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7
6
5
4
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2
1
0
Note: In any eductor type system the accuracy of proportioning depends on the viscosity of the foam concentrate. The orifi ce plates
for the MASTER FOAM nozzle have been calibrated at 70 degrees F as follows:
CAUTION
3.5.3 CONCENTRATE HOSE CONNECTION
Remove the nut on top of the percentage knob and lift the knob to select the proper foam concentrate type. Replace the knob nut.
Turn the knob to the desired concentrate percentage. The percentage knob may be turned to the OFF position for water only use.
Be sure to use the foam manufacturer's recommended concentrate ratio.
©Copyright Task Force Tips, Inc. 2003 - 2011
NOMINAL 0.5%
AT 100 PSI
40
60
80
NOZZLE INLET PRESSURE (PSI)
Fig 2.5.2b Proportioning Accuracy With Pressure Variation
PERCENT
0.5% and 1%
3%
3M ATC 3 AR-AFFF product code ATC-603
6%
Foam pickup in the widest fog position (90°) is not guaranteed.
NOMINAL 6%
AT 100 PSI
NOMINAL 3%
AT 100 PSI
NOMINAL 1%
AT 100 PSI
100
120
FOAM USED FOR CALIBRATION
Class A foam of 20 centipoise viscosity
3M ATC-AFFF product code FC-600F
7
140
160
LIZ-030 September 27, 2011 Rev07
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