Flashcards in Chapter #15 Fire Hose Deck (122)
Standard on Fire Hose
A fire hoses measured diameter refers to what measurement?
The internal diameter.
What is the traditional length of fire hose in North America?
Used to connect the pumper to a hydrant or other water source.
Suction hose (intake hose).
Standard on Automotive Fire Apparatus.
Large diameter hose, minimum of 15' long, used to connect a pumper to a pressurized source (hydrant). Sizes range from 2 1/2" to 6". Has two female or non threaded couplings.
Soft Sleeve Hose
Non collapsible hose that operates under a vacuum. Used to draft water from a static water source. Generally comes in 10' sections. Sizes 2 1/2" to 6". Two female or non threaded couplings.
Hard suction hose
Standard for Fire Hose Connections.
NFPA 1963 requires that all brands of fire hose coupling threads have what?
What is the required thread type of fire hose called?
American National Fire Hose Connection Screw Threads. (National Hose)
What three types of alloys are used to make couplings?
Brass. Aluminum. Magnesium
Name three ways that couplings are manufactured.
Cast. Extruded. Drop Forged
Very weak. Only found on occupant type hose.
Lightweight and high strength. Usually made of aluminum. Stronger then cast couplings.
Made of brass or other malleable metals. Strongest and most expensive couplings.
A male coupling attached to a female coupling is called what?
A set (three piece coupling)
Name three types of coupling lugs.
Pin, Recessed, Rocker
Lug found on older fire hose. Not used anymore due to catching.
Lug found on booster hose. Enables hose to be wound up into a reel. Pin-lug spanner used to break connection.
Modern fire hose lug. Prevents hose from catching on objects.
Located on swivels of large intake supply or suction hose.
Handles or extended lugs.
Connected with locks or cams and not screw threads. Some have male and female ends, most are sexless.
Non threaded coupling
Name two types of sexless couplings.
Quarter turn. Stortz (turn 1/3)
T or F Can dirt become lodged into a sexless couplings grooves, giving the impression that it is a tight seal when it may not be?
Name six causes of fire hose damage.
Mechanical, Thermal, Organic, Chemical, Corrosion, Age deterioration.
Special cold resistance hose is rated for temps down to what?
Name three methods of removing frozen fire hose.
Melt the ice with a steam generating device. Chop the hose out with an axe. Wait until it has thawed.
Should fire hose that was frozen be service tested prior to being put back into service?
What types of fire hose can be affected by mold and mildew?
Hose with a woven jacket of cotton or other natural fiber.