Vertical Multistage Pumps
Vertical multistage high-pressure centrifugal pumps with a ring-section design. Suction and discharge nozzles of the same nominal diameter are arranged opposite each other (in-line). Pump and motor are close-coupled in a monoblock unit, supplied as standard with an IE3 efficiency class motor.
Thanks to their vertical shaft and in-line layout, these pumps take up little floor space and deliver efficient performance wherever high pressure is needed — from booster and pressurisation systems to irrigation, washing plants and industrial process lines. Cast iron and stainless steel casing options cover a wide range of fluids, from clean water to aggressive media.
Main Applications
- Sprinkler irrigation systems
- General irrigation systems
- Washing plants
- Fire-fighting systems
- Pressure boosting and booster set systems
- Industrial facilities
- Water supply and distribution systems
- Heating, ventilation and air-conditioning (HVAC) systems
- Marine and shipbuilding applications
Technical Data
| Max. flow rate | 192 m³/h |
|---|---|
| Min. flow rate | 0.2 m³/h |
| Max. head | 415 m |
| Min. head | 4 m |
| Max. operating pressure | 40 bar |
| Discharge nominal pressure | PN 40 |
| Fluid temperature | -20 °C … +140 °C |
| Mains frequency | 50 Hz / 60 Hz |
| Mains voltage | 230 V / 400 V / 460 V |
| Inlet connection | Flanged |
| Drive | Electric motor |
| Suction type | Normal suction |
Material Options
| Component | Cast iron casing | Stainless steel casing (304) | Stainless steel casing (316) |
|---|---|---|---|
| Pump casing | Grey cast iron EN-GJL-250 (JL1040) | Stainless cast steel 1.4308 (AISI 304 equivalent) | Stainless cast steel 1.4408 (AISI 316 equivalent) |
| Hydraulic parts | Stainless steel 1.4301 (AISI 304) and stainless cast steel 1.4308 | Stainless steel 1.4301 (AISI 304) and stainless cast steel 1.4308 | Stainless steel 1.4404 (AISI 316L) and stainless cast steel 1.4408 |
| Base plate | Integral with casing | Ductile / grey cast iron (JS1030 / JL1040), stainless cast steel 1.4308 optional | Ductile / grey cast iron (JS1030 / JL1040), stainless cast steel 1.4308 optional |
Which material? Cast iron casing is recommended for clean water, heating and cooling circuits; AISI 304 stainless steel for drinking water, food applications and softened water; AISI 316 stainless steel for seawater, chlorinated water and mildly chemical fluids.
Advantages
Energy Efficiency
- High hydraulic efficiency for low operating costs.
- Very low NPSH values for efficient, cavitation-free operation.
- Motors up to IE5 efficiency class with speed control for maximum energy efficiency; pump performance can be monitored at any time.
Flexibility
- A wide choice of materials and connections suits a broad range of applications.
- Extended temperature and pressure range.
- Specially developed low-NPSH impeller options for critical suction conditions.
Reliability
- Fluid-lubricated tungsten carbide plain bearings run trouble-free for long periods.
- A robust pump foot and torsion-resistant casing provide structural strength.
- O-rings recessed in their seats ensure reliable sealing.
Easy Servicing
- Compatible with all mechanical seals to EN 12756.
- Cartridge seal option and easy-access design for fast seal replacement.
Long Service Life
- Stainless steel hydraulic parts resist corrosion and extend pump service life.
Energy Savings
- Variable speed control keeps the pump running only as hard as needed.
- The magnet-free synchronous reluctance motor option reaches IE5 efficiency level.*
* The IE5 efficiency class (IEC/TS 60034-30-2) motor option is available in certain power ranges. Please contact our sales team to check suitability.
Design and Construction Features
- Ring-section, multistage hydraulic design
- In-line suction and discharge nozzles of the same nominal diameter
- Close-coupled (monoblock) pump–motor design, IE3 motor as standard
- Optional magnet-free synchronous reluctance motor in IE4/IE5 efficiency class, operated with a speed controller that requires no rotor position sensor
- Motor mounting dimensions to EN 50347, overall dimensions to DIN V 42673
- ATEX-compliant version available for explosive atmospheres
To choose the right model, send us your required flow rate, head, fluid type and temperature via the Request a Quote form; our technical team will specify the most suitable pump.
How to Choose
- Determine the flow rateThe total water demand at peak use (m³/h) determines the pump series and impeller size.
- Calculate the headAdd static height, pipe friction losses and the required outlet pressure; the result sets the number of stages of the vertical pump.
- Define the fluid and temperatureClean water, hot water or chemical-laden fluid; the operating temperature between -20 °C and +140 °C affects mechanical seal selection.
- Select material and motorCast iron or stainless steel casing depending on the fluid; an IE3 motor or a frequency-controlled high-efficiency motor for energy savings.
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