The Around The Pump Eductor is a fundamental, economical, yet proven way to produce foam on a fire truck. In operation a portion of the fire water discharge is diverted to the eductor. The eductor picks up foam concentrate from the on-board atmospheric foam tank and delivers it to the suction side of the water pump. A metering valve such as the Multiport Metering Valve controls the amount of concentrate entering the system. This, along with the rate of discharge, determines the solution flow rate; typically from 1% to 6%. All discharges in this type of system will produce foam solution. Eductors are constructed of brass to provide years of trouble free service.
| 2” | 3” | |
|---|---|---|
| A | 7.5” | 10” |
| B | 3.875” | 5.0625” |
| C | 2.8125” | 2.6875” |
| D | 2.625” | 3.3125” |
| E | 1.5” | 2” |
| F | 2” | 3” |
| G | 10” | 15” |
| Part # | Ratio Controller Size | Configuration | Nominal Concentrate Flow | Maximum Proportioning Rates (gpm)
3% |
Maximum Proportioning Rates (gpm)
6% |
Drive Water Flow @ 200 psi |
|---|---|---|---|---|---|---|
| 2.0EDCT-75 | 2” | Grooved | 75 gpm | 2500 | 1250 | 85 gpm |
| 3.0EDCT-150 | 3” | Grooved | 150 gpm | 5000 | 2500 | 150 gpm |
