Auspex Fire Manual - Page 6

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Water Pressure Loss
Calculation of Potable Water – Principals
The following tables show Pressure Loss for Auspex Fire pipe
at a fluid temperature of 10°C.
Pipe
Size
Flow
Volumetric
Velocity
Flow
(m/s)
(L/s)
0.5
0.09
0.6
0.11
0.7
0.13
0.8
0.14
0.9
0.16
1.0
0.18
1.2
0.21
1.4
0.25
1.6
0.29
1.8
0.32
2.0
0.36
2.5
0.44
3.0
0.53
3.5
0.62
4.0
0.71
4.5
0.80
5.0
0.89
Size
20mm
25mm
32mm
Factor
1.20
Water °C
20
4
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Auspex Fire Manual
20mm
Pressure
Volumetric
Loss
Flow
(kPa)
(L/s)
0.26
0.15
0.37
0.18
0.50
0.20
0.63
0.23
0.78
0.26
0.96
0.29
1.34
0.35
1.78
0.41
2.28
0.47
2.83
0.53
3.43
0.59
5.20
0.73
7.29
0.88
9.73
1.00
12.43
1.17
15.44
1.32
18.81
1.46
Mean OD
20.0
25.0
32.0
1.14
1.10
30
40
25mm
Pressure
Volumetric
Loss
Flow
(kPa/m)
(L/s)
0.20
0.24
0.28
0.28
0.36
0.33
0.47
0.38
0.59
0.43
0.72
0.47
1.00
0.57
1.33
0.66
1.71
0.76
2.12
0.85
2.58
0.95
3.90
1.18
5.45
1.41
7.28
1.65
9.31
1.89
11.58
2.12
14.08
2.36
Min Wall
2.3
2.8
3.7
1.05
1.02
50
60
32mm
Pressure
Loss
(kPa)
0.15
0.21
0.28
0.36
0.45
0.55
0.76
1.01
1.30
1.61
1.96
2.96
4.14
5.51
7.06
8.79
10.68
Max Mean ID
15.7
19.7
24.5
0.98
0.95
80
90