Fire Hose Nozzle And Rates Flashcards
Thee types of if fire streams
Solid , fog , broken
Deflection def. and nozzle action
To turn or state of turning
Water is deflected by an external barrel
Impingement
To strike or dash against an object, to come together with force
Drive several jets of water into each other to break up the pattern
Most common variable flow nozzle used today
Automatic nozzle
Variable pattern maintain while
Maintaining the same pressure
High pressure fog nozzle psi, gpm, use
800
8-15 gpm
Wildland
Safe gpm for a hand line
350 gpm
Three types of monitors
Fixed- permanently mounted to app
Combination - used on app or removed
Portable- can be carried where needed
Chemey nozzle gpm
1.5 - 3
Fine mist discharge converting to steam.
Fire stream def.
A stream of water or extinguishing agent after it leaves the nozzle until it reaches its desired point
Gate valve
Screw handle valve
Usually in large diameter valves
Quarter turn valve
Opened and closed by 90 degree Movement of handle
Twist to lock.
Butterfly valve
Quarter turn handle.
Used with dump control on tenders
