KHIA headerKnow-How in Action

VOL XXXI, NO 197

Belzona® Resolves The Rusty Flange Face

 
 

Industry:

Local Authorities & Municipalities (LOMU)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Spokane Valley, WA, USA

 
 

Application Date:

October 2014

 
 

Application Situation:

Flange face on a pump mounted on a firetruck.

 
 

Problem:

The firetruck pump sits for periods of time without being used. During this time, water sits against the flange face resulting in rust and a poor surface for the o-ring seal to sit against. This results in a lot of leaking water when the pump gets used.

 
 

Products:

Belzona 1341 (Supermetalglide)

 

Substrate:

Steel

 
 

Application Method:

The application was carried out in accordance with a modified Belzoa Know-How System Leaflet CEP-10. The surface was prepared with MBX Bristle Blaster. Then the first coat was brushed on as usual. The second coat was brushed on and then a 3/4" rigid plastic former was bolted against the face to form a solid, smooth, clean surface.

 
 

Belzona Facts:

When this flange rusts and begins to leak, the pump has to be taken apart, the flange removed and machined, then re-assembled. This uses both man hours and resources on a regular basis. The amount of Belzona 1341 that was used here was maybe $10.00 USD and will outlast the original method. Good small jobs lead to bigger ones down the road. 

 
 

Photographs Description

  1. Machined flange face
  2. Opposing flange face with seal
  3. Surface prepared with MBX Bristle Blaster
  4. Completed application of Belzona 1341
 
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