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The combined normal and high pressure pumps of the NH series enable output at different pressure stages. Normal and high-pressure impellers opposite each other on a common pump shaft result in an ideal axial thrust load compensation.
Through this arrangement, no additional drive is required for the high-pressure stage of the combined pumps, which could be easily turned on or shut down by opening or closing the water supply.
Thanks to the unique drive system, the priming pump is always on stand-by to reduce wear and can be switched on at any time.
The priming pump is driven over a V-belt from the lantern or the gear-box. During the priming process the belt is tensioned via a lever. Once the priming process finishes, the belt is released.
Absatz druckenThe optional automatic priming system offers maximum operational safety during water supply.
The priming process starts automatically - the V-belt will be tensioned for this. When the pressure builds to about 1.5 bar inside the pump, the priming process is stopped by an extending cylinder that loosens the belt.
In the development of the new pump series, special importance was placed on the following measures to increase user friendliness and ergonomics to the highest level:
For the NH pump, the integrated around-the pump foam proporionin system FIXMIX, as well as the high pressure FIXMIX for foam proportioning at high-pressure side is available.
The pumps of the N/NH series can be customized to requirements of firefighters - here's a brief extract: