ch7 fire hose nozzles and flow rates Flashcards
a stream of water or other extinguishing agent after it leaves a nozzle until it reaches the desired point
fire stream
What is the equation to determine the flow from a solid stream nozzle
GPM=29.7 X d^2 X square root of NP
blank nozzles are designed to flow a specific amount of water at specific nozzle discharge pressure on all stream patterns
constant flow
This nozzle has a number of constant flow settings
manually adjustable nozzles
with a blank, the stream direction and angle can be changed while water is being discharged
monitor
A blank is mounted on a fire apparatus deck and is connected directly to the pump by permanent piping
turret pipe
The blank consists of a short length of large diameter hose with a large nozzle or large playpipe supported at the discharge end by a tripod
deluge set
A blank is a master stream device used in conjunction with aerial ladders
ladder pipe
blank clearly illustrates Newton’s third law of motion, for every action there is an equal and opposite reaction
nozzle reaction
nozzle reaction for solid stream nozzles
NR=1.57 X d^2 X NP
nozzle reaction for fog stream nozzles
NR= .0505 X Q X square root of the NP