The Problem
A combination of de-Alumininification over the surface of the impeller and cavitation at root of the vanes was causing a significant reduction in the efficiency of this pump.
The Solution
Belzona 1121 used to smooth the surface prior to application of Belzona 1341 system. Belzona 2141 was then applied 8″ on either side of the vanes to protect from cavitation. The cost of labor and product was much lower than the cost to replace the impeller. From current draw, the application has also increased the efficiency of the pump, but no formal efficiency increase have been calculated.
Products Applied
Belzona 1341, Belzona 1121, Belzona 2141