Main applications PNZ

  • Cooling water and condensate
  • Energy
  • Flood / stormwater holding tanks
  • Flood control
  • Heat transfer, Cooling circuits
  • Industrial waste water
  • Industry engineering
  • Lake, Damwater extraction
  • Municipal waste water
  • Nuclear Power Stations
  • Power Stations < 100 MW
  • Power Stations > 100 MW
  • Sea -& Riverwater Extraction
  • Special processes
  • Turbine Island
  • Waste water
  • Water
  • Water Extraction
  • Watertransport

Design PNZ

Vertical tubular casing pump with axial propeller. Pump inlet with bellmouth or suction elbow, pull-out design available, discharge nozzle arranged above or below floor, flanges to DIN or ANSI standards available.

Application pump PNZ

Handling of raw, pure, service and cooling water in industry, water supply systems, in power stations and seawater desalination plants.

Variants pump PNZ :

pull-out or non-pull-out.

KSB’s tubular casing pumps can be supplied in two design variants.
The pull-out design is easier to service and maintain: During
dismantling and re-assembly, thae entire rotor can be withdrawn
for inspection and maintenance. This minimises downtime for
maintenance work and reduces life cycle costs (LCC).
By contrast, the investment for non-pull-out type pumps is
considerably lower because a number of components can be
dispensed with. This reduces both the weight of the pump and
the initial costs.

Desing Details pump PNZ

three options to boost efficiency.

Pre-swirl control

Controlling the approach flow to the impeller by means of pre-swirl control equipment is particularly suitable for applications involving significant variations of head in combination with a relatively constant rate of flow, for example to compensate for tidal flow or for combined operation (cooling tower/fresh water).
The pre-swirl controller can be adjusted either during pump operation or during a standstill. Pre-swirl control equipment will considerably improve pump efficiency at any discharge head and flow rate, and make the pump run more smoothly.

Blade pitch adjustment

Blade pitch adjustment is the control method of choice for pumping conditions characterised by minor changes in head and major variations in flow rate. The infinitely variable blade pitch angle can either be adjusted by means of an electro-mechanical adjustment gear or manually. With either method, it does not matter whether
the pump is running or not. The operating point can be precisely adjusted to achieve the best possible efficiency

Speed control

Speed control is ideally suited for systems characterised by fluctuating flow rates and high energy costs. Variable speed systems can be used in all applications where the pump driver is either an electric motor or a diesel engine.
Speed control is the best method of “fine-tuning” the pump so that it runs at its best efficiency point

Overview of technical data PNZ

Q (50Hz)5,000.0 – 65,000.0 (m³/h)
H (50Hz)7.0 – 15.0 (m)
Type of bearingRolling element and plain bearings
Casing partitionRadially split
Drive frequency50 Hz /60 Hz
Type of driveElectric motor
Drive voltageLow voltage, high voltage
No. of impeller entriesSingle entry
Type of installationLong-coupled
Type of couplingDirect, Gear
Type of lubricationOil / Product lubrication
Max. permissible fluid temperature80.0 (°C)
Maximum operating pressurePN 6, PN 9
Pump set locationWet well
Suction characteristicsNon-priming
Type of casingTubular casing
Type of impellerAxial, Propeller
Type of connectionFlange
UNSPSC classification4015150300
eClass assignment36410000, 36410106, 36410100
Installation positionVertical
Shaft seal typeGland packing, Mechanical seal
Main applicationsWaste water / sewage, Energy, Water
Casing materialCarbon steel, Duplex steel, Chrome nickel steel
Type of installationStationary
Maximum speed of rotation990.0 (1/min)