KHIA headerKnow-How in Action


Belzona® Protects Wastewater Pump For 25 Years



Water / Wastewater (WATR)



Centrifugal Pumps (CEP)


Customer Location:

Wastewater Treatment Plant, Vancouver, BC


Application Date:

October 2014


Application Situation:

Wastewater pump



This wastewater pump was originally rebuilt in 1989 with Belzona when the lower portion of the pump bowl had eroded severely causing small pinholes to develop in the side casing.



Belzona 1311 (Ceramic R Metal)

Belzona 1321 (Ceramic S Metal)



Cast Iron


Application Method:

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


Belzona Facts:

This pump has remained in constant service since the 1989 repair. It was taken out of service for a major inspection. The inspection revealed that small sections of the original repair were showing signs of delamination along the edges so it was decided that these would be repaired while the pump was down.


Photographs Description

1. The pump bowl after the lower portion had been grit blasted.

2. Rebuilding the lower bowl section with Belzona 1311 in progress.

3. Additional rebuilding underway.

4. The rebuilt areas and the entire lower portion of the bowl received 2 coats of Belzona 1321.

Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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