NH25, NH35, NH45, NH55

Combined normal/high pressure pumps 

Innovative technology. Ergonomic operation.

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.

Impresses with

  • Large water release quantities at normal pressure
  • Best extinguishing effect thanks to high pressure
  • Simple arrangement of normal and high-pressure on one shaft
  • Integration of wide range of foam proportioning systems

 

Technical data/standards

Combined pump standards - Rosenbauer
  • Single-stage normal pressure pump and four-stage high-pressure pump on a common shaft
  • Sealing via maintenance-free mechanical sealing
  • Low speed, so usually no gear-box needed - noise reduction
  • Design of the normal pressure housing as spiral housing with integrated diffuser for highest possible efficiency

NH25

  • Normal pressure output of up to 2,500 l/min at 10 bar
  • High pressure output of up to 400 l/min at 40 bar (max. 500 l/min)
  • Certified (normal pressure) according to EN1028 FPN 10-2000
  • Certified (high pressure) according to EN1028 FPN 40-250
  • UL classified in accordance with NFPA1901 150-500

NH35

  • Normal pressure output of up to 3,500 l/min at 10 bar
  • High pressure output of up to 400 l/min at 40 bar (max. 500 l/min)
  • Certified (normal pressure) according to EN1028 FPN 10-3000
  • Certified (high pressure) according to EN1028 FPN 40-250
  • UL classified in accordance with NFPA1901 150-750 

NH45 

  • Normal pressure output of up to 4,500 l/min at 10 bar
  • High pressure output of up to 400 l/min at 40 bar
  • Certified (normal pressure) according to EN1028 FPN 10-4000
  • Certified (high pressure) according to EN1028 FPN 40-250
  • UL classified in accordance with NFPA1901 150-1250

NH55 

  • Normal pressure output of up to 5,500 l/min at 10 bar
  • High pressure output of up to 400 l/min at 40 bar
  • Certified (normal pressure) according to EN1028 FPN 10-4000
  • Certified (high pressure) according to EN1028 FPN 40-250
  • UL classified in accordance with NFPA1901 150-1500
  • Outputs in accordance with NFPA1901 150-1500 (5,700 l/min at 10 bar)

High pressure stage version

Combined pumps with different pressure stages - Rosenbauer
  • Normal and high-pressure stage arranged on a common shaft
  • Arranged opposite one another for best possible axial thrust load compensation
  • High pressure switched on and off by opening or closing the water supply - no additional switch elements needed
  • Version of the high pressure pump also as centrifugal pump
  • Thus making it resistant to contamination
  • Smaller pressure surges through flat pump characteristic curve
  • Very good foam qualities with high-pressure FIXMIX system

Piston priming pump (PPP)

  • KAP Professional
  • Automatic priming

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.

  • High priming performance
  • Safe to operate thanks to oil bath lubrication and inlet/outlet valves made from extremely resistant plastic
  • Resistant to waste water
  • Fail-safe thanks to dual piston redundancy

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 drucken

The 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.

Absatz drucken

Operation and design

Highest level of user friendliness and ergonomics

 

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:

  • Integrated LCS (Logic Control System)
  • Illuminated control panel
  • Color coding of various unit conditions, foam, electrics
  • Uniform operation of all Rosenbauer products
  • Clear organization of display, control and mechanical controls
  • Ergonomically shaped handles - designed for firefighting gloves
  • Low operating height - screw-down valves at suction pipe level
  • Tilted display and control fields at eye level - safely and quickly legible
  • Visually attractive cover

Integrated, automatic FIXMIX around-the-pump foam proportioning system

Combined normal and high pressure pump - Rosenbauer

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.

Options

Modular system - a customized pump

The pumps of the N/NH series can be customized to requirements of firefighters - here's a brief extract:

OVERVIEW