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VOL XXVIII, NO 236

Belzona® Repairs A 75-Year Old Valve Flapper

 
 

Industry:

Power (POWR)

 
 

Application:

Engines and Casings (ENC)

 
 

Customer Location:

OR, USA

 
 

Application Date:

2013

 
 

Application Situation:

Hydro Dam Check Valve Flapper

 
 

Problem:

Cast Iron flapper disc had developed a crack. The check valve was 75 years old.

 
 

Products:

Belzona 1111 (Super Metal)

 

 

Substrate:

Cast iron

 
 

Application Method:

The application was carried out in accordance with Belzona System Leaflet ENC-1. The plastic applicator was used to form the face in the seal area.

 
 

Belzona Facts:

Because the check valve was 75 years old there was no replacement available. Fabricating a new flapper from steel was just too expensive.

 
 

Photographs Description

  1. Flapper disc showing the crack at 1 o'clock. 
  2. Drilling the crack to place studs. 
  3. Area prepared, studs in place. 
  4. Belzona 1111 applied with reinforcement sheet, applicator taped in place to smooth the seal area.
 
 
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For more information about Belzona visit: www.belzona.com