Coating Applications for Valves in Corrosive Environments

In corrosive industrial environments, Valve components are often exposed to media such as acids, alkalis, or salt spray, making them highly susceptible to surface corrosion. This can significantly impact sealing performance and service life. To ensure effective protection, specialized coating technologies such as epoxy or polyurethane-based coatings are employed, as these materials offer excellent chemical resistance and wear resistance.

During application, the valve surface must first be treated with sandblasting or chemical cleaning to remove oil and rust, ensuring the substrate is clean and dry. The coating is then evenly applied via spraying or dipping processes. After curing, the coating's thickness and integrity should be thoroughly inspected. The choice of coating type should be based on the properties of the corrosive media and the operating temperature, in order to provide long-lasting protection, reduce maintenance costs, and improve system reliability.