PRODUCT ID : S/002/004 Fire Fighting Appliances

Portable foam applicators are educting nozzles of the type that are sometimes used as part of an approved deck foam system on tank vessels (which may be known to inspectors as “mechanical foam nozzle with pick-up tube” or “mechanical foam pick-up nozzle”) in combination with a portable supply of foam liquid concentrate. To be used, the applicator (nozzle) is screwed onto a fire hose and a pick-up is inserted into a container filled with foam liquid concentrate. When water is supplied to the fire hose, a vacuum siphon effect created by the water passing through the nozzle draws (educts) the foam concentrate into the nozzle where it is mixed with the water and expanded with air to be discharged as foam. Sometimes an inline eductor in the hose line separate from the nozzle is used to siphon the concentrate from the container.

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