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Belzona® Restores Vacuum Pump Affected By Deep Erosion



Mining and Quarrying (MINQ)



Centrifugal Pumps (CEP)


Customer Location:

Mine, Peru


Application Date:

April 2008


Application Situation:

Interior of the central casing of a large liquid ring vacuum pump



Seal water drags solids deeply eroding the central body all around, on both sides of the central ribbing weakening the casing and even making a hole at one point.



Belzona 1311 (Ceramic R-Metal)

Belzona 1341 (Supermetalglide)



Cast iron


Application Method:

The application was carried out in accordance with the Belzona Know-How System Leaflet CEP-5. It was locally blasted and filled in using Belzona 1311 and was covered with Belzona 1341.


Belzona Facts:

For each hour that the plant is closed, the mine loses significant revenue. The delivery of a new casing would take too long. Using Belzona has saved production and the repair was completed in just 6 hours, during the plant’s general maintenance downtime planned for one day. Thanks to Belzona, the plant was never left without the vacuum pump.


Photographs Description

  1. Disassembly of components 
  2. Grooves caused by erosion all around on both sides 
  3. Refilled with Belzona 1311 
  4. Reconstructed area was later covered with Belzona 1341.
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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