |
1.6 |
25 |
0.33 |
1.1 |
1937 |
198 |
0.086 |
0.198 |
0.0017 |
1.7 |
27 |
0.36 |
1.17 |
2187 |
223 |
0.097 |
0.22 |
0.0018 |
1.8 |
29 |
0.38 |
1.24 |
2452 |
250 |
0.108 |
0.25 |
0.0019 |
1.9 |
30 |
0.4 |
1.3 |
2631 |
268 |
0.116 |
0.27 |
0.0020 |
2.0 |
32 |
0.42 |
1.37 |
2915 |
297 |
0.129 |
0.3 |
0.0030 |
3.0 |
48 |
0.63 |
2.1 |
6054 |
617 |
0.27 |
0.62 |
0.0040 |
4.0 |
63 |
0.84 |
2.7 |
10314 |
1052 |
0.46 |
1.05 |
0.0050 |
5.0 |
79 |
1.05 |
3.4 |
16116 |
1643 |
0.71 |
1.64 |
0.0060 |
6.0 |
95 |
1.26 |
4.1 |
22197 |
2263 |
0.98 |
2.3 |
0.0070 |
7.0 |
111 |
1.46 |
4.8 |
30213 |
3081 |
1.34 |
3.1 |
0.0080 |
8.0 |
127 |
1.67 |
5.5 |
39462 |
4024 |
1.74 |
4.0 |
0.0090 |
9.0 |
143 |
1.88 |
6.2 |
47674 |
4861 |
2.1 |
4.9 |
0.01 |
10.0 |
159 |
2.1 |
6.9 |
58857 |
6002 |
2.6 |
6.0 |
0.011 |
11.0 |
174 |
2.3 |
7.6 |
71217 |
7262 |
3.1 |
7.3 |
0.012 |
12.0 |
190 |
2.5 |
8.2 |
84754 |
8642 |
3.7 |
8.7 |
0.013 |
13.0 |
206 |
2.7 |
8.9 |
99468 |
10143 |
4.4 |
10.2 |
0.014 |
14.0 |
222 |
2.9 |
9.6 |
115360 |
11763 |
5.1 |
11.8 |
0.015 |
15.0 |
238 |
3.1 |
10.3 |
126122 |
12861 |
5.6 |
12.9 |
0.016 |
16.0 |
254 |
3.3 |
11.0 |
143499 |
14633 |
6.3 |
14.6 |
0.017 |
17.0 |
269 |
3.6 |
11.7 |
161997 |
16519 |
7.2 |
16.5 |
0.018 |
18.0 |
285 |
3.8 |
12.4 |
181616 |
18519 |
8.0 |
18.5 |
Nominal Pipe Size: 3 1/2"
- Inside Diameter: 0.09 m (3.548 inches)
Steel Pipes Schedule 40 - Pressure Loss - 3 1/2"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.0020 |
2 |
32 |
0.41 |
1.35 |
2908 |
296 |
0.13 |
0.30 |
0.0030 |
3 |
48 |
0.62 |
2.02 |
6162 |
627 |
0.27 |
0.63 |
0.0040 |
4 |
63 |
0.82 |
2.69 |
10498 |
1069 |
0.46 |
1.07 |
0.0050 |
5 |
79 |
1.03 |
3.37 |
15870 |
1616 |
0.70 |
1.62 |
0.0060 |
6 |
95 |
1.23 |
4.04 |
22245 |
2265 |
0.98 |
2.27 |
0.0070 |
7 |
111 |
1.44 |
4.72 |
29595 |
3013 |
1.31 |
3.02 |
0.0080 |
8 |
127 |
1.64 |
5.39 |
37898 |
3858 |
1.68 |
3.87 |
0.0090 |
9 |
143 |
1.85 |
6.06 |
47135 |
4799 |
2.08 |
4.81 |
0.010 |
10 |
159 |
2.05 |
6.74 |
57292 |
5833 |
2.53 |
5.85 |
0.011 |
11 |
174 |
2.26 |
7.41 |
68352 |
6959 |
3.02 |
6.98 |
0.012 |
12 |
190 |
2.46 |
8.08 |
80303 |
8176 |
3.55 |
8.20 |
0.013 |
13 |
206 |
2.67 |
8.76 |
93135 |
9482 |
4.12 |
9.51 |
0.014 |
14 |
222 |
2.88 |
9.43 |
106836 |
10877 |
4.72 |
10.91 |
0.015 |
15 |
238 |
3.08 |
10.10 |
121398 |
12359 |
5.37 |
12.40 |
0.016 |
16 |
254 |
3.29 |
10.78 |
136811 |
13928 |
6.05 |
13.97 |
0.017 |
17 |
269 |
3.49 |
11.45 |
153067 |
15584 |
6.77 |
15.63 |
0.018 |
18 |
285 |
3.70 |
12.12 |
170159 |
17324 |
7.52 |
17.37 |
0.019 |
19 |
301 |
3.90 |
12.80 |
188080 |
19148 |
8.32 |
19.20 |
0.020 |
20 |
317 |
4.11 |
13.47 |
206822 |
21056 |
9.14 |
21.12 |
0.030 |
30 |
476 |
6.16 |
20.21 |
438247 |
44617 |
19.38 |
44.75 |
Nominal Pipe Size: 4"
- Inside Diameter: 0.102 m (4.0 inches)
For full table with Pressure Drops - rotate the screen!
Steel Pipes Schedule 40 - Pressure Loss - 4"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.0030 |
3.0 |
48 |
0.37 |
1.2 |
1649 |
168 |
0.073 |
0.168 |
0.0040 |
4.0 |
63 |
0.49 |
1.61 |
2814 |
287 |
0.124 |
0.29 |
0.0050 |
5.0 |
79 |
0.61 |
2.0 |
4214 |
430 |
0.186 |
0.43 |
0.0060 |
6.0 |
95 |
0.73 |
2.4 |
5805 |
592 |
0.26 |
0.59 |
0.0070 |
7.0 |
111 |
0.86 |
2.8 |
7901 |
806 |
0.35 |
0.81 |
0.0080 |
8.0 |
127 |
0.98 |
3.2 |
10319 |
1052 |
0.46 |
1.05 |
0.0090 |
9.0 |
143 |
1.1 |
3.6 |
12467 |
1271 |
0.55 |
1.27 |
0.01 |
10.0 |
159 |
1.22 |
4.0 |
15391 |
1569 |
0.68 |
1.57 |
0.011 |
11.0 |
174 |
1.35 |
4.4 |
18623 |
1899 |
0.82 |
1.9 |
0.012 |
12.0 |
190 |
1.47 |
4.8 |
22163 |
2260 |
0.98 |
2.3 |
0.013 |
13.0 |
206 |
1.59 |
5.2 |
24772 |
2526 |
1.09 |
2.5 |
0.014 |
14.0 |
222 |
1.71 |
5.6 |
28730 |
2930 |
1.27 |
2.9 |
0.015 |
15.0 |
238 |
1.84 |
6.0 |
32981 |
3363 |
1.46 |
3.4 |
0.016 |
16.0 |
254 |
1.96 |
6.4 |
37525 |
3826 |
1.66 |
3.8 |
0.017 |
17.0 |
269 |
2.1 |
6.8 |
42362 |
4320 |
1.87 |
4.3 |
0.018 |
18.0 |
285 |
2.2 |
7.2 |
47493 |
4843 |
2.1 |
4.8 |
0.019 |
19.0 |
301 |
2.3 |
7.6 |
52916 |
5396 |
2.3 |
5.4 |
0.02 |
20 |
317 |
2.4 |
8.0 |
58633 |
5979 |
2.6 |
6.0 |
0.03 |
30 |
476 |
3.7 |
12.0 |
125328 |
12780 |
5.5 |
12.8 |
Nominal Pipe Size: 5"
- Inside Diameter: 0.128 m (5.0 inches)
Steel Pipes Schedule 40 - Pressure Loss - 5"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.0050 |
5.0 |
79 |
0.39 |
1.27 |
1413 |
144 |
0.062 |
0.144 |
0.0060 |
6.0 |
95 |
0.47 |
1.53 |
1950 |
199 |
0.086 |
0.199 |
0.0070 |
7.0 |
111 |
0.54 |
1.78 |
2539 |
259 |
0.112 |
0.26 |
0.0080 |
8.0 |
127 |
0.62 |
2.0 |
3316 |
338 |
0.147 |
0.34 |
0.0090 |
9.0 |
143 |
0.7 |
2.3 |
4197 |
428 |
0.185 |
0.43 |
0.01 |
10.0 |
159 |
0.78 |
2.5 |
4946 |
504 |
0.22 |
0.5 |
0.011 |
11.0 |
174 |
0.85 |
2.8 |
5984 |
610 |
0.26 |
0.61 |
0.012 |
12.0 |
190 |
0.93 |
3.1 |
7122 |
726 |
0.31 |
0.73 |
0.013 |
13.0 |
206 |
1.01 |
3.3 |
8358 |
852 |
0.37 |
0.85 |
0.014 |
14.0 |
222 |
1.09 |
3.6 |
9232 |
941 |
0.41 |
0.94 |
0.015 |
15.0 |
238 |
1.17 |
3.8 |
10598 |
1081 |
0.47 |
1.08 |
0.016 |
16.0 |
254 |
1.24 |
4.1 |
12058 |
1230 |
0.53 |
1.23 |
0.017 |
17.0 |
269 |
1.32 |
4.3 |
13612 |
1388 |
0.6 |
1.39 |
0.018 |
18.0 |
285 |
1.4 |
4.6 |
15261 |
1556 |
0.67 |
1.56 |
0.019 |
19.0 |
301 |
1.48 |
4.8 |
17004 |
1734 |
0.75 |
1.74 |
0.02 |
20 |
317 |
1.55 |
5.1 |
18840 |
1921 |
0.83 |
1.92 |
0.03 |
30 |
476 |
2.3 |
7.6 |
40271 |
4106 |
1.78 |
4.1 |
0.04 |
40 |
634 |
3.1 |
10.2 |
67826 |
6916 |
3.0 |
6.9 |
0.05 |
50 |
793 |
3.9 |
12.7 |
105978 |
10807 |
4.7 |
10.8 |
0.06 |
60 |
951 |
4.7 |
15.3 |
152608 |
15561 |
6.7 |
15.6 |
Nominal Pipe Size: 6"
- Inside Diameter: 0.154 m (6.1 inches)
Steel Pipes Schedule 40 - Pressure Loss - 6"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.0070 |
7.0 |
111 |
0.38 |
1.23 |
1053 |
107 |
0.047 |
0.107 |
0.0080 |
8.0 |
127 |
0.43 |
1.41 |
1315 |
134 |
0.058 |
0.134 |
0.0090 |
9.0 |
143 |
0.48 |
1.59 |
1665 |
170 |
0.074 |
0.17 |
0.01 |
10.0 |
159 |
0.54 |
1.76 |
2055 |
210 |
0.091 |
0.21 |
0.011 |
11.0 |
174 |
0.59 |
1.94 |
2374 |
242 |
0.105 |
0.24 |
0.012 |
12.0 |
190 |
0.64 |
2.1 |
2825 |
288 |
0.125 |
0.29 |
0.013 |
13.0 |
206 |
0.7 |
2.3 |
3316 |
338 |
0.147 |
0.34 |
0.014 |
14.0 |
222 |
0.75 |
2.5 |
3845 |
392 |
0.17 |
0.39 |
0.015 |
15.0 |
238 |
0.81 |
2.6 |
4204 |
429 |
0.186 |
0.43 |
0.016 |
16.0 |
254 |
0.86 |
2.8 |
4783 |
488 |
0.21 |
0.49 |
0.017 |
17.0 |
269 |
0.91 |
3.0 |
5400 |
551 |
0.24 |
0.55 |
0.018 |
18.0 |
285 |
0.97 |
3.2 |
6054 |
617 |
0.27 |
0.62 |
0.019 |
19.0 |
301 |
1.02 |
3.3 |
6745 |
688 |
0.3 |
0.69 |
0.02 |
20 |
317 |
1.07 |
3.5 |
7474 |
762 |
0.33 |
0.76 |
0.03 |
30 |
476 |
1.61 |
5.3 |
15975 |
1629 |
0.71 |
1.63 |
0.04 |
40 |
634 |
2.1 |
7.0 |
26905 |
2744 |
1.19 |
2.7 |
0.05 |
50 |
793 |
2.7 |
8.8 |
42040 |
4287 |
1.86 |
4.3 |
0.06 |
60 |
951 |
3.2 |
10.6 |
60537 |
6173 |
2.7 |
6.2 |
0.07 |
70 |
1110 |
3.8 |
12.3 |
82398 |
8402 |
3.6 |
8.4 |
0.08 |
80 |
1268 |
4.3 |
14.1 |
101643 |
10365 |
4.5 |
10.4 |
0.09 |
90 |
1427 |
4.8 |
15.9 |
128642 |
13118 |
5.7 |
13.1 |
0.1 |
100 |
1585 |
5.4 |
17.6 |
158817 |
16195 |
7.0 |
16.2 |
0.11 |
110 |
1744 |
5.9 |
19.4 |
192168 |
19595 |
8.5 |
19.6 |
Nominal Pipe Size: 8"
- Inside Diameter: 0.2 m (8.0 inches)
Steel Pipes Schedule 40 - Pressure Loss - 8"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.014 |
14.0 |
222 |
0.45 |
1.46 |
1041 |
106 |
0.046 |
0.106 |
0.015 |
15.0 |
238 |
0.48 |
1.57 |
1195 |
122 |
0.053 |
0.122 |
0.016 |
16.0 |
254 |
0.51 |
1.67 |
1359 |
139 |
0.06 |
0.139 |
0.017 |
17.0 |
269 |
0.54 |
1.78 |
1462 |
149 |
0.065 |
0.149 |
0.018 |
18.0 |
285 |
0.57 |
1.88 |
1639 |
167 |
0.072 |
0.167 |
0.019 |
19.0 |
301 |
0.6 |
1.98 |
1826 |
186 |
0.081 |
0.186 |
0.02 |
20 |
317 |
0.64 |
2.1 |
2023 |
206 |
0.089 |
0.21 |
0.03 |
30 |
476 |
0.95 |
3.1 |
4324 |
441 |
0.191 |
0.44 |
0.04 |
40 |
634 |
1.27 |
4.2 |
7283 |
743 |
0.32 |
0.74 |
0.05 |
50 |
793 |
1.59 |
5.2 |
11379 |
1160 |
0.5 |
1.16 |
0.06 |
60 |
951 |
1.91 |
6.3 |
16386 |
1671 |
0.72 |
1.67 |
0.07 |
70 |
1110 |
2.2 |
7.3 |
21064 |
2148 |
0.93 |
2.2 |
0.08 |
80 |
1268 |
2.5 |
8.4 |
27513 |
2805 |
1.22 |
2.8 |
0.09 |
90 |
1427 |
2.9 |
9.4 |
34821 |
3551 |
1.54 |
3.6 |
0.1 |
100 |
1585 |
3.2 |
10.4 |
42988 |
4384 |
1.9 |
4.4 |
0.11 |
110 |
1744 |
3.5 |
11.5 |
52016 |
5304 |
2.3 |
5.3 |
0.12 |
120 |
1902 |
3.8 |
12.5 |
61903 |
6312 |
2.7 |
6.3 |
0.13 |
130 |
2061 |
4.1 |
13.6 |
72650 |
7408 |
3.2 |
7.4 |
0.14 |
140 |
2219 |
4.5 |
14.6 |
84257 |
8592 |
3.7 |
8.6 |
0.15 |
150 |
2378 |
4.8 |
15.7 |
91034 |
9283 |
4.0 |
9.3 |
0.16 |
160 |
2536 |
5.1 |
16.7 |
103577 |
10562 |
4.6 |
10.6 |
0.17 |
170 |
2695 |
5.4 |
17.8 |
116928 |
11923 |
5.2 |
11.9 |
0.18 |
180 |
2853 |
5.7 |
18.8 |
131089 |
13367 |
5.8 |
13.4 |
0.19 |
190 |
3012 |
6.0 |
19.8 |
146059 |
14894 |
6.5 |
14.9 |
0.2 |
200 |
3170 |
6.4 |
21 |
161838 |
16503 |
7.2 |
16.5 |
A diagram presentation of the tables above can be found in "Steel Pipe Schedule 40 - Friction loss and Velocity Diagram".
Nominal Pipe Size: 10"
- Inside Diameter: 0.25 m (10.0 inches)
Steel Pipes Schedule 40 - Pressure Loss - 10"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.014 |
14.2 |
225 |
0.28 |
0.91 |
300 |
31 |
0.01 |
0.03 |
0.015 |
15.0 |
238 |
0.30 |
0.97 |
300 |
31 |
0.01 |
0.03 |
0.016 |
15.8 |
251 |
0.31 |
1.0 |
400 |
41 |
0.02 |
0.04 |
0.017 |
16.7 |
264 |
0.33 |
1.1 |
400 |
41 |
0.02 |
0.04 |
0.018 |
18.3 |
291 |
0.36 |
1.2 |
500 |
51 |
0.02 |
0.05 |
0.020 |
20.0 |
317 |
0.39 |
1.3 |
600 |
61 |
0.03 |
0.06 |
0.022 |
21.7 |
344 |
0.43 |
1.4 |
700 |
71 |
0.03 |
0.07 |
0.023 |
23.3 |
369 |
0.46 |
1.5 |
800 |
82 |
0.04 |
0.08 |
0.025 |
25.0 |
396 |
0.49 |
1.6 |
900 |
92 |
0.04 |
0.09 |
0.027 |
26.7 |
423 |
0.52 |
1.7 |
1000 |
102 |
0.04 |
0.10 |
0.028 |
28.3 |
449 |
0.56 |
1.8 |
1100 |
112 |
0.05 |
0.11 |
0.030 |
30.0 |
476 |
0.59 |
1.9 |
1200 |
122 |
0.05 |
0.12 |
0.032 |
31.7 |
502 |
0.62 |
2.0 |
1400 |
143 |
0.06 |
0.14 |
0.033 |
33.3 |
528 |
0.66 |
2.1 |
1500 |
153 |
0.07 |
0.15 |
0.037 |
36.7 |
581 |
0.72 |
2.4 |
1800 |
184 |
0.08 |
0.18 |
0.040 |
40.0 |
634 |
0.79 |
2.6 |
2100 |
214 |
0.09 |
0.21 |
0.043 |
43.3 |
687 |
0.85 |
2.8 |
2400 |
245 |
0.11 |
0.25 |
0.047 |
46.7 |
740 |
0.92 |
3.0 |
2800 |
286 |
0.12 |
0.29 |
0.050 |
50.0 |
793 |
0.98 |
3.2 |
3200 |
326 |
0.14 |
0.33 |
0.058 |
58.3 |
924 |
1.1 |
3.8 |
4200 |
428 |
0.19 |
0.43 |
0.067 |
66.7 |
1057 |
1.3 |
4.3 |
5400 |
551 |
0.24 |
0.55 |
0.075 |
75.0 |
1189 |
1.5 |
4.8 |
6800 |
693 |
0.30 |
0.69 |
0.083 |
83.3 |
1320 |
1.6 |
5.4 |
8300 |
846 |
0.37 |
0.85 |
0.10 |
100 |
1585 |
2.0 |
6.4 |
11700 |
1193 |
0.52 |
1.2 |
0.12 |
117 |
1850 |
2.3 |
7.5 |
15700 |
1601 |
0.69 |
1.6 |
0.13 |
133 |
2113 |
2.6 |
8.6 |
20300 |
2070 |
0.90 |
2.1 |
0.15 |
150 |
2378 |
2.9 |
9.7 |
25500 |
2600 |
1.1 |
2.6 |
0.17 |
167 |
2643 |
3.3 |
10.7 |
31200 |
3181 |
1.4 |
3.2 |
0.20 |
200 |
3170 |
3.9 |
12.9 |
44400 |
4527 |
2.0 |
4.5 |
0.23 |
233 |
3698 |
4.6 |
15.0 |
59900 |
6108 |
2.6 |
6.1 |
0.27 |
267 |
4228 |
5.2 |
17.2 |
77600 |
7913 |
3.4 |
7.9 |
0.30 |
300 |
4756 |
5.9 |
19.3 |
97600 |
9952 |
4.3 |
10.0 |
0.33 |
333 |
5283 |
6.6 |
21.5 |
119900 |
12226 |
5.3 |
12.2 |
0.42 |
417 |
6606 |
8.2 |
26.9 |
185600 |
18926 |
8.2 |
19.0 |
0.50 |
500 |
7926 |
9.8 |
32.2 |
265500 |
27073 |
11.7 |
27.1 |
0.58 |
583 |
9246 |
11.5 |
37.6 |
359600 |
36668 |
15.9 |
36.7 |
0.67 |
667 |
10569 |
13.1 |
43.0 |
467900 |
47712 |
20.7 |
47.8 |
0.75 |
750 |
11889 |
14.7 |
48.3 |
590400 |
60203 |
26.1 |
60.3 |
0.83 |
833 |
13209 |
16.4 |
53.7 |
727000 |
74132 |
32.1 |
74.3 |
Nominal Pipe Size: 12"
- Inside Diameter: 0.300 m (12.0 inches)
For full table with Pressure Drops - rotate the screen!
Steel Pipes Schedule 40 - Pressure Loss 12"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.02 |
20.0 |
317 |
0.28 |
0.91 |
200 |
20.4 |
0.009 |
0.02 |
0.02 |
21.7 |
344 |
0.30 |
0.98 |
300 |
30.6 |
0.01 |
0.03 |
0.02 |
23.3 |
370 |
0.32 |
1.1 |
300 |
30.6 |
0.01 |
0.03 |
0.03 |
25.0 |
396 |
0.35 |
1.1 |
400 |
40.8 |
0.02 |
0.04 |
0.03 |
26.7 |
423 |
0.37 |
1.2 |
400 |
40.8 |
0.02 |
0.04 |
0.03 |
28.3 |
449 |
0.39 |
1.3 |
500 |
51.0 |
0.02 |
0.05 |
0.03 |
30.0 |
476 |
0.42 |
1.4 |
500 |
51.0 |
0.02 |
0.05 |
0.03 |
31.7 |
502 |
0.44 |
1.4 |
600 |
61.2 |
0.03 |
0.06 |
0.03 |
33.3 |
528 |
0.46 |
1.5 |
600 |
61.2 |
0.03 |
0.06 |
0.04 |
36.7 |
581 |
0.51 |
1.7 |
800 |
81.6 |
0.04 |
0.08 |
0.04 |
40.0 |
634 |
0.55 |
1.8 |
900 |
91.8 |
0.04 |
0.09 |
0.04 |
43.3 |
687 |
0.60 |
2.0 |
1000 |
102 |
0.04 |
0.10 |
0.05 |
46.7 |
740 |
0.65 |
2.1 |
1200 |
122 |
0.05 |
0.12 |
0.05 |
50.0 |
793 |
0.69 |
2.3 |
1300 |
133 |
0.06 |
0.13 |
0.06 |
58.3 |
925 |
0.81 |
2.6 |
1800 |
184 |
0.08 |
0.18 |
0.07 |
66.7 |
1057 |
0.92 |
3.0 |
2300 |
235 |
0.10 |
0.23 |
0.08 |
75.0 |
1189 |
1.0 |
3.4 |
2800 |
286 |
0.12 |
0.29 |
0.08 |
83.3 |
1321 |
1.2 |
3.8 |
3500 |
357 |
0.15 |
0.36 |
0.10 |
100 |
1585 |
1.4 |
4.5 |
4900 |
500 |
0.22 |
0.50 |
0.12 |
117 |
1850 |
1.6 |
5.3 |
6500 |
663 |
0.29 |
0.66 |
0.13 |
133 |
2108 |
1.8 |
6.1 |
8400 |
857 |
0.37 |
0.86 |
0.15 |
150 |
2378 |
2.1 |
6.8 |
10500 |
1071 |
0.46 |
1.1 |
0.17 |
167 |
2643 |
2.3 |
7.6 |
12900 |
1315 |
0.57 |
1.3 |
0.20 |
200 |
3170 |
2.8 |
9.1 |
18300 |
1866 |
0.81 |
1.9 |
0.23 |
233 |
3698 |
3.2 |
10.6 |
24600 |
2508 |
1.1 |
2.5 |
0.27 |
267 |
4228 |
3.7 |
12.1 |
31800 |
3243 |
1.4 |
3.2 |
0.30 |
300 |
4756 |
4.2 |
13.6 |
40000 |
4079 |
1.8 |
4.1 |
0.33 |
333 |
5283 |
4.6 |
15.1 |
49000 |
4997 |
2.2 |
5.0 |
0.42 |
417 |
6606 |
5.8 |
18.9 |
75700 |
7719 |
3.3 |
7.7 |
0.50 |
500 |
7926 |
6.9 |
22.7 |
108100 |
11023 |
4.8 |
11.0 |
0.58 |
583 |
9246 |
8.1 |
26.5 |
149200 |
15214 |
6.6 |
15.2 |
0.67 |
667 |
10569 |
9.2 |
30.3 |
190000 |
19374 |
8.4 |
19.4 |
0.75 |
750 |
11889 |
10.4 |
34.0 |
239500 |
24422 |
10.6 |
24.5 |
0.83 |
833 |
13205 |
11.5 |
37.8 |
294700 |
30051 |
13.0 |
30.1 |
0.92 |
917 |
14532 |
12.7 |
41.6 |
355600 |
36261 |
15.7 |
36.3 |
1.00 |
1000 |
15852 |
13.8 |
45.4 |
422200 |
43052 |
18.7 |
43.1 |
1.08 |
1083 |
17172 |
15.0 |
49.2 |
494500 |
50424 |
21.9 |
50.5 |
Nominal Pipe Size: 14"
- Inside Diameter: 0.350 m (14.0 inches)
Steel Pipes Schedule 40 - Pressure Loss 14"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.03 |
30.0 |
476 |
0.34 |
1.1 |
300 |
31 |
0.013 |
0.03 |
0.03 |
31.7 |
502 |
0.36 |
1.2 |
400 |
41 |
0.018 |
0.04 |
0.03 |
33.3 |
528 |
0.38 |
1.3 |
400 |
41 |
0.018 |
0.04 |
0.04 |
36.7 |
581 |
0.42 |
1.4 |
500 |
51 |
0.022 |
0.05 |
0.04 |
40.0 |
634 |
0.46 |
1.5 |
600 |
61 |
0.027 |
0.06 |
0.04 |
43.3 |
687 |
0.50 |
1.6 |
600 |
61 |
0.027 |
0.06 |
0.05 |
46.7 |
740 |
0.54 |
1.8 |
700 |
71 |
0.031 |
0.07 |
0.05 |
50.0 |
793 |
0.57 |
1.9 |
800 |
82 |
0.035 |
0.08 |
0.06 |
58.3 |
925 |
0.67 |
2.2 |
1100 |
112 |
0.049 |
0.11 |
0.07 |
66.7 |
1057 |
0.76 |
2.5 |
1400 |
143 |
0.062 |
0.14 |
0.08 |
75.0 |
1189 |
0.86 |
2.8 |
1800 |
184 |
0.080 |
0.18 |
0.08 |
83.3 |
1321 |
0.96 |
3.1 |
2200 |
224 |
0.097 |
0.22 |
0.10 |
100 |
1585 |
1.1 |
3.8 |
3100 |
316 |
0.14 |
0.32 |
0.12 |
117 |
1850 |
1.3 |
4.4 |
4100 |
418 |
0.18 |
0.42 |
0.13 |
133 |
2108 |
1.5 |
5.0 |
5300 |
540 |
0.23 |
0.54 |
0.15 |
150 |
2378 |
1.7 |
5.6 |
6600 |
673 |
0.29 |
0.67 |
0.17 |
167 |
2643 |
1.9 |
6.3 |
8000 |
816 |
0.35 |
0.82 |
0.20 |
200 |
3170 |
2.3 |
7.5 |
11400 |
1162 |
0.50 |
1.2 |
0.23 |
233 |
3698 |
2.7 |
8.8 |
15300 |
1560 |
0.68 |
1.6 |
0.27 |
267 |
4228 |
3.1 |
10.0 |
19200 |
1958 |
0.85 |
2.0 |
0.30 |
300 |
4756 |
3.4 |
11.3 |
24800 |
2529 |
1.1 |
2.5 |
0.33 |
333 |
5283 |
3.8 |
12.5 |
30400 |
3100 |
1.3 |
3.1 |
0.42 |
417 |
6606 |
4.8 |
15.7 |
46800 |
4772 |
2.1 |
4.8 |
0.50 |
500 |
7926 |
5.7 |
18.8 |
66800 |
6812 |
3.0 |
6.8 |
0.58 |
583 |
9246 |
6.7 |
21.9 |
90300 |
9208 |
4.0 |
9.2 |
0.67 |
667 |
10569 |
7.6 |
25.1 |
117200 |
11951 |
5.2 |
12.0 |
0.75 |
750 |
11889 |
8.6 |
28.2 |
147700 |
15061 |
6.5 |
15.1 |
0.83 |
833 |
13205 |
9.6 |
31.3 |
181600 |
18518 |
8.0 |
18.5 |
0.92 |
917 |
14532 |
10.5 |
34.5 |
219100 |
22342 |
9.7 |
22.4 |
1.0 |
1000 |
15852 |
11.5 |
37.6 |
260000 |
26512 |
11.5 |
26.6 |
1.1 |
1083 |
17172 |
12.4 |
40.7 |
304400 |
31040 |
13.5 |
31.1 |
1.2 |
1167 |
18495 |
13.4 |
43.9 |
352300 |
35924 |
15.6 |
36.0 |
1.3 |
1250 |
19815 |
14.3 |
47.0 |
403700 |
41165 |
17.8 |
41.2 |
1.3 |
1333 |
21135 |
15.3 |
50.1 |
458600 |
46763 |
20.3 |
46.8 |
Nominal Pipe Size: 16"
- Inside Diameter: 0.400 m (16.0 inches)
Steel Pipes Schedule 40 - Pressure Loss - 16"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.05 |
50.0 |
793 |
0.44 |
1.4 |
400 |
41 |
0.018 |
0.04 |
0.06 |
58.3 |
925 |
0.51 |
1.7 |
600 |
61 |
0.027 |
0.06 |
0.07 |
66.7 |
1057 |
0.59 |
1.9 |
700 |
71 |
0.031 |
0.07 |
0.08 |
75.0 |
1189 |
0.66 |
2.2 |
900 |
92 |
0.040 |
0.09 |
0.08 |
83.3 |
1321 |
0.73 |
2.4 |
1100 |
112 |
0.049 |
0.11 |
0.10 |
100 |
1585 |
0.9 |
2.9 |
1600 |
163 |
0.07 |
0.16 |
0.12 |
117 |
1850 |
1.0 |
3.4 |
2100 |
214 |
0.09 |
0.21 |
0.13 |
133 |
2108 |
1.2 |
3.8 |
2700 |
275 |
0.12 |
0.28 |
0.15 |
150 |
2378 |
1.3 |
4.3 |
3400 |
347 |
0.15 |
0.35 |
0.17 |
167 |
2643 |
1.5 |
4.8 |
4100 |
418 |
0.18 |
0.42 |
0.20 |
200 |
3170 |
1.8 |
5.8 |
5800 |
591 |
0.26 |
0.6 |
0.23 |
233 |
3698 |
2.0 |
6.7 |
7800 |
795 |
0.34 |
0.8 |
0.27 |
267 |
4228 |
2.3 |
7.7 |
10100 |
1030 |
0.45 |
1.0 |
0.30 |
300 |
4756 |
2.6 |
8.6 |
12600 |
1285 |
0.6 |
1.3 |
0.33 |
333 |
5283 |
2.9 |
9.6 |
15400 |
1570 |
0.7 |
1.6 |
0.42 |
417 |
6606 |
3.7 |
12.0 |
23800 |
2427 |
1.1 |
2.4 |
0.50 |
500 |
7926 |
4.4 |
14.4 |
33800 |
3447 |
1.5 |
3.5 |
0.58 |
583 |
9246 |
5.1 |
16.8 |
45600 |
4650 |
2.0 |
4.7 |
0.67 |
667 |
10569 |
5.8 |
19.2 |
59200 |
6037 |
2.6 |
6.0 |
0.75 |
750 |
11889 |
6.6 |
21.6 |
74500 |
7597 |
3.3 |
7.6 |
0.83 |
833 |
13205 |
7.3 |
24.0 |
91600 |
9340 |
4.0 |
9.4 |
0.92 |
917 |
14532 |
8.0 |
26.4 |
110400 |
11257 |
4.9 |
11.3 |
1.0 |
1000 |
15852 |
8.8 |
28.8 |
130900 |
13348 |
5.8 |
13.4 |
1.1 |
1083 |
17172 |
9.5 |
31.2 |
153200 |
15622 |
6.8 |
15.6 |
1.2 |
1167 |
18495 |
10.2 |
33.6 |
177300 |
18079 |
7.8 |
18.1 |
1.3 |
1250 |
19815 |
11.0 |
35.9 |
203000 |
20700 |
9.0 |
20.7 |
1.3 |
1333 |
21135 |
11.7 |
38.3 |
230600 |
23514 |
10.2 |
23.6 |
Nominal Pipe Size: 18"
- Inside Diameter: 0.450 m (18.0 inches)
Steel Pipes Schedule 40 - Pressure Loss - 18"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.10 |
100 |
1585 |
0.7 |
2.3 |
900 |
92 |
0.04 |
0.09 |
0.12 |
117 |
1850 |
0.8 |
2.7 |
1200 |
122 |
0.05 |
0.12 |
0.13 |
133 |
2108 |
0.9 |
3.0 |
1500 |
153 |
0.07 |
0.15 |
0.15 |
150 |
2378 |
1.0 |
3.4 |
1500 |
153 |
0.07 |
0.15 |
0.17 |
167 |
2643 |
1.2 |
3.8 |
2300 |
235 |
0.10 |
0.23 |
0.20 |
200 |
3170 |
1.4 |
4.5 |
3200 |
326 |
0.14 |
0.3 |
0.23 |
233 |
3698 |
1.6 |
5.3 |
4300 |
438 |
0.19 |
0.4 |
0.27 |
267 |
4228 |
1.8 |
6.1 |
5600 |
571 |
0.25 |
0.6 |
0.30 |
300 |
4756 |
2.1 |
6.8 |
7000 |
714 |
0.3 |
0.7 |
0.33 |
333 |
5283 |
2.3 |
7.6 |
8500 |
867 |
0.4 |
0.9 |
0.42 |
417 |
6606 |
2.9 |
9.5 |
13100 |
1336 |
0.6 |
1.3 |
0.50 |
500 |
7926 |
3.5 |
11.4 |
18600 |
1897 |
0.8 |
1.9 |
0.58 |
583 |
9246 |
4.0 |
13.3 |
25100 |
2559 |
1.1 |
2.6 |
0.67 |
667 |
10569 |
4.6 |
15.1 |
32500 |
3314 |
1.4 |
3.3 |
0.75 |
750 |
11889 |
5.2 |
17.0 |
40900 |
4171 |
1.8 |
4.2 |
0.83 |
833 |
13205 |
5.8 |
18.9 |
50200 |
5119 |
2.2 |
5.1 |
0.92 |
917 |
14532 |
6.4 |
20.8 |
60400 |
6159 |
2.7 |
6.2 |
1.00 |
1000 |
15852 |
6.9 |
22.7 |
71600 |
7301 |
3.2 |
7.3 |
1.08 |
1083 |
17172 |
7.5 |
24.6 |
83800 |
8545 |
3.7 |
8.6 |
1.17 |
1167 |
18495 |
8.1 |
26.5 |
96900 |
9881 |
4.3 |
9.9 |
1.25 |
1250 |
19815 |
8.7 |
28.4 |
110900 |
11308 |
4.9 |
11.3 |
1.33 |
1333 |
21135 |
9.2 |
30.3 |
125900 |
12838 |
5.6 |
12.9 |
Nominal Pipe Size: 20"
- Inside Diameter: 0.500 m (20.0 inches)
For full table with Pressure Drops - rotate the screen!
Steel Pipes Schedule 40 - Pressure Loss - 20"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.17 |
167 |
2643 |
0.9 |
3.1 |
1300 |
133 |
0.06 |
0.13 |
0.20 |
200 |
3170 |
1.1 |
3.7 |
1900 |
194 |
0.08 |
0.2 |
0.23 |
233 |
3698 |
1.3 |
4.3 |
2500 |
255 |
0.11 |
0.3 |
0.27 |
267 |
4228 |
1.5 |
4.9 |
3200 |
326 |
0.14 |
0.3 |
0.30 |
300 |
4756 |
1.7 |
5.5 |
4100 |
418 |
0.2 |
0.4 |
0.33 |
333 |
5283 |
1.9 |
6.1 |
5000 |
510 |
0.2 |
0.5 |
0.42 |
417 |
6606 |
2.3 |
7.6 |
7600 |
775 |
0.3 |
0.8 |
0.50 |
500 |
7926 |
2.8 |
9.1 |
10800 |
1101 |
0.5 |
1.1 |
0.58 |
583 |
9246 |
3.3 |
10.7 |
14500 |
1479 |
0.6 |
1.5 |
0.67 |
667 |
10569 |
3.7 |
12.2 |
18700 |
1907 |
0.8 |
1.9 |
0.75 |
750 |
11889 |
4.2 |
13.7 |
23600 |
2406 |
1.0 |
2.4 |
0.83 |
833 |
13205 |
4.6 |
15.2 |
28900 |
2947 |
1.3 |
3.0 |
0.92 |
917 |
14532 |
5.1 |
16.8 |
34800 |
3549 |
1.5 |
3.6 |
1.00 |
1000 |
15852 |
5.6 |
18.3 |
41200 |
4201 |
1.8 |
4.2 |
1.08 |
1083 |
17172 |
6.0 |
19.8 |
48200 |
4915 |
2.1 |
4.9 |
1.17 |
1167 |
18495 |
6.5 |
21.3 |
55700 |
5680 |
2.5 |
5.7 |
1.25 |
1250 |
19815 |
7.0 |
22.9 |
63700 |
6495 |
2.8 |
6.5 |
1.33 |
1333 |
21135 |
7.4 |
24.4 |
72300 |
7372 |
3.2 |
7.4 |
Nominal Pipe Size: 24"
- Inside Diameter: 0.600 m (24.0 inches)
Steel Pipes Schedule 40 - Pressure Loss - 24"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.30 |
300 |
4756 |
1.1 |
3.7 |
1600 |
163 |
0.1 |
0.2 |
0.33 |
333 |
5283 |
1.3 |
4.2 |
2000 |
204 |
0.1 |
0.2 |
0.42 |
417 |
6606 |
1.6 |
5.3 |
3000 |
306 |
0.1 |
0.3 |
0.50 |
500 |
7926 |
1.9 |
6.3 |
4300 |
438 |
0.2 |
0.4 |
0.58 |
583 |
9246 |
2.2 |
7.4 |
5700 |
581 |
0.3 |
0.6 |
0.67 |
667 |
10569 |
2.6 |
8.4 |
7400 |
755 |
0.3 |
0.8 |
0.75 |
750 |
11889 |
2.9 |
9.5 |
9300 |
948 |
0.4 |
0.9 |
0.83 |
833 |
13205 |
3.2 |
10.5 |
11400 |
1162 |
0.5 |
1.2 |
0.92 |
917 |
14532 |
3.5 |
11.6 |
13700 |
1397 |
0.6 |
1.4 |
1.00 |
1000 |
15852 |
3.9 |
12.6 |
16200 |
1652 |
0.7 |
1.7 |
1.08 |
1083 |
17172 |
4.2 |
13.7 |
18900 |
1927 |
0.8 |
1.9 |
1.17 |
1167 |
18495 |
4.5 |
14.8 |
21800 |
2223 |
1.0 |
2.2 |
1.25 |
1250 |
19815 |
4.8 |
15.8 |
24900 |
2539 |
1.1 |
2.5 |
1.33 |
1333 |
21135 |
5.1 |
16.9 |
28300 |
2886 |
1.3 |
2.9 |
Nominal Pipe Size: 32"
- Inside Diameter: 0.800 m (32.0 inches)
Steel Pipes Schedule 40 - Pressure Loss - 32"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.50 |
500 |
7926 |
1.1 |
3.5 |
900 |
92 |
0.0 |
0.1 |
0.58 |
583 |
9246 |
1.2 |
4.0 |
1300 |
133 |
0.1 |
0.1 |
0.67 |
667 |
10569 |
1.4 |
4.6 |
1600 |
163 |
0.1 |
0.2 |
0.75 |
750 |
11889 |
1.6 |
5.2 |
2000 |
204 |
0.1 |
0.2 |
0.83 |
833 |
13205 |
1.8 |
5.8 |
2500 |
255 |
0.1 |
0.3 |
0.92 |
917 |
14532 |
1.9 |
6.3 |
3000 |
306 |
0.1 |
0.3 |
1.00 |
1000 |
15852 |
2.1 |
6.9 |
3500 |
357 |
0.2 |
0.4 |
1.08 |
1083 |
17172 |
2.3 |
7.5 |
4100 |
418 |
0.2 |
0.4 |
1.17 |
1167 |
18495 |
2.5 |
8.1 |
4700 |
479 |
0.2 |
0.5 |
1.25 |
1250 |
19815 |
2.6 |
8.6 |
5400 |
551 |
0.2 |
0.6 |
1.33 |
1333 |
21135 |
2.8 |
9.2 |
6100 |
622 |
0.3 |
0.6 |
Nominal Pipe Size: 36"
- Inside Diameter: 0.900 m (36.0 inches)
Steel Pipes Schedule 40 - Pressure Loss - 36"
Flow | Velocity | Pressure Drop |
(m3/s) | (liter/s) | (US gpm) | (m/s) | (ft/s) | (Pa/100m) | (mmH2O/100m) | (psi/100ft) | (ftH2O/100ft) |
0.75 |
750 |
11889 |
1.2 |
4.1 |
1100 |
112 |
0.0 |
0.1 |
0.83 |
833 |
13205 |
1.4 |
4.5 |
1400 |
143 |
0.1 |
0.1 |
0.92 |
917 |
14532 |
1.5 |
5.0 |
1600 |
163 |
0.1 |
0.2 |
1.00 |
1000 |
15852 |
1.7 |
5.4 |
1900 |
194 |
0.1 |
0.2 |
1.08 |
1083 |
17172 |
1.8 |
5.9 |
2300 |
235 |
0.1 |
0.2 |
1.17 |
1167 |
18495 |
1.9 |
6.3 |
2600 |
265 |
0.1 |
0.3 |
1.25 |
1250 |
19815 |
2.1 |
6.8 |
3000 |
306 |
0.1 |
0.3 |
1.33 |
1333 |
21135 |
2.2 |
7.3 |
3400 |
347 |
0.2 |
0.3 |