What are the types of hose appliances and tools a firefighter may need to use? Hose roller – protect hose from the mechanical damage of dragging hose over corners such as roof edges and windowsills. Spanner Wrench/Hydrant Wrench/Rubber mallet – used to tighten hose couplings, loosen hydrants, and tighten hydrants.
What kind of hose do firefighters use?
Forestry hose is a fabric-covered, flexible hose used to fight fires in grass, brush, and trees where a lightweight hose is needed to maneuver it over steep or rough terrain. Forestry hose comes in 1.0 and 1.5 in (25 and 38 mm) diameters and is designed to operate at pressures up to about 450 psi (3,100 kPa).
What are the hose appliances?
A hose appliance is any piece of hardware used in conjunction with delivering water.
Which of the following are the most commonly used types of fire hose couplings?
~the most common fire hose couplings metals are brass and aluminum.
What is an appliance firefighting?
Appliance. Term for fire suppression equipment used by firefighters to manage or direct a water stream.
What are the three basic fire hose characteristics A firefighter must understand?
What are the three basic fire hose characteristics a firefighter must understand? Hose construction – to be reliable, fire hose must be constructed of the best materials available. Most hose is flexible, watertight, and has a smooth rubber or neoprene lining covered by a durable jacket.
What is Storz coupling?
The Storz coupling is a type of standardized fittings connecting fire hoses, especially large diameter ones, to fire hydrants, pumps, and the inlets so that water can be supplied to fire sprinklers or standpipe systems.
What is hard suction hose most commonly used for?
A hard suction 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. It is designed to remain rigid and will not collapse when a vacuum is created in the hose to draft the water into the pump.
Which types of fire hose couplings are very weak and only found on occupant use fire hose?
Cast — Cast couplings are very weak and only found on occupant-use fire hose. They often crack if reattachment to the hose is attempted. Extruded — Extruded couplings are usually made of aluminum or aluminum al- loy, allowing for their lightweight and high strength.
Why are fire hoses different colors?
A fire hydrant fresh from the factory is typically this chrome yellow color to make it highly visible. … The colors indicate the rated water-flow capacity of that particular hydrant: Red indicates water-flow capacity of less than 500 gallons-per-minute (GPM). Orange indicates water-flow capacity of 500 to 999 GPM.
What is NPSH pipe?
It is often referred to as “fire hose thread”. … Fire hoses with National Pipe Straight Hose Thread (NPSH) has the same threads per inch as National Pipe Thread (NPT) but the threads do not taper. This allows a female coupling to thread onto a NPT fitting without being a permanent connection.