IFSTA 6 Hose Nozzles & Rate Flow Flashcards
What is defined as a stream of water or other extinguishing agent after it leaves a nozzle until it reaches the desired point
3rd Ed
page 193
fire stream
what are the three basic types of fire stream
3rd ed
page 193
solid
fog
broken
define solid stream
3rd
page 194
hose stream that stays together in a Solid/compact mass produced by smoothbore nozzle
what is the formula to determine discharge rate of a smoothbore nozzle
3rd
page 195
29.7 X d^2 X sq root NP
what three methods may be used to produce a fog stream
3rd ed
page 196
Deflection at thePeriphery
impinging Jets
combination
define periphery deflected streams
3rd ed page 196
water deflected around an inside circular stem of nozzle
position of stem determines shape of stream
define impinge jet stream
3rd ed page 196
several jets of water collide at an angle to create fine, evenly divided particles
define fog stream
3rd ed
page 196
Water stream of finally divided particles used for fire control
The reach of a fog stream is directly related to what
3rd ed
page 197
width of stream
size of the water particles
wind
volume of water flowing
define constant flow fog nozzle
3rd ed
page 197
nozzle designed to flow a specific volume of water on all stream patterns at a specific nozzle discharge pressure
our akron assault
Define select gallonage nozzle
3rd ed
page 197
Nozzle allows fire fighter operating Handline to select flow rate at rated discharge pressure
define automatic fog nozzle
3rd ed
page 198
aka variable flow nozzles
nozzle with an ability to change patterns while maintaining same nozzle pressure
if gpm changes, it will auto adjust to maintain same pressure & pattern
Which nozzle maintains approximately the same nozzle pressure and pattern even if the gallonage supplied to the nozzle changes
3rd ed
page 198
automatic fog nozzle
Which type of fog nozzle are basically variable flow nozzles with pattern change capability and the ability to maintain the same nozzle pressure
3rd ed
page 198
Automatic fog nozzle
which type of fog nozzle supplies the selected flow at the rated nozzle discharge pressure
3rd ed
page 197
Constant flow nozzles
which type of nozzle discharge the same volume of water regardless of the pattern setting
3rd ed
page 197
constant flow fog nozzle
which type of fog nozzle serves as a pressure regulator for the pump or as lines are added or shut down ensuring that all available water may be used continuously
3rd ed
page -98
Automatic fog nozzles
what are the three types of Handline nozzles
3rd ed
page 199
solid
fog
broken stream
define master stream nozzle
3rd ed
page 199
nozzles capable of flowing in excess of 350 GPM must be properly secured for safe operation
what two types of streams may master streams produce
3rd ed
page 199
solid
fog
define fixed monitor
3rd ed
page 200
A.k.a. deck gun
master stream permanently mounted on Apparatus
define combination monitor
3rd ed
page 200
Maybe used in a mount on the Apparatus or moved in used remotely from the vehicle
define portable monitor
3rd ed
page 200
Stored on Apparatus for deployment to a specific location to be used
define cellar nozzle
3rd ed
page 200
A.k.a. distributor
nozzle most often lowered through holes or other openings
deployed for attics & void spaces
define piercing nozzle
3rd ed
201
nozzle with an angled case hardened steel tip that can be driven through wall roof or ceiling to extinguish hidden fires
Flows approximately 125 GPM at 100 psi
define chimney nozzle
3rd ed
page 201
Device of brass or steal the small impinging holes
flows approximately 1.5 to 3 GPM
at 100 psi
attached booster hose
what is the equation for determining nozzle reaction for solid stream nozzles
3rd ed
page 203
1.57 X d^2 X NP
what is the formula for determine nozzle reaction of a fog stream nozzle
3rd ed
page 204
.0505 X Q X sq root NP
