Duopex Water

Water pressure loss table

Calculation of potable water - principals

Pressure loss table for DUOPEX WATER pipe at a fluid temperature of 10°c

Pipe Size 32 x 3.0 40 x 3.5
Flow Velocity Volumetric flow Pressure Loss Volumetric flow Pressure Loss
V V R V R
(m/s) (I/s) (kPa/m) (I/s) (kPa/m)
0.5 0.27 0.15 0.43 0.11
0.6 0.32 0.21 0.51 0.15
0.7 0.37 0.27 0.6 0.2
0.8 0.42 0.34 0.68 0.25
0.9 0.48 0.42 0.77 0.31
1 0.53 0.5 0.88 0.37
1.2 0.64 0.7 1.03 0.52
1.4 0.74 0.91 1.2 0.68
1.6 0.85 1.17 1.37 0.86
1.8 0.96 1.45 1.54 1.07
2 1.06 1.75 1.71 1.3
2.5 1.33 2.61 2.14 1.97
3 1.59 3.65 2.57 2.75
3.5 1.86 4.9 2.99 3.64
4 2.12 6.21 3.42 4.61
4.5 2.39 7.71 3.85 5.77
5 2.65 9.33 4.28 6.97



Calculation of potable water - principals (cont.)

Pressure loss table for DUOPEX WATER pipe at a fluid temperature of 10°c

Pipe Size50 x 4.0 63 x 4.5
Flow VelocityVolumetric flow Pressure Loss Volumetric flow Pressure Loss
V V R V R
(m/s)(I/s) (kPa/m) (I/s) (kPa/m)
0.5 0.69 0.08 1.15 0.06
0.6 0.83 0.11 1.37 0.08
0.7 0.97 0.15 1.6 0.11
0.8 1.11 0.19 1.83 0.14
0.9 1.25 0.23 2.06 0.17
1 1.39 0.28 2.29 0.2
1.2 1.66 0.38 2.75 0.28
1.4 1.94 0.51 3.21 0.38
1.6 2.22 0.65 3.66 0.49
1.8 2.49 0.81 4.12 0.59
2 2.77 0.99 4.58 0.72
2.5 3.46 1.48 5.73 1.07
3 4.16 2.05 6.87 1.49
3.5 4.85 2.73 8.02 1.99
4 5.54 3.5 9.16 2.55
4.5 6.23 4.31 10.31 3.15
5 6.93 5.27 11.45 3.82