©Copyright Task Force Tips LLC 2000-2020 LIM-025 June 23, 2010 Rev08
6
4.0 USE OF MAX SERIES NOZZLES
IT IS THE RESPONSIBILITY OF THE INDIVIDUAL FIRE DEPARTMENT OR AGENCY TO DETERMINE PHYSICAL CAPABILITIES
AND SUITABILITY FOR AN INDIVIDUAL’S USE OF THIS EQUIPMENT.
Many factors contribute to the extinguishment of a re. Among the most important is delivering water at a ow rate sucient to absorb
heat faster than it is being generated. The ow rate depends largely on the pump discharge pressure and hose friction loss. It can be
calculated using a hydraulic equation such as:
PDP = NP+FL+DL+EL
PDP = Pump discharge pressure in PSI
NP = Nozzle pressure in PSI
FL = Hose friction loss in PSI
DL = Device loss in PSI
EL = Elevation loss in PSI
This Safety Manual is not intended as a substitute for proper training in the
use of rescue systems as taught from credible sources such as the National
Fire Protection Association
(NFPA), the International Fire Service Training Association
(IFSTA), or sources approved by the Authority Having Jurisdiction (AHJ).
5.0 FLOW CHARACTERISTICS
The following graphs show typical performance of the various models of Max Series nozzles.
100 PSI MAX-MATIC & MAX-FORCE
0
20
40
60
80
100
120
0 100 200 300 400 500
FLOW (GPM)
0
1
2
3
4
5
6
7
8
0 400 800 1200 1600 2000
FLOW (LPM)
LOW PRESSURE MODE
55 PSI (4 BAR)
100 PSI (7 BAR) MAX-FORCE
100 PSI (7 BAR) MAX-MATIC
OPERATING ENVELOPE
PER NFPA 1964
PRESSURE BAR
Figure 5.0A
80 PSI MAX-MATIC
0
20
40
60
80
100
120
0 100 200 300 400 500
FLOW (GPM)
0
1
2
3
4
5
6
7
8
0 400 800 1200 1600 2000
FLOW (LPM)
OPERATING ENVELOPE
PER NFPA 1964
80 PSI (5.5 BAR) MAX-MATIC
PRESSURE BAR
Figure 5.0B
100 PSI MAX-FLOW
0
20
40
60
80
100
120
0 100 200 300 400 500
FLOW (GPM)
0
1
2
3
4
5
6
7
8
0 400 800 1200 1600 2000
FLOW (LPM)
PRESSURE PSI
PRESSURE BAR
100 PSI (7 BAR) MAX-FLOW
Figure 5.0C
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