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Refurbishment Of Large Diffuser Pumps With Belzona



Power (POWR)



Centrifugal Pumps (CEP)


Customer Location:

Power station, Northern Ireland


Application Date:



Application Situation:

Two 48” cooling water circulating pumps



The pumps, each weighing over eleven tonnes without the motor, were failing to deliver sufficient flow to satisfy customer demand.



Belzona® 1111 (Super Metal)

Belzona® 1311 (Ceramic R-Metal)

Belzona® 1341 (Supermetalglide)

Belzona® 5811 (Immersion Grade)



Cast iron


Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflets CEP-1, 3, 4 & 5.


Belzona Facts:

After refurbishment, the pumps were returned to the power station, where they were installed, aligned and commissioned. Both pumps were returned to service within an eight week period and within budget. The customer has expressed his great satisfaction with the service provided and is already reaping the benefits of the newly coated pumps.


Photographs Description

  1. One of the diffuser pumps after disassembly
  2. Degree of damage clearly evident on the diffuser vanes
  3. Coated diffuser vanes
  4. Coating of the pump internals and bell mouth with Belzona® 1341 and Belzona® 5811 externally
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