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Azcue VST Vertical Immersion Pump

Azcue VST Vertical Immersion Pump
Flow Rate Up to 2000M³H
Max Head (pressure) Up to 80M
Outlet Sizes DN250 – DN350
Max Temperature 100°C

Flow Rate Up to 2000M³H
Max Head (pressure) Up to 80M
Outlet Sizes DN250 – DN350
Max Temperature 100°C

The Azcue VST Vertical Immersion Pump is similar in design to the VSS model but with a higher flow rate. This cantilever pump is designed specifically for the transfer of large volumes of lubrication oils from a storage tank or container. 

Being a vertical line shaft pump, it means that this model's its motor is separated from the pump head, keeping it above liquid level. As the pump head is located within the fluid, vertically immersed pumps maintain a flooded suction. They are therefore ideal for applications where typically a self-priming pump is required, such as the emptying of tanks, reservoirs, sumps and wells require. This is why they are widely referred to as vertical sump pumps. 

As this series of Azcue pump is contained within the tank it is also well suited to applications where space saving is required or where if the pump was located outside the suction distance would be too long. Vertical column pumps are also a good alternative to submersible pumps for the handling of such high temperature fluids as not only are their seals located outside the fluid protecting them from degrading, they are not affected by the NPSH issues that can occur when pumping a liquid so close to its boiling point.

Based on DIN 24255, the VST immersed vertical shaft pump is manufactured to the same dimensions as alternative models to enable the easy replacement and retrofitting into existing pipework. An additional benefit to enable convenient installation is that the discharge pipe of this vertical column pump is fitted level with the motor. Its bottom bearing lubrication enables dry running of the vertical shaft pump if the operator leaves it running once the container is empty, meaning that start-stop float switches are not required.

Features of the VST Vertical Cantilever Pump:

  • Centrifugal immersion vertical shaft pump
  • DIN 24255 dimensions for easy retrofitting
  • Pump manufactured in Spain
  • Marine type approved by all classification societies
  • Discharge pipe installed level with motor for easy installation
  • Ideal for space saving installations
  • Bottom bearing lubrication for dry running
  • Three phase 50Hz/60Hz motors available. IP55 as standard



The Azcue VST Centrifugal Vertically Immersed Sump Pumps are available with the following material options:


The VST Vertical Immersion Pump is manufactured by Azcue Pumps. As the official UK Agent of Azcue Pumps, Castle Pumps are a leading Bombas Azcue supplier in the UK with unrivalled technical knowledge. Azcue Pumps are a European manufacturer with over 100 years’ experience in type approved pumps for marine and offshore applications. Today their pumps are installed in more than 10,000 vessel builds. Whilst originally developed for the marine market, Azcue Pumps’ reliability in applications that depend upon the safety and operation of a ship saw them become a desirable product in industrial applications involving water, fuels and lubricants.

One of the key benefits of the VST vertically immersed centrifugal pump like the other models in the Azcue range, is that is benefits from interchangeable parts for reduced on board stockholding. We guarantee supply of spares for 15 years from model discontinuation for long term pump servicing., saving the user from having to prematurely replace a pump that just needs maintenance.

Azcue VST cantilever pumps are cast, machined and assembled at their foundry in Spain. Each pump is manufactured to order and designed to fit your process, resulting in greater efficiency and lower overall lifetime cost in terms of wear and energy consumption. Before leaving the factory, pumps are individually tested to confirm performance meets the requirements set out in your enquiry.

Vertical immersion pumps are where the electric motor is located above the fluid and is connected via a long vertical shaft to the pump impellers which are immersed into the fluid. Therefore, the Azcue VST Vertical Immersion Centrifugal Pump is ideal for low vicosity, clean oil transfer where installation space is an issue or when the suction distance would be too long if the pump was outside of the fluid. Typical examples include:

Marine Applications:Industrial Applications:
Transferring large volumes of lubrication oilTransferring large volumes of lubrication oil

Related Products

Related Products

  • Azcue VSS Vertical Immersion Pump

    Azcue VSS Vertical Immersion Pump

    • Up to 700M³H
    • Max. Head 100M
    • Max. Temp 100°C
    • DN32 - DN150 Outlet

    Find out more

Castle Pumps are fully accredited to enable you to buy with confidence. Our accreditation includes: Our accreditation A division of the CTS Group, Part of Flow Max Ltd.