Chpt 6 Flashcards
Is used to deliver water from a static source or from a fire hydrant to an attack pumper
Supply hose
Is used to discharge water from an attack pumper onto the fire
Attack hose
The _____ refers to the inside diameter of the hose when it is filled with water
Nominal hose size
Ranges in size from 1 inch to 2 inches in diameter
Small diameter hose
Th hose that is most commonly used to attack interior residential structure fires is either __________ in diameter
1 1/2 inch or 1 3/4 inch
Has a diameter of 2 1/2 in or 3 inches
Medium diameter hose
When used as an attack line, the 3 in size is more often used to deliver water to a __________
Master stream device or fire department connection
Has a diameter of 3 1/2 inches or more
Large diameter hose
Attack hose is designed to be used for
Fire suppression
Most fire departments use either ________ hose as a primary attack line for most fires
1 1/2 or 1 3/4 in
The primary difference between 1 1/2 in and 1 3/4 in hose is the amount of ________ that can flow through the hose
Water
The ______ is the most widely used primary attack lines in the fire service
1 3/4 in
A ______hose is used as an attack line for fires that are too large to be controlled by a 1 1/2 in or 1 3/4 in hoseline
2 1/2 inch hose
The use of ______ is typically limited to small outdoor fires and trash dumpsters
Booster hose
Is used to deliver water to an attack pumper from a pressurized source, which could be a hydrant or another engine working in relay operation
Supply hose
A ______ is a short section of LDH that is used to connect a fire department pumper directly to the larger streamer outlet on a hydrant
Soft sleeve hose
Is a special type of supply hose that is used to draft water from a static source such as a river, lake, or portable drafting basin
Hard suction hose
A ______ is any device used in conjunction with a fire hose for the purpose of delivering water
Fire hose appliance
A ____ is a device that splits one hose stream into two hose streams
Wye
It is used primarily for 1 3/4 in attack lines that stretch for long distances from the fire apparatus
Wye
The wye that is most commonly used in the fire service has _____
2 1/2 in inlet and splits into two 1 1/2 in outlets
A ______ is equipped with two quarter turn ball valves so that the flow of water to each of the split lines can be controlled independently
Gated wye
The use of a ______ avoids the need to shut down the hoseline supplying the wye while attaching this second line
Gated wye
A ______ is similar to a gated wye, but includes an additional 2 1/2 outlet
Water thief
A ______ can be placed near the entrance to a building to provide the water for interior attacks
Water thief
A ________ is a hose appliance that combines two hoselines into one.
Siamese connection
The most commonly encountered type of ______ combines two 2 1/2 in hoselines into a single 2 1/2 in hoseline
Siamese connection
Most Siamese connections contain a built in ______ to allow for one hoseline to be charged before the other one is connected
Clapper valve
Are commonly installed on the fire department connections that are used to supply water to standpipe and sprinkler systems in buildings
Siamese connections
Are used for connecting hose couplings that have the same diameter but dissimilar threads
Adapters
A ______ is used to attach a smaller diameter hose to a larger diameter hose
Reducer
A ______ is a device that is placed over a section of hose to stop a leak
Hose jacket
This device should only be used in cases where it is not possible to quickly replace the leaking section of hose
Hose jacket
A ____ is used to temporarily stop the flow of water in a hoseline
Hose clamp
Are used to control the flow of water in a pipe or hoseline
Valves
Are used on nozzles, gated wyes, and engine discharge gates
Ball valves
Are the most common discharge valves found on fire pumps
Ball valves
Are found on hydrants and on sprinkler systems
Gate valves
Are often found on large pump intake connections where a hard suction hose or soft sleeve is connected
Butterfly valves
This appliance, which is attached to a fire hydrant, is used in conjunction with a pumper to increase water pressure in relay operations
Relay or hydrant valves
Are attached to the discharge end of attack lines to give fire streams shape and direction
Nozzles
Flow 40 gpms or less. They are primarily used on booster lines their application is limited to small outside fires
Low volume nozzles
Are used on hoselines ranging from 1 1/2 in to 2 1/2 in in diameter
Handline nozzles
Usually flow water at a rate between 60 gpm and 350 gpm
Handline streams
Are used on deck guns, portable monitors, and ladder pipes that flow more than 350 gpm
Master stream nozzles
The _______ enables the firefighter at the nozzle to start or stop the flow of water
Nozzle shut off
The most commonly encountered nozzle shut off mechanism is a _______
Ball valve or quarter turn valve
Most smooth bore nozzles are designed to operate at _____ where as many adjustable stream nozzles require pressures of 75 psi to 100 psi
50 psi
Nozzles produce fine droplets of water
Fog stream
Discharging 1 gallon of water in 100 ft of involved interior space may produce enough steam to extinguish a fire in ____
30 seconds
The advantage of ________ is that they produce less reaction force, which makes them easier to control and advance
Low pressure nozzles
A _____ delivers a preset flow at the rated discharge pressure. The nozzle could be designed to flow 30, 60, or 100 gpm
Fixed gallonage fog nozzle
An ______ allows the operator to select a desired flow from several settings by rotating a selector bezel to adjust the size of the opening.
Adjustable gallonage fog nozzle
An ______ can deliver a wide range of flows.
Automatic adjusting fog nozzle
A typical Automatic adjusting fog nozzle could have an operating range of 90 to 225 gpm while maintaining a discharge pressure of______
Automatic adjusting fog nozzle 100 psi
Are used to make holes in auto mobile sheet metal, aircraft, or building walls, or ceilings so as to extinguish fires behind surfaces
Piercing nozzles
Are used to fight fires in cellars and other accessible Automatic adjusting fog nozzle places such as attics and cocklofts
Cellar nozzles and Bresnan distributor nozzle
If the engine company has its hose set up for a forward lay, the coupling to come off will be
Female
The handle that controls this valve is called a
Bale
The simplest smooth bore nozzle consists of a shut off valve and a ______ that gradually decreases the diameter of the stream to a size smaller than the hose diameter
Smooth bore tip
This type of nozzle has a longer reach than a combination fog nozzle operating at a straight stream setting.
Smooth bore
Is capable of deeper penetration into burning materials, resulting in quicker fire knockdown and extinguishment.
Smooth bore nozzle
