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Auspex Fire Manual
Auspex Fire Fitting Pressure Drop
Pressure losses due to individual resistances can be
calculated based on the loss coefficients and based on the
equivalent pipe lengths of the individual resistances.
These value equivalents are then added to the pipe lengths
of the respective pipe sections to then calculate the
total resistance.
Individual Resistance
Graphic
Symbol
Fittings Equivalent
Pipe Length (FEPL)
20
25
32
Coupling
0.38
0.55
0.5
Elbow
(90°)
3.8
2.6
3.0
Tee,
Run Flow
Separation
0.41
0.55
0.6
Tee,
Branch
Flow
Separation
4.26
2.8
3.0
Tee,
Transition
Flow
Separation
4.26
2.8
3.0
Reduction
14.0
(32mm)
4.6
(25mm)
2.8
–
Pressure Losses Due to Individual Resistances
(Standard Auspex Fittings)