The hose that leads from a fire engine pump to a point of fire is called the booster line.
Booster line hose (sometimes also referred to as a firehose or red line) is a high-pressure hose that carries fire reta.rdant (such as water or foam) to extinguish a small fire. It can be attached to a fire engine pump, a hydrant, or even a building's plumbing system.
The booster hose is usually rubber jacketed, with a diameter of around 1 inch. The hose is fairly flexible and think-walled. Usually, the booster line hose is carried on a reel rather than being stored flat.
Attached below is a booster hose shown attached to a fire engine pump in Vaughan, Ontario.
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