Hose Practices (7th Edition)
Chapter 1-Hose & Coupling Construction
Test Review

• The outer layer of fire hose is usually woven-jacket.
• Booster hose resembles fire extinguisher hose.
• Synthetic fibers are most commonly used in woven-jacket hose.
• Most fabric-jacketed hose is double-jacket (2 layers).
• Preconnected hose on standpipe connections should be removed and replaced with fire service hose when in use.
• Booster hose is made of several layers of braided, rubberized material.
• Booster hose is usually carried on reels and is available in 3/4 or 1 inch.
• Soft sleeve hose is used to transfer water from hydrant to pumper.
• Hard suction hose is used for drafting operations.
• Curing is a manufacturing process that involves the application of heat and pressure to set the hose shape, increases smoothness, and bond it to the outer jacket.
• The primary requirement of hose is resistance to detachment when pressurized or dragged.
• Attack hose is used for controlling and extinguishing fire.
• Intake hose is used to connect a pumper to a water source.
• Extinguisher hose transports extinguishing agents from a container to a nozzle.
• Supply hose moves large volumes of water at low pressure.
• Braided means covering a rubber liner with several alternate layers of braided yarn and rubber.
• Lined woven-jacket is constructed of 1 or more fabric jackets with a rubber tube inner lining.
• Unlined woven-jacket is constructed of only a fabric tube.
• Wrapped hose is constructed by folding several layers of fabric around a rubber tube with heavy-gauge wire coiled between the fabric layers.
• Conventional extinguisher hose has a maximum discharge pressure of 400 psi.
• High-pressure extinguisher hose has a maximum discharge pressure of 1,200 psi.
• Forestry hose is most commonly used in wildland firefighting.
• Forestry and standpipe hose is single-jacketed and lined or unlined.
• When forestry hose has been designed to leak through the outer jacket, the hose is more heat-resistant.
• The most common size of standpipe hose is 1 1/2 inch.
• The main disadvantage of standpipe hose is deterioration with age.
• Medium diameter hose has a large amount of friction loss in long distance lays.
• Thermoplastic linings have greater tensile strength and are lighter than rubber.
• Calendering is a liner process where rubber is pressed between opposing rollers to form a flat sheet, then a tube is formed by bonding the edges together.
• Extrusion is a liner process where a heated mass of rubber is forced under pressure through an orifice of an extrusion machine die to produce a seamless tube.
• Calendering is the most common method of liner production today.
• Lugs on threaded couplings serve to tighten and loosen connections.
• Pressure loss in long hose lays using medium diameter hose can be overcome by laying several parallel lines and/or placing pumpers at intervals to boost pressure.
• The 5 sizes of large diameter hose manufactured is 3 1/2", 4", 4 1/2", 5", and 6".
• The three methods of manufacturing couplings are Forging, Extruding, and Casting.
• Forged couplings are the strongest.
• Cast couplings are the weakest.
• The 3 basic coupling designs are: Threaded, Sexless, and Snap.
• Storz and Quarter-Turn are types of sexless couplings.
• The methods used to attach couplings to hose are the Collar, Banding, Expansion ring, Screw-in Expander, and Tension ring methods.