Smooth, Continuous Fluid Movement
Screw pumps are suitable for applications that require continuous fluid movement with low pulsation and reduced turbulence. Rapid helps clients assess whether this pumping principle is suited to the process.
94 years of pumping confidence
Screw Pumps for Reliable Oil, Fuel and Industrial Fluid Transfer
Rapid Allweiler supplies and supports screw pump solutions for oils, lubricating liquids, fuel handling, marine and offshore engineering, power generation, chemical processing, food, pulp and paper, and industrial applications.
Designed for continuous, low-pulsation fluid movement, screw pumps are well suited to applications where efficiency, reliability, low noise, long service life and controlled transfer of lubricating or low-lubricity fluids are important.
Screw Pump Range
Rapid supports screw pump solutions for a range of industrial, marine, power and process applications.
Three screw pumps use three specially shaped screws to create sealed chambers that move liquid axially from the suction side to the discharge side. They are commonly used for oils, lubricating liquids, fuel oils and selected industrial fluids.
The design supports continuous, low-pulsation transfer, high efficiency, low noise and long service life. Optional built-in pressure relief valves may be available for overload protection, depending on the application and configuration.
Common applications include:
- Lubricating oil transfer
- Fuel oil transfer
- Power generation support
- Marine and offshore engineering
- Oil firing systems
- Chemical and petrochemical applications
- Pulp and paper applications
- Food industry support
Twin screw pumps are used in applications where reliable positive displacement transfer is required across a range of fluid conditions. They can be suitable for selected viscous, lubricating, non-lubricating or process fluids depending on the pump design and application.
Rapid can help clients assess whether a twin screw pump, three screw pump or another pump technology is best suited to the duty.
Common applications include:
- Oil and fuel transfer
- Process fluid movement
- Industrial transfer duties
- Marine and offshore applications
- Chemical and petrochemical support
- Viscous fluid handling
- Lubrication system support
What Are Screw Pumps?
Screw pumps are positive displacement pumps that move liquid by using rotating screws to create sealed chambers. As the screws rotate, the liquid is moved continuously from the suction side to the discharge side.
Unlike some pump types that create higher levels of pulsation or turbulence, screw pumps are designed to move liquids smoothly and continuously. This makes them useful for oils, lubricating liquids, fuel oils and other fluids where controlled, low-pulsation transfer is important.
Allweiler three screw pumps are used for oils and other lubricating liquids, as well as non-lubricating liquids or liquids with poor lubricating properties. The liquid is moved continuously without pulsation, turbulence, crushing or loss of lubrication, making screw pumps suitable for sensitive fluid transfer and reliability-focused industrial applications.
Rapid helps clients select screw pump solutions based on the fluid, viscosity, lubricity, pressure, flow rate, temperature, duty cycle and installation environment.
How Rapid Solves Common Screw Pumping Requirements
Rapid supports screw pump enquiries by helping clients match the correct pump technology to the fluid, duty and operating environment.
Oil and Lubricating Liquid Transfer
Screw pumps are widely used for oils, fuel oils and lubricating liquids. Rapid helps select pump solutions based on viscosity, lubricity, flow, pressure, temperature and system requirements.
Support for Poor-Lubricity Liquids
Allweiler screw pumps may be used for non-lubricating liquids or liquids with poor lubricating properties, depending on the configuration and operating conditions. Rapid helps review suitability before recommending a solution.
Long Service Life and Low Maintenance
Allweiler screw pump designs include features that support long service life, including hardened and ground screws and hydraulically driven idler spindles that are not subject to mechanical wear.
Practical Maintenance Access
Selected screw pump designs allow the complete insert unit to be removed while the pump casing remains in the piping, supporting easier maintenance and reduced disruption.
Variable Speed Drive Suitability
Screw pumps can be well suited for use with variable speed drives, helping support flexible flow control where the application requires it.
94+ Years Experience
Local Manufacturing
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keeping industry flowing Pumping Across Industry
Rapid works across sectors where pump reliability directly affects production, safety, continuity and cost control.
Our pump solutions support:
Applications
Screw pumps are used in fluid handling applications where smooth transfer, reliability and suitability for oils or lubricating liquids are important.
Used to move lubricating oil through industrial, marine, power and mechanical systems.
Screw pumps are commonly used for fuel oil handling, oil firing and fuel circulation applications.
Power generation environments use screw pumps for oil, fuel, lubrication and support systems where reliability is essential.
Screw pumps are used in marine and offshore systems for fuel, lubrication, transfer and support applications.
Selected screw pumps can support compatible chemical and petrochemical fluid transfer where fluid properties and materials have been reviewed.
Screw pumps may be used in selected pulp and paper applications involving oils, lubricants or compatible process fluids.
Screw pumps can support selected food industry applications where pump suitability, fluid characteristics and hygiene requirements have been reviewed.
Used to support oil firing applications where consistent oil transfer and pressure support are required.
Screw pumps may be suitable for selected viscous fluids, depending on viscosity, temperature, lubricity and system conditions.
Local Manufacturing & Workshop Capability
Rapid supports screw pump clients with technical guidance, workshop capability, spare parts assistance, repairs and aftermarket service.
Because screw pumps are often used in critical oil, fuel and lubrication systems, reliable local support can make a significant difference to maintenance planning and long-term performance.
Technical Application Support
Rapid assists clients with fluid review, pump selection, documentation requests and application guidance.
Workshop and Repair Capability
Our workshop capability allows Rapid to support inspection, repairs, maintenance and refurbishment requirements where appropriate.
Spare Parts and Aftersales Support
Rapid can assist with screw pump spare parts enquiries and aftermarket guidance for compatible pump ranges.
Replacement Pump Assessment
Where an existing screw pump is underperforming, worn, noisy, leaking or no longer suitable, Rapid can help assess the duty and recommend the next step.
Lifecycle Support
Rapid supports clients beyond the initial enquiry through service guidance, spares assistance and practical pump support.
How Rapid Helps You Select the Right Pump
Step
1
Share Your Fluid and System Details
The process starts with your application information. This may include fluid type, viscosity, lubricity, required flow rate, pressure, temperature, suction conditions, duty cycle and existing pump details.
Step
2
Application and Pump Technology Review
Rapid reviews the duty conditions and determines whether a screw pump, centrifugal pump, progressive cavity pump or another pump technology is best suited to the application.
Step
3
Pump Range Recommendation
Based on the application, Rapid recommends a suitable screw pump solution, including whether a three screw or twin screw pump is appropriate.
Step
4
Quotation and Technical Confirmation
Once the technical direction is confirmed, Rapid provides a quotation and supporting product information where required.
Step
5
Supply, Spares and Aftermarket Support
Rapid supports supply, spare parts, repairs and aftermarket requirements depending on the client’s needs.
94+ Years Experience
Local Manufacturing
Engineering Quality
Downloads Technical Resources
Rapid can provide supporting information to help clients evaluate screw pump options and submit accurate enquiries.
Available or Recommended Resources
Centrifugal pump brochure
Pump enquiry form
Technical datasheets
Company profile
Maintenance guidance
Application information checklist
Product information for selected pump types
Need a Screw Pump for Oil, Fuel or Industrial Fluid Transfer?
Whether you need a new screw pump, replacement parts, technical selection support, repair assistance or documentation, Rapid can help you identify the correct pump solution for your fluid and operating conditions.
Send us your fluid type, viscosity, flow, pressure and application requirements, and our team will guide you through the next step.
pump selection guide
Why Choose Rapid?
Rapid combines the strength of South African manufacturing heritage with German engineering association and decades of practical application knowledge.
Clients choose Rapid for:
94+ Years Experience
Local Manufacturing
Engineering Quality
Application Specific Pumps
Aftermarket Service
Long-Term Technical Guidance
Frequently Asked Questions About Screw Pumps
Screw pumps are used for oils, lubricating liquids, fuel oils, lubrication systems, marine and offshore applications, power generation, oil firing, chemical and petrochemical support, pulp and paper, food industry support and selected industrial fluid transfer duties.
A screw pump uses rotating screws to form sealed chambers. As the screws rotate, liquid is moved continuously from the suction side to the discharge side.
A screw pump is a positive displacement pump that moves fluid in sealed chambers. A centrifugal pump uses an impeller to create flow. Screw pumps are often better suited to oils, lubricating liquids, viscous fluids and applications where smooth, low-pulsation transfer is important.
Yes. Allweiler three screw pumps are used for oils and other lubricating liquids, as well as some liquids with poor lubricating properties depending on the application and configuration.
Selected screw pumps may be used for non-lubricating liquids or liquids with poor lubricating properties, but suitability depends on the pump configuration, fluid properties and operating conditions. Rapid can help assess this.
Allweiler three screw pumps are described as single-channel and self-priming, making them suitable for selected applications where self-priming capability is required.
Yes. Screw pumps can be well suited for use with variable speed drives, depending on the system and operating requirements.
Useful information includes the fluid type, viscosity, lubricity, required flow rate, pressure, temperature, suction conditions, duty cycle, installation environment and any existing pump details.
Yes. Rapid can assess the existing pump, duty conditions, fluid properties and system requirements before recommending a suitable replacement or support path.
Yes. Rapid can assist with screw pump spare parts enquiries, workshop inspection, repair support and aftermarket service for compatible applications.