BELZONA GUIDES GATE VALVE REPAIR

KHIA ID: 1601
Industry: Buildings & Structures (BSTR)
Application: CEP-Centrifugal Pumps (CEP)
Substrate: Cast Iron
Customer Location: Timber handling quay on the Ruhr in North-Rhine Westphalia, Germany
Application Date: June 1997
Products:

Belzona® 1111 (Super Metal)

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”)
Photograph Descriptions
  1. Corrosion to the guides
  2. The completed application after forming
  3. Refitting the valve
  4. Finished repair
Application Situation
1400mm (55") NB Gate Valve
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.
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