The check damper is mainly composed of shell, blade and shaft. It can be installed either vertically or horizontally. The material of shaft and blade is stainless steel SS316, and the shell is Q235-B.
Working principle: When the air flows, the blade opens automatically, and the blade automatically closes by its own gravity to prevent the air flow back.
Features: close tightly, open sensitively, small airflow resistance, beautiful appearance, high strength, low noise.