HOSE & APPLIANCES
HOSE/FIRE STREAMS
FRICTION LOSS
SPECIAL PURPOSE NOZZLES
VALVES GALORE!!
100
Referred to as sexless couplings and are connected with one third of a turn.
What is storz couplings?
100
When hose is laid from the water source to the fire.
What is a forward lay?
100
Rate of motion of particle in a given direction; speed
What is Velocity?
100
Used with a sledgehammer to to drive the point through the obstruction
What is a piecing nozzle
100
What valve allows connection of single intake hose to siamese before addition of more hoses
What is a clapper
200
A feature on screw thread couplings where the beginning of the thread is cut to provide a positive connection.
What is the higbee cut?
200
Occurs when the flow of water in a hose line is stopped suddenly resulting in a water surge.
What is water hammer?
200
Turbulence caused when a stream is subjected to excessive velocity
Critical velocity
200
Is dropped into a chimney with booster line.
What is a chimney nozzle?
200
One female and two or more male outlets
What is a Wye appliance?
300
Used to stop the flow of water to allow replacement of a burst section of hose or add more sections.
What is hose clamp?
300
The type of stream resulting from the use of a smoothbore nozzle.
What is solid stream?
300
Causes of friction loss
Rough hose lining Partially closed valves/nozzles Wrong size gasket Excessive hose length Excess flow for hose size Damaged couplings Sharp bends/kinks in hose Adapters
300
A tool/device used for basement fires
What is a distributor (cellar) nozzle
300
Two or more female inlets and one male outlet
What is a Siamese appliance?
400
The type of load that is the easiest to load for large diameter hose and most prevalent on our trucks.
What is flat load?
400
The most common type of foam proportioner that can be connected at any point in the hose lay.
What is an in-line foam eductor?
400
Can be prevented by operating nozzle controls, hydrants, valves, and hose clamps slowly
What is water hammer
400
May adjust high-volume (master stream) flow rates from 300 gpm to 2,500 gpm
What is MANUAL FOG ?STREAM NOZZLES
400
What is the name of a wye appliance attached to hydrant
What is a water thief?
500
The coupling that has lugs on the shank.
What is the male coupling?
500
Used to achieve maximum water surface for heat absorption and is composed of very fine water droplets.
What is a fog stream?
500
Elevation will cause what?
What is pressure loss.
500
What is considered a narrow fog stream
What is 15-45 degrees?
500
Controls nozzle flow and pump discharge rates
What is a ball valve.
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