Municipal Water Pump Rebuild

Client: A City MunicipalityIndustry: Municipal / Potable Water

Challenge

Pump was headed for the scrapyard — severe full-body corrosion, badly eroded cutwater, damaged wear-ring seat, and flange damage.

Belzona Solution

Rumford showed the utility how the pump could be repaired rather than scrapped — and how, with records kept correctly, the rebuilt asset could keep producing income. All four problem areas (full-body corrosion, the eroded cutwater, the wear-ring seat, and the flange face) were rebuilt with Belzona 1111 (Super Metal). The rebuilt internals were then coated with Belzona 1341 (Supermetalglide), a hydrophobic coating that converts turbulent flow into laminar flow to cut energy consumption.

Belzona 1111 (Super Metal)
Belzona 1341 (Supermetalglide)

Result

Approximately 5% reduction in electrical consumption. Both Belzona 1111 and Belzona 1341 are NSF/ANSI 61 approved for potable water. Asset saved from scrap and returned to service.

Project Photos

Before: severe full-body corrosion and pitting throughout the lower casing.

Before: eroded cutwater area and damaged wear-ring seat.

Before: heavily pitted suction bore and flange face.

Before: close-up of erosion damage inside the waterway.

After: casing rebuilt with Belzona 1111 and coated with Belzona 1341.

After: cutwater and wear-ring seat restored to original profile.

After: smooth, hydrophobic Supermetalglide finish through the waterway.

After: suction bore and flange face rebuilt and coated.

Impeller and shaft assembly coated ahead of reassembly.

Completed rebuild — pump reassembled, painted, and ready to return to service.