Screw Pumps
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Triple screw pumps for fuels & oils
Castle Pumps have been supplying screw pumps to the industrial and marine market for over 15 years. Able to handle fluctuating flow rate and pressure without losing efficiency, screw pumps are ideal for clean, lubricating fluids such as fuels, oils and lubricants. Our range of quality screw pumps includes twin screw pumps and triple screw pumps. Whilst gear pumps are suitable for many similar applications; screw pumps have better mechanical efficiency, operate with less noise and fewer vibrations and providing less turbulence and a smoother flow. Read our comparison guide here if you need more information or talk with our technical sales engineers.
products
- Max Flow Rate: 450M³H
- Max Head: 120M
- Max Temperature: 100°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Size: DN200 to DN250
- Max Flow Rate: 10M³H
- Max Head: 160M
- Max Temperature: 160°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Size: DN25 to DN40
- Max Flow Rate: 10M³H
- Max Head: 50M
- Max Temperature: 100°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Size: DN25 to DN40
- Max Flow Rate: 10M³H
- Max Head: 160M
- Max Temperature: 160°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Size: DN 32 to DN40
- Max Flow Rate: 35M³H
- Max Head: 160M
- Max Temperature: 160°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Sizes: DN50 to DN100
- Max Flow Rate: 190M³H
- Max Head: 120M
- Max Temperature: 160°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Size: DN125 to DN150
- Max Flow Rate: 30M³H
- Max Head: 500M
- Max Temperature: 100°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Size: DN25 to DN65
- Max Flow Rate: 190M³H
- Max Head: 120M
- Max Temperature: 160°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Size: DN125 to DN150
- Max Flow Rate: 450M³H
- Max Head: 120M
- Max Temperature: 100°C
- Max Viscosity: 1500 cP
- Solids: 0mm
- Size: DN200 to DN250
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.
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.
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
Unlike other positive displacement pumps, screw pumps cannot handle solids so waste oils are usually avoided unless used with a strainer/filter.
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.
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.
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.
Yes, screw pumps have excellent suction capabilities without need for a manual priming device.
