KHIA headerKnow-How in Action

VOL X, NO 12

Belzona® Pump Diffuser Protected

 
 

Industry:

Water / Wastewater (WATR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Sewage Treatment Plant in Northern California

 
 

Application Date:

September 1982

 
 

Application Situation:

Centrifugal pump diffuser

 
 

Problem:

Erosion/corrosion and cavitation

 
 

Products:

Belzona® 1311 (Ceramic R Metal)
Belzona® 1321 (Ceramic S Metal)

 

Substrate:

Cast iron

 
 

Application Method:

The application was carried out in accordance with Belzona Know-How Leaflets CEP-1 and CEP-2.

 
 

Belzona Facts:

This pump was in service for seven years with no damage until the unit was removed from service for other reasons. Extending the life of the pump diffuser saved the plant tremendous replacement costs.

 
 

Photographs Description

  1. The diffuser removed for repairs  
  2. Damage on flow surface  
  3. Close up of cavitation pitting   
  4. Repairs in progress using a rotating jig to create the internal shape and dimension without machining
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

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