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Rosenbauer offers both, around-the-pump foam proportioning systems as well as direct-injection foam proportioning systems for producing fire fighting foam with truck-mounted fire pumps. All proportioning systems automatically adjust to the water pressure or water flow in foam operations. Models are available for normal pressure as well as high-pressure applications.
The around-the-pump foam propotioning systems are integrated directly into the pump. The direct-injection proportioning systems are also optimally integrated to the piping.
All Rosenbauer around-the-pump foam proportioning systems automatically adjust to the water flow and pressure.
In direct-injection foam proportioning systems, either the water flow quantity is measured and the foam compound and the set proportioning ratio are adjusted to this flow quantity accordingly (e.g. RFC Admix Variomatic), or this is performed out via a Venturi proportioner (e.g. for AQUAMATIC and HYDROMATIC).