Main applications PNW
- Flood / stormwater holding tanks
- Flood control
- Heat transfer, Cooling circuits
- Industry engineering
- Lake, Damwater extraction
- Municipal waste water
- Sea -& Riverwater Extraction
- Sludge treatment
- Special processes
- Waste water
- Water Extraction
Vertical tubular casing pump with axial propeller, single-stage, with maintenance-free Residur shaft bearings, discharge nozzle arranged above or below floor.
Application pump PNW
Irrigation and drainage systems, stormwater pumping stations, hand ling of raw and pure water, water supply systems, handling of cooling water.
Variants pump PNW :
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dismantling and re-assembly, thae entire rotor can be withdrawn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.
Control pump PNW :
three options to boost efficiency.
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 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 PNW
|Q (50Hz)||290.0 – 9,000.0 (m³/h)|
|H (50Hz)||0.5 – 10.0 (m)|
|Type of bearing||Plain bearings|
|Casing partition||Radially split|
|Drive frequency||50 Hz /60 Hz|
|Type of drive||Electric motor|
|Drive voltage||Low voltage|
|No. of impeller entries||Single entry|
|Type of installation||Long-coupled|
|Type of coupling||Direct|
|Type of lubrication||Product lubrication|
|Max. permissible fluid temperature||60.0 (°C)|
|Maximum operating pressure||PN 10|
|Pump set location||Wet well|
|Type of casing||Tubular casing|
|Type of impeller||Axial, Propeller|
|Type of connection||Flange|
|eClass assignment||36410000, 36410106, 36410100|
|Free passage||170.0 (mm)|
|Shaft seal type||Gland packing|
|Main applications||Waste water / sewage, Water|
|Casing material||Ni-Resist, Chrome nickel steel, Carbon steel|
|Maximum drive rating||320.0 (kW)|
|Type of installation||Stationary|
|Maximum speed of rotation||1500.0 (1/min)|