A fog nozzle is a firefighting hose spray nozzle that breaks its stream into small droplets. By doing so, its stream achieves a greater surface area, and thus a greater rate of heat absorption, which, when compared to that of a smoothbore nozzle, speeds its transformation into the steam that smothers the fire by displacing its oxygen. Specially designed fog nozzles (with no stream adjustment) have been certified by Underwriters Laboratories (UL) for use on Class B & C hazards.
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Famous quotes containing the word fog:
“Bonnie Lee: Mr. Carter, Mr. Carter, do you really think, I mean, do you really think it was my fault, what happened out there?
Geoff Carter: Sure it was your fault. You were gonna have dinner with him, the Dutchman hired him, I sent him up on schedule, the fog came in, a tree got in the way. All your fault. Forget it unless you want the honor.”
—Jules Furthman (1888–1960)