Flow Characteristics; Fixed Flow; Use With Foam - Task Force Tips MASTER FOAM Series Instructions For Safe Operation And Maintenance

4.0 FLOW CHARACTERISTICS

4.1 FIXED FLOW

Figure 4.1 gives the fl ow characteristics of the MASTER FOAM nozzle. Pressure on the graph is the nozzle inlet pressure. Losses
through piping and monitor must be taken into account to deliver the desired pressure to the nozzle. Flow on the graph is the water
fl ow entering the nozzle. Any foam educted adds to this fl ow.
500 1000 1500
0
200
175
150
125 350 GPM
100
250 GPM
75
50
25
0
100 300
0 200 400
OPERATING RANGE:
150 psi (10.3 bar)MAXIMUM
50 psi (3.4 bar)MINIMUM
An inadequate supply of nozzle pressure and/or fl ow will cause an ineff ective stream and can
CAUTION
result in injury, death or loss of property. See fl ow graph or call 800-348-2686 for assistance.

4.2 USE WITH FOAM

Refer to fi re service training for the proper use of foam.
WARNING
WARNING
WARNING
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FLOW (l/min)
2000 2500 3000 3500
500 GPM
750 GPM
500 700 900
600 800 1000
FLOW (gpm)
BURST PRESSURE
1000 psi (68.9 bar)
Fig 4.1 MASTER FOAM Flows
For Class B fi res, lack of foam or interruption in the foam stream can cause a break in the foam
blanket and greatly increase the risk of injury or death.
Assure that:
• Application rate is suffi cient (see NFPA 11 or foam manufacturer's recommendations)
• Enough concentrate is on hand to complete task (see NFPA for minimum duration time
requirements)
• Foam logistics have been carefully planned.
Allow for such things as:
• Storage of foam in a location not exposed to the hazard it protects
• Personnel, equipment, and technique to deliver foam at a rapid enough rate
• Removal of empty foam containers
• Clear path to deliver foam, as hoses and other equipment and vehicles are deployed
Improper use of foam can result in injury or damage to the environment. Follow foam
manufacturer's instructions and fi re service training to avoid:
• Using wrong type of foam on a fi re, i.e. Class A foam on a Class B fi re.
• Mishandling of concentrates, some of which are fl ammable.
• Plunging foam into pools of burning liquid fuels.
• Causing environmental damage.
• Directing stream at personnel.
There are a wide variety of foam concentrates. Each user is responsible for verifying that any
foam concentrate chosen is suitable for the purpose intended.
4000 4500
5000 5500 6000
1000 GPM
1250 GPM 1500 GPM
1100 1300 1400
1200 1500
9
6500 7000 7500 8000
2000 GPM
1600 1800 2000
1700 1900 2100
LIZ-030 March 8, 2018 Rev12
8500 9000
13
12
11
10
9
8
7
6
5
4
3
2
1
0
2200 2300