Elkhart Brass Sidewinder 8494 Monitor - Manual (Page 20)

16
In the firefighting industry, the terms Total Static Pressure Drop and Friction Loss tend to be
used interchangeably. However, these are significantly different measurements. This
misconception could ultimately lead to lower than anticipated performance from equipment.
When designing a system and determining performance, Total Static Pressure Drop is
the value that should always be used.
The Friction Loss curve is also supplied in order to
make a comparison with competitor products that may only supply Friction Loss curves. If
there are any further questions regarding this matter, please contact Elkhart Brass.
8494 Sidewinder Losses
2.0" Inlet & 1.5" Outlet
0
5
10
15
20
25
30
35
40
45
50
0 50 100 150 200 250 300 350 400 450
Flow Rate (GPM)
P
ressure (P
S
I)
Total Static Pressure Drop Friction Loss
Figure 18
8494 Monitor Friction Loss
ΔP
S
= H
F
+ ΔP
V
ΔP
S
= Total Static Pressure Drop
H
F
= Friction Loss
ΔP
V
= Velocity Pressure Loss