What are screw pumps used for?

Screw pumps are ideal for handling fuels, oils and lubricants, thanks to their ability to maintain efficiency regardless of fluctuations in viscosity. As lubricating fluids' viscosities are susceptible to change as their temperature changes, the performance of a screw pump is able to remain consistent.

Why would I choose a screw pump over a gear pump?

When it comes to fuel and oils, gear pumps are a more known technology, when infact screw pumps have a lot of benefits. They have a smaller footprint in comparison, provide a less turbulent smoother flow, less noise and vibrations and better mechanical efficiency. For a more detailed comparison read our article https://www.castlepumps.com/info-hub/screw-pumps-vs-gear-pumps

Can screw pumps handle solids in my fluid?

Unlike other positive displacement pumps, screw pumps cannot handle solids so waste oils are usually avoided unless used with a strainer/filter.

Are these screw pumps reversible?

Yes upon request. Being able to operate in both directions makes these screw pumps ideal for tank to tank transfer as well as returning excess liquid out of the pipework when transfer is complete.

Can I use an Azcue screw pump for marine fuel?

Yes! All Azcue triple screw pumps are marine type approved by classification societies including Lloyds, Bureau Veritas and ABS. They are also suitable for low sulphur fuel down to 0.1% in line with the 2020 Global Sulphur Cap.

When would I need a magnetic drive screw pump?

Our Azcue screw pumps are available with optional magnetic coupling. The absence of a mechanical seal to couple the pump and motor eliminates the chance of leaks caused by wear, which is often desirable when the fuel being pumped is flammable.

Are screw pumps self priming?

Yes, screw pumps have excellent suction capabilities without need for a manual priming device.

Need help choosing the right pump or technical advice? Call the team on 01773 533 283.

Magnetic Drive Screw Pumps

Need help specifying the right screw pump? Contact our pump experts today!

Enquire now Call us 01773 533 283

Eliminate Leaks With Our Magnetically Coupled Screw Pumps

Are you sick of the mechanical seals on your pump wearing and causing leaks? Magnetic drive pumps may be your answer! The key design feature of magnetic drive screw pumps is that they do not have a mechanical seal, and instead use magnets to couple the pump head to the motor. This eliminates the chances of leakages caused by the mechanical seal wearing over time, making it a cleaner solution, ideal for pumping chemicals and aggressive fluids that can be potentially dangerous if leaked. Magnetically coupled screw pumps in particular tend to be used for flammable environments where medium viscosity oils, lubricants and fuels are pumped at high pressures thanks to their ability to handle lubricating fluids so efficiently. If you have an application that you think would benefit from a magnetic drive screw pump over a mechanical seal solution, then contact our pump experts for advice selecting the mag drive pump for your application.

4 products

Azcue BT-HM-MG Spacer Coupled Triple Screw Pump

Max Flow Rate: 10M³H
Max Head: 160M
Max Temperature: 160°C
Max Viscosity: 1500 cP
Solids: 0mm
Size: DN25 to DN40

Azcue BT-IL-MG Spacer Coupled Triple Screw Pump

Max Flow Rate: 35M³H
Max Head: 160M
Max Temperature: 160°C
Max Viscosity: 1500 cP
Solids: 0mm
Size: DN50 to DN100

Azcue BT-LH-MG Long Coupled Triple Screw Pump

Max Flow Rate: 190M³H
Max Head: 120M
Max Temperature: 160°C
Max Viscosity: 1500 cP
Solids: 0mm
Size: DN125 to DN150

Azcue BT-LV-MG Long Coupled Triple Screw Pump

Max Flow Rate: 450M³H
Max Head: 120M
Max Temperature: 160°C
Max Viscosity: 1500 cP
Solids: 0mm
Size: DN125 to DN150

FAQs

Triple screw pumps consist of a driving screw and two idler screws. The motor shaft rotates the driving screw which in turns rotates the intermeshing twin idler screws that the fluid passes along.