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73 Cards in this Set

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Accordion hose load
A method of loading hose on a vehicle that results in a hose appearance that resembles accordion sections. It is achieved by standing the hose on its edge, then placing the next fold on its edge, and so on.
A device that joins hose couplings of the same type, such as male to male or female to female.
Attack engine
An engine from which attack lines have been pulled.
Attack hose (attack line)
Hose designed to be used by trained fire fighters and fire brigade members to combat fires beyond the incipient stage. (NFPA 1961)
Ball valves
Valves used on nozzles, gated wyes, and engine discharge gates. They consist of a ball with a hole in the middle of the ball.
Booster hose (booster line)
A noncollapsible hose used under positive pressure having an elastomeric or thermoplastic tube, a braided or spiraled reinforcement, and an outer protective cover. (NFPA 1962)
Butterfly valves
Valves that are found on the large pump intake valve where the suction hose connects to the inlet of the fire pump.
Relatively small-diameter underground pipes that deliver water to local users within a neighborhood.
Double-female adaptor
A hose adaptor that is used to join two male hose couplings.
Double-jacket hose
A hose constructed with two layers of woven fibers.
Double-male adaptor
A hose adaptor that is used to join two female hose couplings.
Dry hydrant
An arrangement of pipe permanently connected to a water source other than a piped, pressurized water supply system that provides a ready means of water supply for firefighting purposes and that utilizes the drafting (suction) capability of a fire department pump. (NFPA 1142)
Dry-barrel hydrant
A type of hydrant used in areas subject to freezing weather. The valve that allows water to flow into the hydrant is located underground, and the barrel of the hydrant is normally dry.
Dump valve
A large opening from the water tank of a mobile water supply apparatus for unloading purposes. (NFPA 1901)
A short fold placed in a hose when loading it into the bed; the fold prevents the coupling from turning in the hose bed.
Elevated water storage tower
An above-ground water storage tank that is designed to maintain pressure on a water distribution system.
Elevation pressure
The amount of pressure created by gravity. Also known as head pressure.
Fire hydraulics
The physical science of how water flows through a pipe or hose.
Flat hose load
A method of putting a hose on a vehicle in which the hose is laid flat and stacked on top of the previous section.
Flow pressure
The amount of pressure created by moving water.
Forward lay
A method of laying a supply line where the line starts at the water source and ends at the attack engine.
Four-way hydrant valve
A specialized type of valve that can be placed on a hydrant and that allows another engine to increase the supply pressure without interrupting flow.
Friction loss
The reduction in pressure resulting from the water being in contact with the side of the hose. This contact requires force to overcome the drag that the wall of the hose creates.
Gate valves
Valves found on hydrants and sprinkler systems.
Gated wye
A valved device that splits a single hose into two separate hoses, allowing each hose to be turned on and off independently.
Gravity-feed system
A water distribution system that depends on gravity to provide the required pressure. The system storage is usually located at a higher elevation than the end users.
Hard suction hose
A hose used for drafting water from static supplies (lakes, rivers, wells, and so forth). It can also be used for supplying pumps on fire apparatus from hydrants if designed for that purpose. The hose contains a semirigid or rigid reinforcement. (NFPA 1963)
Higbee indicators
Indicators on the male and female threaded couplings that indicate where the threads start. These indicators should be aligned before fire fighters start to thread the couplings together.
Horseshoe hose load
A method of loading hose in which the hose is laid into the bed along the three walls of the bed, so that it resembles a horseshoe.
Hose appliance
A piece of hardware (excluding nozzles) generally intended for connection to fire hose to control or convey water. (NFPA 1962)
Hose clamp
A device used to compress a fire hose so as to stop water flow.
Hose jacket
A device used to stop a leak in a fire hose or to join hoses that have damaged couplings.
Hose liner (hose inner jacket)
The inside portion of a hose that is in contact with the flowing water.
Hose roller
A device that is placed on the edge of a roof and is used to protect hose as it is hoisted up and over the roof edge.
Large-diameter hose (LDH)
A hose 3.5 inches (89 mm) or larger that is designed to move large volumes of water to supply master stream appliances, portable hydrants, manifolds, standpipe and sprinkler systems, and fire department pumpers from hydrants and in relay. (NFPA 1410)
Master stream device
A large-capacity nozzle that can be supplied by two or more hose lines of fixed piping. It can flow 300 gallons per minute. These devices include deck guns and portable ground monitors.
Medium-diameter hose (MDH)
Hose with a diameter of 2½ or 3 inches.
A fungus that can grow on hose if the hose isstored wet. Mildew can damage the jacket of a hose.
Mobile water supply apparatus
A vehicle designed primarily for transporting (pickup, transporting, and delivering) water to fire emergency scenes to be applied by other vehicles or pumping equipment. (NFPA 1901)
Municipal water system
A water distribution system that is designed to deliver potable water to end users for domestic, commercial, industrial, and fire protection purposes.
Normal operating pressure
The observed static pressure in a water distribution system during a period of normal demand.
Pitot gauge
A type of gauge that is used to measure the velocity pressure of water that is being discharged from an opening. It is used to determine the flow of water from a hydrant or nozzle.
Portable tanks
Folding or collapsible tanks that are used at the fire scene to hold water for drafting.
Primary feeders
The largest-diameter pipes in a water distribution system, which carry the greatest amounts of water.
Private water system
A privately owned water system that operates separately from the municipal water system.
A fitting used to connect a small hose line or pipe to a larger hose line or pipe. (NFPA 1142)
Remote-controlled hydrant valve
A valve that is attached to a fire hydrant to allow the operator to turn the hydrant on without flowing water into the hose line.
A water storage facility.
Residual pressure
The pressure that exists in the distribution system, measured at the residual hydrant at the time the flow readings are taken at the flow hydrants. (NFPA 24)
Reverse lay
A method of laying a supply line where the supply line starts at the attack engine and ends at the water source.
Rocker lugs (rocker pins)
Fittings on threaded couplings that aid in coupling the hoses.
Rubber-covered hose (rubber-jacket hose)
Hose whose outside covering is made of rubber, which is said to be more resistant to damage.
Secondary feeders
Smaller-diameter pipes that connect the primary feeders to the distributors.
Shut-off valve
Any valve that can be used to shut down water flow to a water user or system.
Siamese connection
A device that allows two hoses to be connected together and flow into a single hose.
Small-diameter hose (SDH)
Hose with a diameter ranging from 1 to 2 inches.
Soft suction hose
A large-diameter hose that is designed to be connected to the large port on a hydrant (steamer connection) and into the engine.
Spanner wrench
A type of tool used to couple or uncouple hoses by turning the rocker lugs on the connections.
Split hose bed
A hose bed arranged to enable the engine to lay out either a single supply line or two supply lines simultaneously.
Split hose lay
A scenario in which the attack engine forward lays a supply line from an intersection to the fire, and the supply engine reverse lays a supply line from the hose left by the attack engine to the water source.
Static pressure
The pressure that exists at a given point under normal distribution system conditions measured at the residual hydrant with no hydrants flowing. (NFPA 24)
Static water source
A water source such as a pond, river, stream, or other body of water that is not under pressure.
Steamer port
The large-diameter port on a hydrant.
Storz-type (nonthreaded) hose coupling
A hose coupling that has the property of being both the male and the female coupling. It is connected by engaging the lugs and turning the coupling a one-third turn.
Supply hose (supply line)
Hose designed for the purpose of moving water between a pressurized water source and a pump that is supplying attack lines. (NFPA 1961)
Tanker shuttle
A method of transporting water from a source to a fire scene using a number of mobile water supply apparatus.
Threaded hose coupling
A type of coupling that requires a male fitting and a female fitting to be screwed together.
Water hammer
The surge of pressure that occurs when a high-velocity flow of water is abruptly shut off. The pressure exerted by the flowing water against the closed system can be seven or more times that of the static pressure. (NFPA 1962)
Water main
A generic term for any underground water pipe.
Water supply
A source of water for firefighting activities. (NFPA 1144)
Water thief
A device that has a 2½-inch inlet and a 2½-inch outlet in addition to two 1½-inch outlets. It is used to supply many hoses from one source.
Wet-barrel hydrant
A hydrant used in areas that are not susceptible to freezing. The barrel of the hydrant is normally filled with water.
A device used to split a single hose into two separate lines.