KHIA headerKnow-How in Action

VOL XXV , NO 27

Belzona® Guides Gate Valve Repair

 
 

Industry:

Buildings & Structures (BSTR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Timber handling quay on the Ruhr in North-Rhine Westphalia, Germany

 
 

Application Date:

June 1997

 
 

Application Situation:

1400mm (55") NB Gate Valve

 
 

Problem:

On both of the trapezoidal guides in the body there was severe metal loss caused during operation of the gate. The material loss was on average 6-8mm, occasionally 10mm (0.4”), over a length of 1600mm (63”)

 
 

Products:

Belzona® 1111 (Super Metal)

 

Substrate:

Cast Iron

 
 

Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflet VPF-4. The guides were grit blasted to remove the corrosion. Moisture was driven out of the cast iron, followed by a second grit blasting. Using forming methods the guides were rebuilt, and then deburred prior to reassembly.

 
 

Belzona Facts:

Since this initial application was carried out a further two valves have been completed for the customer.

 
 

Photographs Description

  1. Corrosion to the guides
  2. The completed application after forming
  3. Refitting the valve
  4. Finished repair
 
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