Auspex Fire
Pressure Loss

The Auspex Fire pipe and fitting system provides a revolutionary solution to meet new standard requirements in the fire industry.

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.

20mm to 32mm Pipe
Pipe Size 20mm 25mm 32mm
Flow
Velocity
(m/s)
Volumetric
Flow
(L/s)
Pressure
Loss
(kPa)
Volumetric
Flow
(L/s)
Pressure
Loss
(kPa/m)
Volumetric
Flow
(L/s)
Pressure
Loss
(kPa)
0.5 0.09 0.26 0.15 0.20 0.24 0.15
0.6 0.11 0.37 0.18 0.28 0.28 0.21
0.7 0.13 0.50 0.20 0.36 0.33 0.28
0.8 0.14 0.63 0.23 0.47 0.38 0.36
0.9 0.16 0.78 0.26 0.59 0.43 0.45
1.0 0.18 0.96 0.29 0.72 0.47 0.55
1.2 0.21 1.34 0.35 1.00 0.57 0.76
1.4 0.25 1.78 0.41 1.33 0.66 1.01
1.6 0.29 2.28 0.47 1.71 0.76 1.30
1.8 0.32 2.83 0.53 2.12 0.85 1.61
2.0 0.36 3.43 0.59 2.58 0.95 1.96
2.5 0.44 5.2 0.73 3.90 1.18 2.96
3.0 0.53 7.29 0.88 5.45 1.41 4.14
3.5 0.62 9.73 1.00 7.28 1.65 5.51
4.0 0.71 12.43 1.17 9.31 1.89 7.06
4.5 0.80 15.44 1.32 11.58 2.12 8.79
5.0 0.89 18.81 1.46 14.08 2.36 10.68
Size Mean OD Min Wall Max Mean ID
20mm 20.0 2.3 15.7
25mm 25.0 2.8 19.7
32mm 32.0 3.7 24.5
Factor 1.20 1.14 1.10 1.05 1.02 0.98 0.95
Water °C 20 30 40 50 60 80 90

Water Pressure Loss