High pressure hose

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Fixed high-pressure jet pipe on a high-pressure rapid attack device of a tank tender.

A high-pressure hose is used by the fire department as a so-called rapid attack device in vehicles with a high-pressure pump. Fire fighting vehicles generally have a fire fighting centrifugal pump with a nominal pressure of 8  bar . In recent years, however, pumps with an output pressure of up to 40 bar have been increasingly used, a pressure that normal hoses would not be able to withstand. Therefore new hoses had to be developed - the high pressure hoses . They are firmly attached to the pump and wound on a reel .

High-pressure hoses are up to 60 meters long (sometimes longer, 80-90 m exist in real life) and at their end there is a permanently attached high-pressure jet pipe from which the extinguishing agent is discharged. The hose is withdrawn using an insertable crank on the reel or a motor-driven reel.

literature

• Lothar Schott, Manfred Ritter: Fire Brigade Basic Course FwDV 2 . 20th edition. Wenzel-Verlag, Marburg 2018, ISBN 978-3-88293-220-1 .