A Verderhus screw channel submersible pump required corrosion protection due to service in an aggressive environment. Subject to constant submersion in effluent produced at a food processing plant the pump was showing signs of corrosion on the external surfaces.

Corrocoat recommended that the pump be
abrasive blasted to Sa2½, and that a specified a surface profile of 50µm be achieved. The external surface of the pump was then coated with Polyglass VEF to a DFT of 1250µm.

Polyglass VEF is suitable for immersion environments where superior resistance to chemical attack is required within the full pH range. It also has excellent resistance to demineralized water and many solvents.

The specialist coating will provide excellent
ongoing corrosion protection for the pump and will ensure an extended service life in such an aggressive environment.