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Azcue BT-HH ATEX Long Coupled Triple Screw Pump

Fuel Transfer & Lubricant Pumps

Azcue BT-HH ATEX Long Coupled Triple Screw Pump
Flow Rate Up to 30M³H
Max Head (pressure) Up to 500m
Outlet Sizes DN 25mm – 65mm
Max Temperature 100°C


Flow Rate Up to 30M³H
Max Head (pressure) Up to 500m
Outlet Sizes DN 25mm – 65mm
Max Temperature 100°C

The Azcue BT-HH ATEX Long Coupled Triple Screw Pump is a large, heavy duty model characterised by its significantly higher pressure capabilities than the other screw pumps in the Azcue range. As a positive displacement pump, screw pumps are able to handle lubricating fluids under fluctuating flow rates, pressures and viscosities without losing efficiency. This, combined with its high suction makes the BT-HH suitable for applications where suction is difficult or high pressure is required, and hazardous applications thanks to its ATEX motor.

Their long coupled design makes these self priming screw pumps easier to maintain as you can access the pump head without removing the motor first. They are also more robust for continuous use as it has additional bearings in the pump head to share the strain of operation. The nature of the screw pump design means it can be used where suction capabilities are difficult such as pumping over long distances or where the pump is located above the fluid

This self priming triple screw pump is horizontal in design with top mounted suction and discharge. These Aczue pumps can be supplied upon request with a magnetic coupling, which eliminates the wear and eventual leaking that mechanical seals can incur.

Features of the BT Series Screw Pump:

  • High pressure, long coupled self priming screw pump
  • ATEX approved
  • Pump manufactured in Spain
  • Marine type approved by all classification societies
  • Additional bearings in pump head to share the strain of operation
  • Top mounted suction and discharge
  • Horizontal orientation
  • Mechanical seal as standard - magnetic coupling on request
  • Available with pressure relief valve
  • Smaller footprint than an equivalent performing gear pump
  • Low NPSH
  • Suitable for lube and fuel oils from 2-1500cSt
  • 230v, three phase 50Hz/60Hz motors available. IP55 as standard.


The Azcue BT-HH Horizontal Self Priming Triple Screw Pump is available with the following material options:

 CAST IRON
GG25
NITRIDED CAST DUCTILE IRON
GGG40
NITRIDED STEELHARDENED STEEL
CASINGX X  
DRIVING SPINDLE   XX
IDLER SPINDLE X  X

The BT-HH Long Coupled Screw Pump is manufactured by Azcue Pumps, for whom Castle Pumps are the UK agent. 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 BT-HH triple screw 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 BT-HH pump 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.

The viscosity of lubricating fluids such as fuels and oils can change with a change in the temperature, unlike fluids such as water. Whereas a centrifugal pump’s performance is affected by fluctuations in the viscosity of the fluid, screw pumps operate just as efficiently. For that reason, given the Azcue BT-HH's extremely high pressure capabilities, this triple screw pump is ideal for the following applications:

Marine Applications:Industrial Applications:
  • Fuel oil cargo pumps for vessel loading and unloading
  • Fuel transfer such as marine gas oil (MGO), heavy fuel oil (HFO) and low sulphur (LSFO)
  • Lube oil transfer between containers
  • Circulating lubricants around a system to ensure the engines and gearbox
  • Thermal oil pump for burner/boiler feed
  • Fuel oil boosting
  • Fuel transfer pumps for handling diesel and fuel oil
  • Lube oil transfer between containers
  • Circulating lubricants around a system to ensure the engines and gearbox
  • Fuel oil separator
  • Thermal oil pump for burner/boiler feed
  • Fuel oil boosting

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      Castle Pumps are fully accredited to enable you to buy with confidence. Our accreditation includes:

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