NAF – Nozzle Aspirated Foam – a very versatile, low energy Foam, simple and inexpensive to make and use. Can be used for Fire Extinguishment and Fire Protection. Very effective for fire control and overhaul.
“NAF Subjects”
Fighting Fire w Solution
Fighting Fire w NAFs
How to Build an Aspirated Nozzle
As simple as Aspirating Nozzle are, they have two major components – the Venturi and the Agitator. A venturi is a short restriction in the Solution flow. As the Solution passes the restriction, it again expands causing a natural vacuum. The vacuum pulls in atmospheric air via air holes. The air mixes with the Solution …
If you are learning NAF and are comfortable with the proportining system and how NAF nozzles work, operating aan aspirating foam nozzle will do no harm – so a good way to learnall about NAF is to get out and “Play With It & See” what it does and does not do. Water (W) + …
Since making FOAM is not rocket science, neither is making FOAM nozzles.A few tips to remember: It is helpful to have a shut off at the nozzle The larger the diameter, the higher the expansion Insure that there is a venturi to pull in the air Insure that you have some means of agitation. …
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