©Copyright Task Force Tips LLC 2010-2021
7
LIU-330 February 15, 2021 Rev09
5.3 FOAM CONSUMPTION
The following tables indicate the theoretical foam concentrate flow rate and the time it will take to empty a 5 gallon (18.9 liters) container
of various concentrates with eductors of different ratings.
TESTING NOTES:
1. The Class A foam used for calibration is the “Knock Down” from National Foam. The calibration viscosity is 20 Centipoise.
2. The class B foam used for calibration is the “Universal Plus 3%/6% Alcohol Resistant Aqueous Film Forming Foam” (AR-AFFF)
from National Foam. The calibration viscosity is 2892 Centipoise tested with Brookfield #3 Spindle @ 30 rpm.
3. TFT’s eductors were calibrated with 1 ¾” Conquest Hose.
- UE-060-NF calibration hose length is 300 ft.
- UE-095-NF calibration hose length is 250 ft.
- UE-125-NF calibration hose length is 150 ft.
60 GPM (225 L/min) Eductor
95 GPM (360 L/min) Eductor
Setting Foam
Class
Time to Empty
5 Gallons
Foam Flow
Rate
Setting Foam
Class
Time to Empty
5 Gallons
Foam Flow
Rate
1/4%
A
33 min 20 sec
0.15 gpm
(.057 L/min)
1/4%
A
20 min 50 sec
0.24 gpm
(0.9 L/min)
1/2%
A
16 min 40 sec
0.3 gpm
(1.14 L/min)
1/2%
A
10 min 25 sec
0.5 gpm
(1.89 L/min)
1%
B
8 min 20 sec
0.6 gpm
(2.27 L/min)
1%
B
5 min 16 sec
1.0 gpm
(3.78 L/min)
3%
B
2 min 47 sec
1.8 gpm
(6.81 L/min)
3%
B
1 min 45 sec
2.9 gpm
(10.97 L/min)
6%
B
1 min 23 sec
3.6 gpm
(13.62 L/min)
6%
B
53 sec
5.7 gpm
(28.38 L/min)
120 GPM (450 L/min) Eductor
125 GPM (475 L/min) Eductor
Setting Foam
Class
Time to Empty
5 Gallons
Foam Flow
Rate
Setting Foam
Class
Time to Empty
5 Gallons
Foam Flow
Rate
1/4%
A
16 min 40 sec
0.29 gpm
(1.09 L/min)
1/4%
A
16 min
0.3 gpm
(1.14 L/min)
1/2%
A
8 min 20 sec
0.58 gpm
(2.18 L/min)
1/2%
A
8 min
0.6 gpm
(2.27 L/min)
1%
B
4 min 10 sec
1.25 gpm
(4.72 L/min)
1%
B
4 min
1.3 gpm
(4.92 L/min)
3%
B
1 min 23 sec
3.65 min
(13.8 L/min)
3%
B
1 min 20 sec
3.8 gpm
(14.38 L/min)
6%
B
42 sec
7.2 gpm
(27.25 L/min)
6%
B
40 sec
7.5 gpm
(28.38 L/min)
Actual calibrated rate for each setting and
the foam concentration used for calibration
Setting
Actual
Rate
Foam
Class
UL-162
Tolerance
1/4%
0.287%
A
.25 - .325%
1/2%
0.575%
A
.5 - .65%
1%
1.15%
B
1 - 1.3%
3%
3.45%
B
3 - 3.9%
6%
6.5%
B
6 - 7%
