|
Using
the Distant Water Source Table
| Chart 1 |
| Length
of 5" Hose |
Lift
|
Pump
Discharge Pressure
|
Max.
Avail. Fire Flow
|
| 50'
|
10'
|
175
psig
|
670 GPM
|
|
20'
|
175
psig
|
470
GPM
|
| 100' |
10'
|
180
psig
|
570
GPM
|
|
20'
|
180
psig
|
400
GPM
|
| 150' |
10'
|
185
psig
|
480
GPM
|
|
20'
|
185
psig
|
325
GPM
|
| 200' |
10'
|
190
psig
|
440
GPM
|
|
20'
|
190
psig
|
280
GPM
|
|
1. Determine the required hose length (use the longer of the two
if two TurboDraft
units will be used). Refer to Chart 2 below for
friction loss in hose line.
2.
Estimate or measure the required lift. This is best done by pre-planning
water
source and actual measurement is preferred, as lifts can be
visually deceiving.
Hint:
Place a pressure gauge on the end of a hose line. Place the gauge
at water's edge and the opposite end of hose at truck elevation.
Fill hose with water leaving the truck end open to atmosphere. The
lift can be estimated by multiplying the pressure gauge reading
(psi) by 2.3.
3.
Read across and determine the required discharge pressure for the
TurboDraft's
2 1/2 inch line and the maximum available fire flow.
|
