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Belzona Lobe Repairs Avoid Delays



Water / Wastewater (WATR)


Áreas Know-How:

Positive Displacement Pumps (PDP)


Cliente / ubicación:

Water treatment plant, Canada


Fecha de aplicación:

February 2001


Situación de aplicación:

Rotary lobe pumps used in waste water treatment plant. The lobes have a diameter of 70 cm and a thickness of 13 cm.



the rubber lobes wear but there is a delay of 4-6 weeks for the delivery of these lobes.



Belzona® 2131 (D&A Fluid Elastomer)





Método de aplicación:

The application was carried out in accordance with Belzona Know-How System Leaflet PDP-9. A mould, lined with Belzona® 1341 was created from new lobes and used to cast replica lobes using Belzona® 2131 around the steel centres which are grit blasted to achieve maximum adhesion. 


Hechos Belzona:

Many lobes have been produced using this process. This method is not cheaper but it reduces stock and saves a lot of production time by avoiding supply delays.


Descripciones de fotografías

  1. Preparation of the mould coated with Belzona® 1341 
  2. Lobe position in the mould 
  3. The newly cast lobe in the mould 
  4. The lobe is ready to be back in service.
Case study pic one


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