Flange Protection Using Two Methods

Contents:
Step-by-Step: How To Brush Apply Belzona 3412
Video: Belzona Flange Face Forming

Proven for over 10 years, Belzona’s flange protection systems eliminate the need for conventional cut and weld methods involving hot work and allow for a simple application in emergencies, especially in areas with limited access, such as on offshore platforms. Therefore, the Belzona Flange Face Forming kit is a unique repair kit developed to aid flange protection by combating the common problems with mating surfaces of flanged joints, such as heat distortion, corrosion, and erosion. In conjunction with Belzona 2-part epoxy repair composites such as Belzona 1111 (Super Metal), this flange repair kit provides a complete package solution that is cost-effective and simple to implement.

Flange Protection Using Belzona 3412

Belzona 3412 is a liquid-applied membrane system that offers long-term flange protection from exterior damages. The durable system can be used for flange protection of different shapes, sizes, or configurations from crevice, galvanic and atmospheric corrosion and completely encapsulate the flange to exclude any moisture.

When used in combination with the release agent/corrosion inhibitor, Belzona 8411, the coating can be easily cut, peeled back, and resealed to allow inspection and maintenance of fastenings. Once the required maintenance has been completed, the membranes will fold back to their original positions and can be sealed with a further quantity of Belzona 3412. The system can be brush- or spray-applied.

How To Brush Apply Belzona 3412

Step 1: Clean the surface of the pipe and flanged connections to remove all dirt, grease, and other surface contaminants.

Step 2: Thoroughly abrade the surface with abrasive paper (sandpaper) or wire brush to remove all gloss and provide a good key for the Belzona coating.

Step 3: Apply masking tape over the two bond areas to protect the pipe areas from accidental overspray.

Step 4: To allow assess to bolts and flanges in the event of required maintenance, we recommend the application of Belzona 8411 by brush or spray. This also provides an optimum level of corrosion protection.

Step 5: Once the Belzona 8411 is touch dry, remove the masking tape.

Step 6: Re-apply fresh masking tape.

Step 7: To seal the gap between the flange faces, cut a strip of Belzona 9341 to the correct width and apply it over the gap.

Step 8: Fit plastic caps over the nuts/bolts.

Step 9: Empty the entire contents of the Belzona 3412 base and solidifier and thoroughly mix in the bowl provided for at least three minutes.

Step 10: Using a spatula, transfer the mixed Belzona 3412 to the flange face and bolts.

Step 11: Using long, light strokes, brush the material over the entire area ensuring it does not extend outside the prepared area.

Step 12: While the first coat of Belzona 3412 is still wet, bed strips of Belzona 9311 around the circumference of both ends of the pipe and the flange.

Step 13: Mix and apply the second coat of Belzona 3412.

How To Spray Apply Belzona 3412

Step 1: Clean the surface of the pipe and flanged connections to remove all dirt, grease, and other surface contaminants.

Step 2: Thoroughly abrade the surface with abrasive paper (sandpaper) or wire brush to remove all gloss and provide a good key for the Belzona coating.

Step 3: Apply masking tape over the two bond areas to protect the pipe areas from accidental overspray.

Step 4: To allow access to bolts and flanges in the event of required maintenance, we recommend the application of Belzona 8411 by brush or spray. This also provides an optimum level of corrosion protection.

Step 5: Once the Belzona 8411 is touch dry, remove the masking tape.

Step 6: Re-apply fresh masking tape.

Step 7: To seal the gap between the flange faces, cut a strip of Belzona 9341 to the correct width and apply it over the gap.

Step 8: Fit plastic caps over the nuts/bolts.

Step 9: Empty the entire contents of the Belzona 3412 base and solidifier and thoroughly mix in the bowl provided for at least three minutes.

Step 10: Fill the cartridge of the Belzona Spray Gun.

Step 11: Spray the material over the entire area ensuring it does not extend outside the prepared area.

Step 12: While the first coat of Belzona 3412 is still wet, bed strips of Belzona 9311 around the circumference of both ends of the pipe and the flange.

Step 13: Mix and apply the second coat of Belzona 3412.

Interested in Purchasing Belzona’s Repair Composites and Protective Coatings?