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Belzona® Repairs This Vacuum Pump And Increases Its Efficiency



Power (POWR)



Mechanical Power Transmission (MPT)


Customer Location:

Fossil fuel power station in Australia


Application Date:

November 1993


Application Situation:

Water ring vacuum pump for main condenser.



Corrosion damage to the end covers and impeller, as well as heavy souring of the gland packing locations on the impeller shaft caused insufficient vacuum pumping and loss of pressure.



Belzona® 1131

Belzona® 1341 (Supermetalglide)



Cast iron and steel


Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflets MPT-1 and CEP-7.


Belzona Facts:

Customer achieved an increase in efficiency. In particular the end covers were rebuilt with Belzona® 1131 for additional security in service. As the clearances increase between the vanes of the rotor and the end covers, the Belzona® 1131 will prevent hang up, and provide a smooth hydrodynamic surface.


Photographs Description

  1. Scored area of the shaft
  2. Undercoat area of the damaged shaft
  3. Application of Belzona® 1131
  4. The rebuilt shaft after machining of Belzona® 1131
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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