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Azcue AN VP/EP Long Coupled Self Priming Centrifugal Pump

Circulating Pump & Sea Water Cooling Pump

Azcue AN VP/EP Long Coupled Self Priming Centrifugal PumpAzcue AN VP/EP Long Coupled Self Priming Centrifugal PumpAzcue AN VP/EP Long Coupled Self Priming Centrifugal Pump
Flow Rate Up to 700M³H
Max Head (pressure) Up to 100M
Outlet Sizes DN32-150
Max Temperature 190°C

Flow Rate Up to 700M³H
Max Head (pressure) Up to 100M
Outlet Sizes DN32-150
Max Temperature 190°C

The Azcue AN VP/EP Centrifugal Self Priming Pump is essentially the AN long coupled centrifugal pump complete with either a vacuum or electric priming pump for installations with difficult suction conditions. The vacuum priming pump would be the better solution for longer suction distances thanks to its ability to dry run for short periods of time.

The AN is a large, heavy duty horizontal centrifugal pump with good flow and pressure capabilities. As it is long coupled, this model of centrifugal water pump is easier to maintain as you can access the pump head without having to remove the motor first, and is also more robust for continuous use thanks to the additional bearings in the pump head to share the strain of operation.

Based on DIN 24255, the Azcue AN is manufactured dimensionally the same as other pumps allowing the direct replacement of existing single stage centrifugal pumps from other manufacturers, for applications involving clean fluids such as water and low viscosity fuels. As it can be supplied with a double mechanical seal cooling system, fluids are able to be handled up to 190°C which makes the AN suitable as a thermal oil pump.

This series of self priming centrifugal pump have a back pull out design, which allows the motor to be removed without disconnecting the pump from the pipework, and maintenance to be less time consuming and complex. Thanks to the wear rings, there is small clearance between the impeller and pump casing, preventing wear to these parts. Wearing rings are designed to be replaced every now and then, preventing the more expensive replacement of the impeller or casing. 

These Azcue pumps also have separate shafts in the pump head and motor meaning that if there is ever an issue with one shaft, there is no need to replace it all; a benefit over other pumps on the market that have one continuous shaft from head to motor. 

  • Long coupled, single stage centrifugal pump
  • Comes with either vacuum or electric self priming pump
  • DIN 24255 dimensions for easy retrofitting
  • Pump manufactured in Spain
  • Marine type approved by all classification societies
  • Horizontal design
  • Available in cast iron, 316 stainless steel and bronze for seawater
  • Back pull out design for simple maintenance
  • Separate shafts in the pump and motor
  • Low NPSH
  • Mechanical seals or gland packing
  • Casing wear rings to prolong casing and impeller life
  • 230v, three phase 50Hz/60Hz motors available. IP55 as standard.
  • Available with double mechanical seal cooling system for fluids up to 190°C
  • Assembly without alignment
  • Supplied flanged as standard
  • Suitable for thermal oils including Marlotherm, Duratherm, Paratherm, Multitherm, Mobiltherm and Dowtherm
Marine Applications:Industrial Applications:
  • Sea water cooling pump
  • General sea water service
  • Grey water with low solid content
  • Aquaculture recirculation systems
  • Ballast water pump
  • Fire fighting 
  • Low viscosity fuel and lubrication transfer
  • Boiler feed water pumping
  • Marine fume scrubber systems
  • Closed loop HVAC circulating and cooling pumps
  • General water transfer, supply and service
  • Waste water with low solid content
  • Water pressure booster pump
  • Swimming pool circulation systems
  • Agriculture and lawn irrigation
  • Low viscosity fuel and lubrication transfer
  • Boiler feed water pumping
  • Thermal oil pump

Key Benefits:


The Azcue VP/EP AN Long Coupled Centrifugal Self Priming Pump is available with the following material options:

G-Cusn5ZnPb (Rg5)
G-CuSN10Zn (Rg10)
X5CrNiMO 18 10


Castle Pumps help customers to solve problems when quoting and specifying equipment. In this case study, the client was experiencing costly downtime due to a worker in the distillery having to keep manually priming the pump when it lost its prime. In order to overcome this issue, Castle Pumps provided two self-priming pumps; one as the main pump and one for standby to completely limit the risk of downtime.



Castle Pumps receive a wide range of enquiries for a number of industry applications. Farming fish on land is an unusual but increasing market which Castle Pumps have adapted to in order to specify and supply pumps for requirements posed for within this market. A centrifugal pump was selected to match their requirements, which was fitted with accessories and a bespoke control panel to ensure all of their specifications were met.

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