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Belzona® Repairs A Gate Valve Crack





Valves, Pipes and Fittings (VPF)


Customer Location:

Oregon, USA


Application Date:

October, 2017


Application Situation:

36" gate valve on a crane ship.



The disk of the gate valve had a large crack extending from the seat rings on the edge to the center of the disk.



Belzona 1111 (Super Metal)

Belzona 9341 (Reinforcement Sheet)



Ductile Iron


Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflet VPF-8. Procedure was followed out on both sides of the disk.


Belzona Facts:

Due to the composition of the ductile iron welding would have been difficult. Welding also would have introduced heat stresses as well as the potential for galvanic corrosion. ABS approved this method to get the vessel back in water with minimal downtime.


Photographs Description

1. Crack in disk of gate valve

2. Holes drilled, tapped and studs inserted. Crack terminated.

3. Reinforcement sheet incorporated to add strength.

4. Completed application.

Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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