Pump impeller and casing rebuilding
Erosion-corrosion and cavitation reshape impeller vanes and casing profiles, pulling the pump off its head curve and cutting efficiency.
The need for pump impeller and casing rebuilding
BHI Coatings performs pump impeller and casing rebuilding across Alvin and the Texas Gulf Coast. Cavitation and erosion-corrosion keep reshaping impeller vanes and casing wear rings until the pump slides off its head curve. From there it is all one direction: less flow, more power draw, and an energy cost that climbs every running hour. The usual alternative, a re-bladed or replacement impeller, is a long-lead spare plus a balancing job.
How BHI Coatings does pump impeller and casing rebuilding
BHI Coatings rebuilds vane geometry and casing wear areas with cold-cure metal composites such as Belzona 1311 and 1111, then applies a smooth low-friction overcoat to restore the hydraulic profile. Our crew prepares the eroded surfaces, brings them back to the design contour, and finishes them for flow. Because no weld heat goes in, there is no distortion to chase and no reason to rebalance the rotor.
Typically applied with Belzona 1311, Belzona 1111, matched to the service conditions.
The pump gets its design flow and efficiency back, so it draws less power for the same duty. It goes back together without waiting on a long-lead impeller and without a re-balance for weld heat.
More Metal Repair applications
Bearing-bore wear, split-line distortion and oil-leak paths at gasket faces retire compressor, engine and gearbox housings before the internals wear out.
Learn more →Crack and hole repair on casings and equipmentWelding on pressure separators and code-stamped vessels triggers re-stamping, stress relief and thermal distortion that can cost more than the defect.
Learn more →General metal-loss rebuilding compositesMetal loss from corrosion, erosion or pitting retires equipment once it reaches a code-trigger thickness, and weld build-up adds heat distortion.
Learn more →Heat exchanger, tube sheet and water box repairDissimilar tube metals set up galvanic corrosion at the tube sheet and water box, attacking the steel around each tube end and opening leak paths.
Learn more →On-site flange face and nozzle insert repairHeat cycling, gasket-witness machining and dropped tools deform flange faces and corrode nozzle sleeves, so the line leaks and stays out of service.
Learn more →Plain bearing, bushing and bearing-housing repairWorn bearing bores, fretted bushing seats and vibration-loosened housings shift the rotating axis and shorten coupling and seal life.
Learn more →All 11 in Metal RepairThe whole capability in one place, with the work grouped.
See the capability →Contact BHI Coatings
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