Orifice Plate Calibration Information; Flow Characteristics; Fixed Flow - Task Force Tips Master Foam Series Instructions For Installation, Operation And Maintenance

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:
250, 350, 500, and 750 gpm Nozzles
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.
500 1000
0
200
175
150
125
350 GPM
100
75 250 GPM
50
25
0
0 100 200 300
OPERATING RANGE:
150 psi (10.3 bar)MAXIMUM
50 psi (3.4 bar)MINIMUM
©Copyright Task Force Tips LLC 2015-2020
PERCENT
0.5% and 1%
3%
6%
PERCENT
1000 and 1250 gpm Nozzles
1%
3%
PERCENT
1500 and 2000 gpm Nozzles
1%
3%
1500 2000 2500 3000
500 GPM
750 GPM
400 500 600 700 800
BURST PRESSURE
1000 psi (68.9 bar)
FOAM USED FOR CALIBRATION
Class A foam of 20 centipoise viscosity
3M ATC 3 AR-AFFF product code ATC-603
3M ATC-AFFF product code FC-600F
FOAM USED FOR CALIBRATION
Williams Thunderstorm ATC AR-AFFF FC-
Williams Thunderstorm ATC AR-AFFF FC-
FOAM USED FOR CALIBRATION
National Universal Gold NFC420
National Universal Gold NFC420
Table 5.3.3
FLOW (l/min)
3500 4000 4500 5500
5000
1000 GPM
1250 GPM
900 1000 1100 1200 1300 1400
FLOW (gpm)
Figure 6.1A
11
601A
601A
6000 6500 7000 7500
1500 GPM
Table 5.3
1500 1600 1700 1800 1900 2000
LIZ-030 October 29, 2020 Rev13
8000 8500
9000
13
12
11
10
9
2000 GPM
8
7
6
5
4
3
2
1
0
2100 2200 2300