KHIA headerKnow-How in Action


Valve Repair And Protection With Belzona



Power (POWR)



Valves, Pipes and Fittings (VPF)


Customer Location:

Power plant, Egypt


Application Date:

June 2004


Application Situation:

Automatic chemicals valve.



Old polypropylene lining was worn and damaged due to chemical attack.



Belzona® 1311 (Ceramic R-Metal)

Belzona® 1321 (Ceramic S-Metal)

Belzona® 5811 (Immersion grade)



Cast Iron


Application Method:

Application was carried out in accordance with modified version of Belzona Know-How system leaflet VPF-1 and VPF-2. A former was made by casting Belzona® 5811 to take the inner shape of the valve. The eroded areas were then rebuilt with Belzona 1311, using the Belzona® 5811 former to restore the inner curvature profile of the valve. After finishing the surface it was coated with Belzona® 1321 to protect the valve.


Belzona Facts:

Belzona repaired the valve and protected it using simple economic means. It was important to retain the inner dimensions of the valve as this affects the performance of the valve.


Photographs Description

  1. The valve before repair
  2. Former made by casting with Belzona® 5811
  3. Belzona® 1311 applied to the valve
  4. Two valves were repaired and protected
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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