Talk to us today: +44 (0) 1773 533 283

My Enquiry List: 0 itemsView list

  • MODELS AVAILABLE FROM STOCK Shorter lead times. Your deadlines met.

  • APPLICATION EXPERIENCE YOU CAN RELY ON We'll specify the ideal solution for your process.

  • LOWER TOTAL LIFETIME COST SOLUTIONS Efficient, easy to maintain & long life design.

Refine your results by:

Update Results


From Stock
Air Operated Pumps
AODD Pumps
Barrel Pumps
Booster Sets
DIN24255/ EN733 Pumps
Borehole Pumps
Centrifugal Pumps
Flexible Impeller Pumps
Gear Pumps
Hand Pumps
Jet Pumps
Lobe Pumps
Magnetic Drive Pumps
Multistage Pumps
Peripheral Pumps
Peristaltic Pumps
Piston Pumps
Progressive Cavity Pumps
Screw Pumps
Self Priming Pumps
Side Channel Pumps
Split Casing Pumps
Submersible Pumps
Vane Pumps
Vertical Immersion Pumps
Vertical Inline Pumps


Aquaculture Pumps
ATEX Pumps
Ballast Pumps
Bilge Pumps
Biogas Pumps
Boiler Feed Pumps
Cargo Pumps
Chemical Pumps
Condensate Pumps
Cooling Pumps
Deck Wash Pumps
Dosing Pump
Dredging Pumps
Fire Fighting Pumps
Fish Waste Pumps
Food Transfer Pumps
Fuel Transfer Pumps
Fume Scrubber Pumps
Grease Pumps
Grey Water Pumps
High Viscosity Pumps
Hygienic Pumps
Irrigation Pumps
Lubricant Pumps
Marine Fuel Pumps
Pressure Booster Pumps
Reverse Osmosis Pumps
Sea Water Cooling Pumps
Sea Water Injection Pumps
Sea Water Service Pumps
Sewage Pumps
Sludge Pumps
Swimming Pool Pumps
Thermal Oil Pumps
Waste Water Pumps
Water Circulating Pumps
Water Transfer Pumps
From Stock


From Stock
Azcue Pumps
Bombas Trief
CAT Pumps
Savino Barbera


From Stock
Cast Iron
Stainless Steel

Max. Flow Rate

From Stock
0-1M³H (For Dosing)
16M³H - 50M³H
51M³H - 100M³H
101M³H - 200M³H
201M³H - 500M³H
501M³H - 1000M³H
1001M³H - 2000M³H
2001M³H - 4000M³H


From Stock
Flooded Suction
Self Priming


From Stock


From Stock
51M - 100M
101M - 200M
201M to 300M
301M - 400M
401M - 500M
501M +


From Stock

Update Results

Water Circulating Pumps Page 3

Cold and hot water recirculation pumps for closed loop systems

Water circulation pumps recirculate round a closed system; a system that operates in a loop where the liquid being transferred never comes into contact with atmospheric pressure. For this reason, they are sometimes referred to as a closed loop circulating pump. 

Industrial Case Studies

Common applications where a circulating water pump is used include cooling systems, water heaters, swimming pools, HVAC and boilers. Due to their ability to handle water efficiently at reasonable flow rates and pressures, recirculating water pumps are usually of centrifugal design. Although this is not always the case, close loop circulating systems are often continuously operated for example in boiler or engine cooling. For these applications, large, heavy duty water recirculation pumps are required to bear the strain. 

Sort by:

Azcue VB & VA Vertical Inline Centrifugal Pump

  • Up to 2000M³H
  • Max. Head 190M
  • Max. Temp 120°C
  • DN150 - 250 Outlet

Azcue C Vertical Multistage Centrifugal Pump

  • Up to 40M³H
  • Max. Head 200M
  • Max. Temp 120°C
  • DN 32-100 Outlet

Liverani GR ADPE Explosion Proof Side Channel Pump

  • Up to 30 M³H
  • Max. Head 40M
  • Max. Temp 165°C
  • ¾” - 2½” Outlet
  • Max. Viscosity 100 cP

Liverani INV Side Channel Pump

  • Up to 58.7 M³H
  • Max. Head 60M
  • Max. Temp 165°C
  • ¾” - 3” Outlet
  • Max. Viscosity 100 cP

Liverani SEP Side Channel Pump

  • Up to 54 M³H
  • Max. Head 55M
  • Max. Temp 165°C
  • ¾” - 3” Outlet
  • Max. Viscosity 100 cP

Liverani Special Side Channel Pump

  • Up to 13.8 M³H
  • Max. Head 30M
  • Max. Temp 100°C
  • ¾” up to 2” Outlet
  • Max. Viscosity 100 cP

Liverani Special FM Side Channel Pump

  • Up to 54 M³H
  • Max. Head 55M
  • Max. Temp 100°C
  • 1¼” - 3” Outlet
  • Max. Viscosity 100 cP

Azcue CA Close Coupled Self Priming Centrifugal Pump

  • Up to 300M³H
  • Max. Head 105M
  • Max. Temp 130°C
  • DN1.25” - DN150 Outlet

Azcue MO Close Coupled Side Channel Pump

  • Up to 9M³H
  • Max. Head 225M
  • Max. Temp 90°C
  • DN 1” – 1.5” Outlet

Azcue VSS Vertical Immersion Pump

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

Azcue TK Horizontal Multistage Centrifugal Pump

  • Up to 800M³H
  • Max. Head 400M
  • Max. Temp 120°C
  • DN25 - 300 Outlet

Azcue VTK Vertical Multistage Centrifugal Pump

  • Up to 300M³H
  • Max. Head 400M
  • Max. Temp 120°C
  • DN25 - 150 Outlet

46 Results


If you are unable to find the product that you are looking for then please contact us via or +44 (0) 1773 533 283


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

Our accreditation