Industrial pumps & flow solutions
Engineered flow.Built for industry.
Industrial pumps, spare parts and engineered replacement solutions for oil, marine, energy and process applications.
From established European pump technologies to carefully selected cost-efficient alternatives.
Three-screw pump — schematic arrangement
01Power rotor02Idler rotors03Casing04Shaft seal05Bearing06Drive shaft- 01Industrial pumps
- 02Spare parts
- 03Cross-reference
- 04Technical selection
- 05International supply
Identification
Have an old pump?Start with the nameplate.
Send us the manufacturer, model or simply a photo of the pump nameplate. We can help identify a suitable replacement, compatible part or alternative pump.
Useful details
- Manufacturer and model designation
- Serial number or production number
- Rated flow, head or differential pressure
- Fluid, temperature and viscosity
- Motor rating, speed and voltage
Nameplate, photo or drawing
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Product scope
Pump technologies
Rotary and centrifugal pump technologies for lubrication, transfer and process duties — supplied as bare shaft pumps, complete units or engineered assemblies.
- 01
Three-screw pumps
For lubrication oils, fuels and other clean lubricating fluids.
- 02
Twin-screw pumps
For demanding transfer applications and a wide viscosity range.
- 03
Centrifugal pumps
For industrial process, utility and circulation applications.
- 04
Progressing cavity pumps
For viscous, abrasive and solids-containing fluids.
- 05
Pump systems
Pump, motor, coupling, baseplate, seal and engineered assemblies.
- 06
Spare parts
Original, replacement and compatible components for existing pump installations.
Replacement solutions
Replace the pump.Not the process.
A replacement only makes sense if it fits the duty, the fluid and the installation. We work from the operating data first, then discuss sourcing.
Selection pipeline
- 01
Existing pump
Nameplate, model, drawing or part number.
- 02
Application review
Duty point, fluid and installation constraints.
- 03
Cross-reference
Comparable pumps and interchangeable components.
- 04
VELLKEN solution
Original, compatible or alternative proposal.
What we review
Every cross-reference is checked against the parameters that actually decide whether a pump can be exchanged.
- 01Flow
- 02Head
- 03Differential pressure
- 04Medium
- 05Viscosity
- 06Temperature
- 07Materials
- 08Sealing
- 09Connection dimensions
- 10Rotation
- 11Speed
- 12Motor
- 13Installation envelope
Possible outcomes
Original
The original pump or original component, sourced through available channels.
Compatible
A component built to fit and function in the existing installation.
Alternative
A different pump selected to cover the same duty point and interfaces.
Cross-reference
Running an ALLWEILER pump?
You may have more than one sourcing option.
Cross-reference scope
We can discuss replacement paths for screw, centrifugal and progressing cavity pumps from manufacturers such as:
- ALLWEILER
- IMO
- Bornemann
- KRAL
- Leistritz
- NETZSCH
- SEEPEX
- KSB
- Grundfos
- Sulzer
Manufacturer names are used for identification and cross-reference purposes only. VELLKEN is an independent supplier.
- 01
Original sourcing
The original pump or part, quoted through available supply channels.
- 02
Compatible components
Wear parts and internals manufactured to fit the existing pump.
- 03
Alternative pump selection
A technically equivalent pump selected around your duty point.
Commercial logic
Why consider an alternative?
Because the sourcing decision is rarely only about the pump itself.
- 01
Acquisition cost
Budget reality for repeat units, spare pumps and secondary duties.
- 02
Lead time
Delivery windows that fit a shutdown, not the other way around.
- 03
Spare part availability
How easily wear parts can be obtained over the coming years.
- 04
Serviceability
Whether the unit can be maintained with your own service capability.
- 05
Application compatibility
Fluid, temperature, materials and sealing must still match the duty.
- 06
Lifecycle considerations
Expected running hours, criticality and total cost over service life.
The cheapest pump is not automatically the best choice. A unit that fails early, runs outside its efficient range or cannot be serviced locally becomes expensive.
A premium brand is not automatically the right answer either. High price does not prove that a specific manufacturer is required for a specific duty point.
We don't start with the brand.We start with the duty point.
Flow, head, fluid and installation define the pump. The nameplate comes afterwards.
Engineering data
Tell us the duty.We'll help define the pump.
The more of this datasheet you can fill in, the tighter the selection. Unknown values are normal — we work with what exists.
Final pump selection is always confirmed technically before an order is released.
Duty data sheet
- 01FlowRequired capacity at the duty point—m³/h
- 02HeadTotal dynamic head—m
- 03Differential pressureDischarge minus suction pressure—bar
- 04FluidMedium and, if relevant, its grade——
- 05ViscosityAt operating temperature—cSt
- 06TemperatureOperating and, if known, range—°C
- 07DensityAt operating temperature—kg/m³
- 08SolidsContent and particle size—%
- 09MaterialsCasing, rotating parts, elastomers——
- 10SealMechanical seal, packing or magnetic drive——
- 11SpeedFixed speed or variable drive—rpm
- 12MotorRated power and frame—kW
- 13VoltageSupply voltage—V
- 14Frequency50 or 60 Hz—Hz
- 15InstallationOrientation, baseplate, envelope——
- 16Existing pumpManufacturer, model, serial number——
Applications
Industries
Pump duties differ far more between applications than between catalogues. These are the environments we work with.
Oil & Gas
Crude and product transfer, fuel handling, and lubrication duties across upstream, midstream and refining installations.
Lubrication Systems
Oil supply for turbines, gearboxes, compressors and large rotating machinery, where stable flow matters more than peak output.
Marine
Fuel transfer, lube oil, cargo and auxiliary duties with tight installation envelopes and long service intervals.
Power Generation
Turbine lubrication, fuel oil systems, seal oil and auxiliary circuits in conventional and combined-cycle plants.
- 05
Chemical & Process
Process transfer and dosing duties where material compatibility, sealing and temperature define the selection.
- 06
Industrial Machinery
OEM and retrofit pumps for machine tools, hydraulic units, filtration skids and production equipment.
- 07
Water & Wastewater
Circulation, transfer and sludge duties, including viscous and solids-containing media.
- 08
Energy
Biofuel, heat transfer and balance-of-plant circuits across renewable and hybrid energy installations.
Spare parts
Keep the installation.Replace what wears.
A worn rotor set or a failed seal does not require a new installation. In most cases the wear parts can be replaced within the existing pump.
Send us a part number, drawing, nameplate or photo.
- 01
Mechanical seals
Cartridge and component seals, with face and elastomer options.
- 02
Screw sets
Matched power and idler rotor sets for screw pumps.
- 03
Rotors
Rotors and impellers, including coated and hardened variants.
- 04
Stators
Elastomer stators for progressing cavity pumps.
- 05
Pump liners
Casing liners and bushings that define internal clearances.
- 06
Bearings
Rolling and sleeve bearings with the matching retaining parts.
- 07
Gaskets
Flange, cover and casing gaskets in application-suited materials.
- 08
O-rings
Elastomer sets selected for fluid and temperature compatibility.
- 09
Couplings
Flexible couplings, elements and coupling guards.
- 10
Pump internals
Shafts, sleeves, wear plates, balance pistons and fasteners.
Process
How it works
Four steps from an existing pump to a commercial offer.
- 01
Send
Pump model, nameplate, drawing or operating data.
- 02
Review
We review the application and compatibility requirements.
- 03
Select
Original, compatible or alternative solution.
- 04
Quote
Commercial offer and delivery option.
About
About VELLKEN
VELLKEN combines practical industrial pump expertise with access to European and international sourcing channels.
We focus on technically suitable and commercially sensible solutions rather than pushing a single manufacturer.
Technical first
Selection starts from the duty point, the fluid and the installation.
Independent
We are not tied to one manufacturer, so the recommendation can follow the application.
Practical
Lead time, spare part availability and serviceability are part of the decision.