Task Force Tips Master Foam Series, Instructions For Installation, Operation And Maintenance, Page: 11 / 16

©Copyright Task Force Tips LLC 2015-2020 11 LIZ-030 October 29, 2020 Rev13
5.3.3 ORIFICE PLATE CALIBRATION INFORMATION
In any eductor type system, the accuracy of proportioning depends on the viscosity of the foam concentrate. The orifice plates for the
Master Foam nozzle have been calibrated at 70 degrees F as follows:
Table 5.3.3
6.0 FLOW CHARACTERISTICS
6.1 FIXED FLOW
Pressure on this 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 flow entering the nozzle. Any foam educted adds to this flow.
Figure 6.1A
PERCENT
250, 350, 500, and 750 gpm Nozzles
FOAM USED FOR CALIBRATION
0.5% and 1% Class A foam of 20 centipoise viscosity
3% 3M ATC 3 AR-AFFF product code ATC-603
6% 3M ATC-AFFF product code FC-600F
PERCENT
1000 and 1250 gpm Nozzles
FOAM USED FOR CALIBRATION
1% Williams Thunderstorm ATC AR-AFFF FC-
601A
3% Williams Thunderstorm ATC AR-AFFF FC-
601A
PERCENT
1500 and 2000 gpm Nozzles
FOAM USED FOR CALIBRATION
1% National Universal Gold NFC420
3% National Universal Gold NFC420
0
50
100
150
200
0 200 400 600 800 1000 1200
175
125
75
25
100 500 700 900 1100 300 1300
5000 0 500 1000 1500 2000 2500 3000 3500 4000 4500
FLOW (gpm)
OPERATING RANGE:
150 psi (10.3 bar)MAXIMUM
50 psi (3.4 bar)MINIMUM
PRESSURE (psi)
BURST PRESSURE
1000 psi (68.9 bar)
FLOW (l/min)
1400 1600 1800 2000 2200 1500 1700 1900 2100 2300
9000 5500 6000 6500 7000 7500 8000 8500
0
5
10
3
7
6
8
9
4
2
1
11
12
13
PRESSURE (bar)
1000 GPM
750 GPM
1250 GPM
500 GPM
350 GPM
250 GPM
1500 GPM 2000 GPM
Table 5.3