Chapter 17 - Fire Attack & Foam

One fire fighter on each ladder section

How should fire fighters space themselves when advancing an uncharged line up a ladder?
A. 15 ft (5 m) apart
B. Only the fire fighter with the nozzle should be on the ladder
C. One fire fighter on each ladder section
D. 10 ft (3 m) apart

Aerating

Which type of nozzle is used most commonly with fluoroprotein foam?
Select one:
A. Aerating
B. Solid bore
C. Fog Incorrect
D. Water aspirating

Flooding of large enclosed area

What is high-expansion foam particularly used for?
Select one:
A. Flooding of large enclosed areas
B. Exposure protection
C. Unignited fuel spills
D. Transportation accidents

The hose must be tied securely to the ladder

Which statement about operating a nozzle from a ground ladder is correct?
Select one:
A. This is a risky operation that should be avoided whenever possible.
B. The hose must be tied securely to the ladder.
C. The ladder should be tied off to the building.

Aqueous film-forming

Which type of foam is particularly well suited for gasoline spills?
Select one:
A. Protein
B. Fluoroprotein
C. Alcohol-resistant
D. Aqueous film-forming

Forestry

Which type of hose ranges in size from 1" to 1�" (25 to 38 mm) in diameter?
Select one:
A. Forestry
B. Handline
C. Booster
D. Medium

Fluoroprotein

Which type of foam contains a surface-active agent that produces a fast-spreading film?
Select one:
A. Class A
B. Fluoroprotein
C. High expansion
D. Aqueous film-forming

Place the nozzle and the top fold over the shoulder and walk away from the apparatus

What is the correct procedure for deploying a triple-layer load preconnect?
Select one:
A. Once the load has cleared the bed, drag the three layers to the point of attack
B. Clear the hose from the bed by pulling the loop on the lowest tier
C. Shoulder th

120 to 180 gpm (454 to 681 lpm)

Generally speaking, a 1�" (45-mm) attack hose can flow __________.

Automatic-adjusting

Which type of fog-stream nozzle provides a flow between 90 and 225 gpm (340 and 852 lpm)?
Select one:
A. Fixed-gallonage
B. Variable pattern
C. Automatic-adjusting
D. Adjustable-gallonage

Separates the fuel from the fire

How does foam extinguish flammable liquid fires?
Select one:
A. Dilutes the fuel
B. Cools the fire
C. Separates the fuel from the fire
D. Inhibits the chemical chain reaction

Minuteman

Which type of load is most commonly used for preconnected attack lines?
Select one:
A. Minuteman
B. Skid
C. Accordion
D. Horseshoe

Minuteman

Which attack line load is particularly useful when the line must be advanced up a stairway?
Select one:
A. Wyed lines
B. Skid
C. Triple layer
D. Minuteman

Minuteman

For which preconnected hose load does the fire fighter shoulder part of the load, with hose paying off the top of that load as the fire fighter advances?
Select one:
A. Forestry
B. Skid
C. Minuteman
D. Triple layer

Absorb less heat

Compared to fog nozzle streams, smooth-bore nozzle streams __________.
Select one:
A. absorb less heat
B. cause more disruption of thermal layering
C. have a lower discharge volume
D. are more effective for hydraulic ventilation

enabling water to penetrate the fuel more deeply

The low surface tension of Class A foam affects its extinguishing properties by __________.
Select one:
A. diluting the fuel
B. raising the vaporization temperature of water
C. enabling water to penetrate the fuel more deeply
D. suppressing vapor producti

C. a water supply for interior attack lines

The function of a standpipe system is to provide __________.
Select one:
A. a connection from an engine to a static water source
B. an auxiliary water supply for the fire department
C. a water supply for interior attack lines
D. a connection for pumper su

15 Gal

To batch mix 3 percent foam into a 500-gallon (1893-liter) water tank, how much foam concentrate should be added to the tank?
Select one:
A. 15 gal (57 L)
B. 9 gal (34 L)
C. 3 gal (11.35 L)
D. 5 gal (19 L)

B. Reduces the surface tension of water

What is a benefit of Class A foam?
Select one:
A. Forms a vapor barrier on fuel spills
B. Reduces the surface tension of water
C. Is compatible with many other foam types
D. Does not conduct electricity

B. Advancing the line to the point of attack

What is the second stage of advancing an attack line?
Select one:
A. Purging the line of air
B. Advancing the line to the point of attack
C. Flaking out the line at the building entrance
D. Pulling the line from the bed

A. A straight stream is discharged from an adjustable fog nozzle.

Which statement about straight streams is correct?
Select one:
A. A straight stream is discharged from an adjustable fog nozzle.
B. A straight stream is the same as a solid stream.
C. A straight stream resists breakup better than a solid stream.
D. A stra

Master Stream

Which nozzle type has the highest flow rate?
Select one:
A. Master stream
B. Smooth bore
C. Adjustable
D. Handline

200 Psi

What is the correct operating pressure for an in-line foam educator?
Select one:
A. 250 psi (1724 kPa)
B. 150 psi (1034 kPa)
C. 100 psi (689 kPa)
D. 200 psi (1379 kPa)

A. Greater heat absorption per gallon discharged

What is an advantage of a fog-stream nozzle?
Select one:
A. Greater heat absorption per gallon discharged
B. Longer stream reach
C. Less disruption of thermal layering
D. Lower operating pressure

C. Sweep (roll-on)

Which foam application method is best for a pool of flammable liquid on open ground?
Select one:
A. Rain-down
B. Subsurface injection
C. Sweep (roll-on)
D. Bankshot (bank-down)

Breakaway Nozzle

What type of nozzle can be used to extend an attack line in order to reach the fire by adding more lengths of hose?
Piercing nozzle
Fog-stream nozzle
Breakaway nozzle
Smooth bore nozzle

ALL

Which of the following steps is part of replacing a defective piece of hose?
Shut down or clamp off the hose.
Remove the damaged section of the hose line.
Replace the damaged section with two new sections.
All of these answers are correct

Protein

Which type of Class B foam is made from only animal by-products?
Protein foam
Fluoroprotein foam
Film-forming fluoroprotein foam
Aqueous film-forming foam

Fluoroprotein Foam

Which type of foam is made from animal by-products with a surfactant additive that produces a fast-spreading film?
Protein foam
Fluoroprotein foam
Film-forming fluoroprotein foam
Aqueous film-forming foam

2�? (64 mm) attack hose

Which attack line is used to attack large fires and to deliver large quantities of water?
1�? to 1�? (38 to 44 mm) attack hose
2�? (64 mm) attack hose
Booster hose
Forestry line

Booster

Which attack line is carried on a hose reel, is lightweight, and can be pulled by one person?
1�? to 1�? (38 to 44 mm) attack hose
2�? (64 mm) attack hose
Booster hose
Forestry line

Cellar Nozzle

Which type of nozzle is designed to fight fires in basements or other inaccessible locations such as attics or cocklofts?
Fog-stream nozzle
Smooth-bore nozzle
Water curtain nozzle
Cellar nozzle

Foam Proportioner

Which piece of foam equipment mixes the foam concentrate into the fire stream in the proper percentage?
Premixed foam
Foam nozzle
Batch mixer
Foam proportioner

Piercing nozzle

Which type of nozzle is equipped on airport firefighting vehicles to gain quick access to the inside of an aircraft and extinguish the fire?
Fog-stream nozzle
Smooth-bore nozzle
Piercing nozzle
Cellar nozzle

Adjustable-gallonage nozzle

Which type of fog-stream nozzle allows the operator to select a desired flow from several settings by rotating a selector bezel to adjust the size of the opening?
Fixed-gallonage fog nozzle
Adjustable-gallonage nozzle
Automatic-adjusting fog nozzle
Distri

Fog-Stream Nozzle

Which type of nozzle produces fine droplets of water that absorb heat much more quickly and efficiently?
Fog-stream nozzle
Smooth-bore nozzle
Piercing nozzle
Cellar nozzle

Master Stream Nozzle

Which nozzle classification is used on deck guns, portable monitors, and ladder pipes?
Low-volume nozzle
Handline nozzle
Master stream nozzle
All of these answers are correct

1�? to 1�? (38 to 44 mm) attack hose

Which attack line is the primary attack line and is used most often during base fire training?
1�? to 1�? (38 to 44 mm) attack hose
2�? (64 mm) attack hose
Booster hose
Forestry line

Bankshot method

Which foam application technique involves the fire fighter deflecting the foam stream off an object or wall and allowing it to flow down into the fire?
Sweep method
Bankshot method
Rain-down method
Injection method

Ordinary Combustible

What type of fire are Class A foams typically used to fight by reducing the surface tension of water?
Flammable
Alcohol-solvent
Ordinary combustible
Electrical

Forestry

Which attack line is designed for use with wild land and ground fires and is typically 1 inch in diameter?
1�? to 1�? (38 to 44 mm) attack hose
2�? (64 mm) attack hose
Booster hose
Forestry line

Aqueous Film-Forming Foam

Which type of foam is a synthetic-based foam particularly suitable for fires involving gasoline and light hydrocarbon fuels?
Alcohol-resistant foam
Fluoroprotein foam
Film-forming fluoroprotein foam
Aqueous film-forming foam

Foam Injector

Which piece of foam equipment adds the foam to the water stream under pressure?
Foam eductor
Foam nozzle
Foam injector
Foam tank

Smooth-Bore Nozzles

Which type of nozzle has a tip that gradually decreases the diameter of the stream to a size smaller than the hose's diameter?
Fog-stream nozzle
Smooth-bore nozzle
Piercing nozzle
Cellar nozzle

Alcohol-resistant foam

Which type of foam has properties similar to aqueous film-forming foam, but is formulated so that polar solvents do not dissolve the foam?
Alcohol-resistant foam
Fluoroprotein foam
Film-forming fluoroprotein foam
Protein foam

Sweep

Which foam application technique, used on a pool of fuel on the ground, involves the fire fighter using the nozzle to push the foam onto the pool of fuel?
Sweep method
Bankshot method
Rain-down method
Injection method

Water Curtain Nozzle

Which type of nozzle delivers a flat screen of water, forming a protective sheet of water on an exposure to keep it cool?
Fog-stream nozzle
Water curtain nozzle
Piercing nozzle
Cellar nozzle

Rain-Down Method

Which foam application technique involves the fire fighter lofting the foam stream into the air above the fire and letting it fall down gently onto the surface?
Sweep method
Bankshot method
Rain-down method
Injection method

300 psi

Attack hose tested annually at: ____ psi

200 psi

Supply hose tested annually at: ____ psi

Shoulder

Carry used to transport full length attack line up a stairway.
Shoulder
Firemans
Hose
Advancing

Fog-Stream Nozzles

Nozzle seperates the water into droplets

120-180

A 1- 3/4 " handline hose is generally considered to flow.... GPM

Rubber-Covered

Attack lines are either double jacket or .... construction.

Low-Volume
40
Handline
60-350
Master-Stream
350+

3 Groups of Nozzles

40-50

Booster hose is generally considered to flow... gpm

2.
Engine to door. Door to fire.

How many stages to advancing an attack line"
What are they?

inaccessible

Bresnan nozzles fight fires in ... places

Adjustable-Gallonage Fog

Nozzle allows the operator to select desired flow from several settings.

Piercing

Nozzle used to make a hole in automobile sheet metal?

Master Stream

Nozzle used on deck guns, portable monitors, and ladder pipes.

250

A 2-1/2" handline hose is generally considered to flow ... GPM

Rear

End of the hose bed closest to the tailboard is called the ...

Bankshot

Foam application method uses an object to deflect the foam stream down onto the fire.

Class A foam

Type of foam used to fight fires involving ordinary combustible materials

Foam Proportioner

Which device mixes the foam concentrate into the fire stream

Sweep
Bankshot
Raindown

3 Techniques for applying foam

Foam injectors

Device that adds foam concentrate to the water stream under pressure

Disturbed

Once a foam blanket has been applied, it cannot be ....

Adjustable-Gallonage Fog Nozzle

Adjustable-Gallonage Fog Nozzle Allows the operator to select a desired flow from several settings by rotating a selector bezel to adjust the size of the opening.

cellar Nozzle

Fight fires in inaccessible places. Attics/basements.

booster hose

Carried on a hose reel.
Holds 150-200 of rubber hose.
Flow from 1 inch = 40-50 Gallons

water curtain nozzle

Deliver a flat screen of water that then forms a protective sheet (curtain) of water on the surface of an exposed building.

fixed gallonage fog nozzle

Delivers preset flow at rated discharge.

breakaway type nozzle

Nozzle can be separated between the shut off and the tip.

wye

Used for a fire that is some distance.
Advance a large diameter and then have it split into 2 attack lines.

smooth bore nozzle

Gradually decreases the diameter of the stream to a size smaller than the hose diameter.
Deeper penetration.
Less disturbance of thermal layers.

fog stream nozzle

Produces fine droplets of water.

nozzle

Attached to the discharge end of attack lines to give fire streams shape and direction.

Piercing nozzle

Pierce holes to extinguish fires behind the surfaces.
EX) Aircraft or building walls

protein foam

Made from animal by products.
Applied in 3-6%

One fire fighter on each ladder section

How should fire fighters space themselves when advancing an uncharged line up a ladder?
A. 15 ft (5 m) apart
B. Only the fire fighter with the nozzle should be on the ladder
C. One fire fighter on each ladder section
D. 10 ft (3 m) apart

Aerating

Which type of nozzle is used most commonly with fluoroprotein foam?
Select one:
A. Aerating
B. Solid bore
C. Fog Incorrect
D. Water aspirating

Flooding of large enclosed area

What is high-expansion foam particularly used for?
Select one:
A. Flooding of large enclosed areas
B. Exposure protection
C. Unignited fuel spills
D. Transportation accidents

The hose must be tied securely to the ladder

Which statement about operating a nozzle from a ground ladder is correct?
Select one:
A. This is a risky operation that should be avoided whenever possible.
B. The hose must be tied securely to the ladder.
C. The ladder should be tied off to the building.

Aqueous film-forming

Which type of foam is particularly well suited for gasoline spills?
Select one:
A. Protein
B. Fluoroprotein
C. Alcohol-resistant
D. Aqueous film-forming

Forestry

Which type of hose ranges in size from 1" to 1�" (25 to 38 mm) in diameter?
Select one:
A. Forestry
B. Handline
C. Booster
D. Medium

Fluoroprotein

Which type of foam contains a surface-active agent that produces a fast-spreading film?
Select one:
A. Class A
B. Fluoroprotein
C. High expansion
D. Aqueous film-forming

Place the nozzle and the top fold over the shoulder and walk away from the apparatus

What is the correct procedure for deploying a triple-layer load preconnect?
Select one:
A. Once the load has cleared the bed, drag the three layers to the point of attack
B. Clear the hose from the bed by pulling the loop on the lowest tier
C. Shoulder th

120 to 180 gpm (454 to 681 lpm)

Generally speaking, a 1�" (45-mm) attack hose can flow __________.

Automatic-adjusting

Which type of fog-stream nozzle provides a flow between 90 and 225 gpm (340 and 852 lpm)?
Select one:
A. Fixed-gallonage
B. Variable pattern
C. Automatic-adjusting
D. Adjustable-gallonage

Separates the fuel from the fire

How does foam extinguish flammable liquid fires?
Select one:
A. Dilutes the fuel
B. Cools the fire
C. Separates the fuel from the fire
D. Inhibits the chemical chain reaction

Minuteman

Which type of load is most commonly used for preconnected attack lines?
Select one:
A. Minuteman
B. Skid
C. Accordion
D. Horseshoe

Minuteman

Which attack line load is particularly useful when the line must be advanced up a stairway?
Select one:
A. Wyed lines
B. Skid
C. Triple layer
D. Minuteman

Minuteman

For which preconnected hose load does the fire fighter shoulder part of the load, with hose paying off the top of that load as the fire fighter advances?
Select one:
A. Forestry
B. Skid
C. Minuteman
D. Triple layer

Absorb less heat

Compared to fog nozzle streams, smooth-bore nozzle streams __________.
Select one:
A. absorb less heat
B. cause more disruption of thermal layering
C. have a lower discharge volume
D. are more effective for hydraulic ventilation

enabling water to penetrate the fuel more deeply

The low surface tension of Class A foam affects its extinguishing properties by __________.
Select one:
A. diluting the fuel
B. raising the vaporization temperature of water
C. enabling water to penetrate the fuel more deeply
D. suppressing vapor producti

C. a water supply for interior attack lines

The function of a standpipe system is to provide __________.
Select one:
A. a connection from an engine to a static water source
B. an auxiliary water supply for the fire department
C. a water supply for interior attack lines
D. a connection for pumper su

15 Gal

To batch mix 3 percent foam into a 500-gallon (1893-liter) water tank, how much foam concentrate should be added to the tank?
Select one:
A. 15 gal (57 L)
B. 9 gal (34 L)
C. 3 gal (11.35 L)
D. 5 gal (19 L)

B. Reduces the surface tension of water

What is a benefit of Class A foam?
Select one:
A. Forms a vapor barrier on fuel spills
B. Reduces the surface tension of water
C. Is compatible with many other foam types
D. Does not conduct electricity

B. Advancing the line to the point of attack

What is the second stage of advancing an attack line?
Select one:
A. Purging the line of air
B. Advancing the line to the point of attack
C. Flaking out the line at the building entrance
D. Pulling the line from the bed

A. A straight stream is discharged from an adjustable fog nozzle.

Which statement about straight streams is correct?
Select one:
A. A straight stream is discharged from an adjustable fog nozzle.
B. A straight stream is the same as a solid stream.
C. A straight stream resists breakup better than a solid stream.
D. A stra

Master Stream

Which nozzle type has the highest flow rate?
Select one:
A. Master stream
B. Smooth bore
C. Adjustable
D. Handline

200 Psi

What is the correct operating pressure for an in-line foam educator?
Select one:
A. 250 psi (1724 kPa)
B. 150 psi (1034 kPa)
C. 100 psi (689 kPa)
D. 200 psi (1379 kPa)

A. Greater heat absorption per gallon discharged

What is an advantage of a fog-stream nozzle?
Select one:
A. Greater heat absorption per gallon discharged
B. Longer stream reach
C. Less disruption of thermal layering
D. Lower operating pressure

C. Sweep (roll-on)

Which foam application method is best for a pool of flammable liquid on open ground?
Select one:
A. Rain-down
B. Subsurface injection
C. Sweep (roll-on)
D. Bankshot (bank-down)

Breakaway Nozzle

What type of nozzle can be used to extend an attack line in order to reach the fire by adding more lengths of hose?
Piercing nozzle
Fog-stream nozzle
Breakaway nozzle
Smooth bore nozzle

ALL

Which of the following steps is part of replacing a defective piece of hose?
Shut down or clamp off the hose.
Remove the damaged section of the hose line.
Replace the damaged section with two new sections.
All of these answers are correct

Protein

Which type of Class B foam is made from only animal by-products?
Protein foam
Fluoroprotein foam
Film-forming fluoroprotein foam
Aqueous film-forming foam

Fluoroprotein Foam

Which type of foam is made from animal by-products with a surfactant additive that produces a fast-spreading film?
Protein foam
Fluoroprotein foam
Film-forming fluoroprotein foam
Aqueous film-forming foam

2�? (64 mm) attack hose

Which attack line is used to attack large fires and to deliver large quantities of water?
1�? to 1�? (38 to 44 mm) attack hose
2�? (64 mm) attack hose
Booster hose
Forestry line

Booster

Which attack line is carried on a hose reel, is lightweight, and can be pulled by one person?
1�? to 1�? (38 to 44 mm) attack hose
2�? (64 mm) attack hose
Booster hose
Forestry line

Cellar Nozzle

Which type of nozzle is designed to fight fires in basements or other inaccessible locations such as attics or cocklofts?
Fog-stream nozzle
Smooth-bore nozzle
Water curtain nozzle
Cellar nozzle

Foam Proportioner

Which piece of foam equipment mixes the foam concentrate into the fire stream in the proper percentage?
Premixed foam
Foam nozzle
Batch mixer
Foam proportioner

Piercing nozzle

Which type of nozzle is equipped on airport firefighting vehicles to gain quick access to the inside of an aircraft and extinguish the fire?
Fog-stream nozzle
Smooth-bore nozzle
Piercing nozzle
Cellar nozzle

Adjustable-gallonage nozzle

Which type of fog-stream nozzle allows the operator to select a desired flow from several settings by rotating a selector bezel to adjust the size of the opening?
Fixed-gallonage fog nozzle
Adjustable-gallonage nozzle
Automatic-adjusting fog nozzle
Distri

Fog-Stream Nozzle

Which type of nozzle produces fine droplets of water that absorb heat much more quickly and efficiently?
Fog-stream nozzle
Smooth-bore nozzle
Piercing nozzle
Cellar nozzle

Master Stream Nozzle

Which nozzle classification is used on deck guns, portable monitors, and ladder pipes?
Low-volume nozzle
Handline nozzle
Master stream nozzle
All of these answers are correct

1�? to 1�? (38 to 44 mm) attack hose

Which attack line is the primary attack line and is used most often during base fire training?
1�? to 1�? (38 to 44 mm) attack hose
2�? (64 mm) attack hose
Booster hose
Forestry line

Bankshot method

Which foam application technique involves the fire fighter deflecting the foam stream off an object or wall and allowing it to flow down into the fire?
Sweep method
Bankshot method
Rain-down method
Injection method

Ordinary Combustible

What type of fire are Class A foams typically used to fight by reducing the surface tension of water?
Flammable
Alcohol-solvent
Ordinary combustible
Electrical

Forestry

Which attack line is designed for use with wild land and ground fires and is typically 1 inch in diameter?
1�? to 1�? (38 to 44 mm) attack hose
2�? (64 mm) attack hose
Booster hose
Forestry line

Aqueous Film-Forming Foam

Which type of foam is a synthetic-based foam particularly suitable for fires involving gasoline and light hydrocarbon fuels?
Alcohol-resistant foam
Fluoroprotein foam
Film-forming fluoroprotein foam
Aqueous film-forming foam

Foam Injector

Which piece of foam equipment adds the foam to the water stream under pressure?
Foam eductor
Foam nozzle
Foam injector
Foam tank

Smooth-Bore Nozzles

Which type of nozzle has a tip that gradually decreases the diameter of the stream to a size smaller than the hose's diameter?
Fog-stream nozzle
Smooth-bore nozzle
Piercing nozzle
Cellar nozzle

Alcohol-resistant foam

Which type of foam has properties similar to aqueous film-forming foam, but is formulated so that polar solvents do not dissolve the foam?
Alcohol-resistant foam
Fluoroprotein foam
Film-forming fluoroprotein foam
Protein foam

Sweep

Which foam application technique, used on a pool of fuel on the ground, involves the fire fighter using the nozzle to push the foam onto the pool of fuel?
Sweep method
Bankshot method
Rain-down method
Injection method

Water Curtain Nozzle

Which type of nozzle delivers a flat screen of water, forming a protective sheet of water on an exposure to keep it cool?
Fog-stream nozzle
Water curtain nozzle
Piercing nozzle
Cellar nozzle

Rain-Down Method

Which foam application technique involves the fire fighter lofting the foam stream into the air above the fire and letting it fall down gently onto the surface?
Sweep method
Bankshot method
Rain-down method
Injection method

300 psi

Attack hose tested annually at: ____ psi

200 psi

Supply hose tested annually at: ____ psi

Shoulder

Carry used to transport full length attack line up a stairway.
Shoulder
Firemans
Hose
Advancing

Fog-Stream Nozzles

Nozzle seperates the water into droplets

120-180

A 1- 3/4 " handline hose is generally considered to flow.... GPM

Rubber-Covered

Attack lines are either double jacket or .... construction.

Low-Volume
40
Handline
60-350
Master-Stream
350+

3 Groups of Nozzles

40-50

Booster hose is generally considered to flow... gpm

2.
Engine to door. Door to fire.

How many stages to advancing an attack line"
What are they?

inaccessible

Bresnan nozzles fight fires in ... places

Adjustable-Gallonage Fog

Nozzle allows the operator to select desired flow from several settings.

Piercing

Nozzle used to make a hole in automobile sheet metal?

Master Stream

Nozzle used on deck guns, portable monitors, and ladder pipes.

250

A 2-1/2" handline hose is generally considered to flow ... GPM

Rear

End of the hose bed closest to the tailboard is called the ...

Bankshot

Foam application method uses an object to deflect the foam stream down onto the fire.

Class A foam

Type of foam used to fight fires involving ordinary combustible materials

Foam Proportioner

Which device mixes the foam concentrate into the fire stream

Sweep
Bankshot
Raindown

3 Techniques for applying foam

Foam injectors

Device that adds foam concentrate to the water stream under pressure

Disturbed

Once a foam blanket has been applied, it cannot be ....

Adjustable-Gallonage Fog Nozzle

Adjustable-Gallonage Fog Nozzle Allows the operator to select a desired flow from several settings by rotating a selector bezel to adjust the size of the opening.

cellar Nozzle

Fight fires in inaccessible places. Attics/basements.

booster hose

Carried on a hose reel.
Holds 150-200 of rubber hose.
Flow from 1 inch = 40-50 Gallons

water curtain nozzle

Deliver a flat screen of water that then forms a protective sheet (curtain) of water on the surface of an exposed building.

fixed gallonage fog nozzle

Delivers preset flow at rated discharge.

breakaway type nozzle

Nozzle can be separated between the shut off and the tip.

wye

Used for a fire that is some distance.
Advance a large diameter and then have it split into 2 attack lines.

smooth bore nozzle

Gradually decreases the diameter of the stream to a size smaller than the hose diameter.
Deeper penetration.
Less disturbance of thermal layers.

fog stream nozzle

Produces fine droplets of water.

nozzle

Attached to the discharge end of attack lines to give fire streams shape and direction.

Piercing nozzle

Pierce holes to extinguish fires behind the surfaces.
EX) Aircraft or building walls

protein foam

Made from animal by products.
Applied in 3-6%