Why can the coke oven flue damper valves completely scrape away residual deposits?

The coke oven flue gate valve employs a spring-loaded self-sealing mechanism and specially designed sealing surfaces. This ensures the sealing surfaces maintain close contact regardless of position, enabling thorough scraping of residual contaminants (such as silt, weld slag, and other deposits) from the sealing surfaces. The sealing surfaces remain undamaged, being overlaid with high-hardness corrosion-resistant alloy materials. Numerous manufacturers have verified that this design not only removes all contaminants (such as silt, weld slag, and other deposits) from the sealing surfaces without causing the slightest damage.

The coke oven flue gate valve employs a wedge-shaped roller-type switching mechanism, enabling effortless valve operation. It also incorporates a warning device to compensate for minor leakage from the sealing surfaces.