SELF-EDUCING FOAM NOZZLE

摘要

A firefighting nozzle (10) has a low-turbulence liquid flow channel (20) that is directed outwardly by a baffle (30). Surrounding the flow channel (20) is an annular concentrate chamber (62). The concentrate chamber (62) leads from a concentrate inlet (14) to a concentrate entry port (50) on a rearward wall (52) opposed to the baffle (30). Liquid flowing past the baffle (30) draws concentrate through the concentrate entry port (50) into the flow. The concentrate and liquid subsequently mix to produce firefighting foam.