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VOL XXVI, NO 121

Belzona® Lobe Repairs Avoid Delays

 
 

Industry:

Water / Wastewater (WATR)

 
 

Application:

Positive Displacement Pumps (PDP)

 
 

Customer Location:

Water treatment plant, Canada

 
 

Application Date:

February 2001

 
 

Application Situation:

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

 
 

Problem:

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

 
 

Products:

Belzona® 2131 (D&A Fluid Elastomer)

 

Substrate:

Steel

 
 

Application Method:

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. 

 
 

Belzona Facts:

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.

 
 

Photographs Description

  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.
 
 
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For more information about Belzona visit: www.belzona.com