When applying foam, it is desirable to utilize a high-quality foam stream. At least __% of the stream flow should land on the flammable liquid within a well-defined,
compact, elliptical area or footprint.
An efficient foam-making device will throw foam
____ ___ ___ as water.
Nearly as far
The ___-_____Hydro-Foam design entrains less air into the foam solution. This produces a high quality foam that expands to the optimum Class "B" foam range, from __ to __.
Non-aspiring, 3:1 to 6:1
The hydrofoam nozzle is based on an efficient,
____-___, ____-____, ___-_____ design.
Water-hydraulic, self-educting, non-aspirating
Hydrofoam nozzle has several distinct
1. is a water-hydraulic delivery device that is simple and reliable because it does not have any moving parts.
2. efficient self-proportioning design allows the full energy of the available water-
power to be used to produce a foam stream with greater range.
3. operate effectively at low nozzle pressures (75psi or less)
4. Large quantities of foam concentrate can be located remote from the nozzle and
transported to the nozzle using small diameter hose lines (11/2") utilizing a special
venturi-type device (Jet Ratio Controller).
Stream Range (straight stream)
Water Inlet Size
21/2" NST (National Standard Thread)
The Hydro-Foam nozzle is fully adjustable from ___ ____ to ____ ____.
Straight stream to full fog
The foam concentrate inlet on the Hydro-Foam nozzle includes an _' reinforced clear
plastic "pigtail" with 11/2" NST swivel inlet for connection to the _____ and a 11/2"
NPT swivel for connection to the _____.
8', Fire hose, nozzle
11/2 __ psi per 100'
ladderpipe assembly __psi
Expect to use __ gallons of
concentrate per minute of operation while water is flowing. (Hydrofoam nozzle)
The 11/2" In-line Foam Eductor is a ______ delivery device that is simple and reliable because it has few moving parts.
Positive metering allows foam mixtures ranging from __% to _%. (Inline educator)
.5% to 6%
Pump ___PSI to the inline eductor
Use __% for normal Class “B" flammable liquids. Use __% for polar solvents. Push the knurled "mixture" knob in and rotate. Line the knob setting (i.e. 3%) to the white line on the body of the pick-up tube housing. (Inline educator)
As air is entrained in the solution nozzle pressure and nozzle reaction will ___. (Inline educator)
Direct water stream ___ ___ ____until foam reaches the nozzle. (Inline educator)
Away from the fire
You can stop the flow of foam (inline educator) by removing the pick-up tube from the container of concentrate or rotating the mixture selector knob to the _ position.
Throttle back pump pressure __% before changing from "foam" to "water" (in-line educator).