23/09/2025
On Tuesday, an innovative high-pressure fire extinguishing technology was tested at the Stehr company's proving ground. Various special vehicles and systems were put through their paces to check their performance and off-road capability. The day's results provided valuable insights for optimizing the fire extinguishing technology.
The "smallest fire engine" demonstrated its unexpected off-road capabilities. The system, which consists of a high-pressure fire extinguishing unit on a special ATV trailer, is pulled by an off-road, 80-hp Polaris Crew all-wheel-drive vehicle. This setup allows firefighters to quickly access even impassable terrain.
In just four weeks, a VW Amarok was upgraded to a high-pressure rapid response vehicle. The 240-hp vehicle's flatbed holds all the equipment: a 25-hp diesel engine, a 200-bar high-pressure pump, a 500-liter aluminum tank, and a hose reel with 50 meters of high-pressure hose.
Fighting Wildfires with the Fendt Vario
To conclude the day's tests, one of Stehr's powerful tractors, a Fendt 728 Vario, was deployed. Equipped with a front and rear tank with a total capacity of 5,500 liters, the high-pressure fire extinguishing system with its 50-meter hose was first used. A wildfire was then simulated by spreading out a round bale of straw.
A front spray bar with five nozzles sprayed high-pressure water directly into the fire. A joystick-controlled, extendable high-pressure mist nozzle was then aimed at the source of the fire to extinguish it with precision.
The data gathered from these tests will now be analyzed to identify weak points and further optimize the technology so that users have the best possible equipment available to them.
