0
0
10
10
20
20
30
40
50
60
70
80
0
0
20
10
40
20
60
30
80
40
100
50
120
60
140
70
160
80
90
180 200 220 240 260 280 300
HORIZONTAL DISTANCE (FEET)
VERTICAL
DIST
ANCE
(FEET)
METERS
METERS
A
B
C
D
E
MASTER, 100 PSI (7 BAR, 700 KPA )
8
Step 3: Calculate flow with automatic nozzle.
Using the pressure loss constant from step 2 and the following equation, the flow with an automatic nozzle can be
calculated for your particular installation.
Where:
automatic nozzle flow in GPM (or LPM)
nominal nozzle operating pressure in PSI (or BAR)
Mount a graph or table of the results adjacent to the in-line pressure gauge. Deliver any desired flow by adjustment of
pump pressure.
Q
P
auto
auto
Q
= (P
- P )C
auto
in-line
auto
Figures 4A and 4B give the stream trajectory for the Master, Monsoon and Typhoon nozzles at various flows.
Notes on trajectory graphs:
• Graphs show approximate effective stream trajectory at 30 degrees elevation in no wind
conditions. Distance to last water drops approximately 10% farther.
• Trajectories shown are for water. The addition of foam is expected to decrease the reach by 10%.
• Tail or head winds of 20 MPH (30 KPH) may increase or decrease the range approximately 30%.
• Stream trajectory of Typhoon based on "The Trajectories of Large Fire Fighting Jets" by A.P. Hatton
and M.J. Osborne, Reference: "The International Journal of Heat and Fluid Flow", Vol 1 No 1.
3.4 STREAM TRAJECTORY DATA
FIG 4A - Master and Monsoon Stream Trajectory
CURVE
A
B
C
D
E
CURVE
A
B
C
D
E
GPM
FLOW
300
400
500
800
1000
LPM
FLOW
1100
1500
1900
3000
3800
LBS
REACTION
150
200
260
400
510
KGF
REACTION
70
90
120
180
230
CURVE
A
B
C
D
E
CURVE
A
B
C
D
E
GPM
FLOW
300
600
1000
1500
2000
LPM
FLOW
1100
2300
3800
5700
7500
LBS
REACTION
160
300
510
760
1000
KGF
REACTION
70
140
230
340
450
0
10
20
30
40
50
60
70
80
90
METERS
0
10
20
METERS
0
10
20
30
40
50
60
70
80
0
20
40
60
80
100 120 140 160 180 200 220 240 260 280 300
HORIZONTAL DISTANCE (FEET)
A
B
C
D
E
MONSOON, 100 PSI (7 BAR, 700 KPA)
VERTICAL
DIST
ANCE
(FEET)
EXCEL\MISC\RAN_MON
EXCEL\MISC\RANMAST
LIM-030 November 22, 1999 Rev 1
©Copyright Task Force Tips, Inc. 1999
