Our Damper valves are abrasion, heat and corrosion resistant and can be used in a variety of applications from media transfer to isolation and venting.A damper is a valve or plate that stops or regulates the flow of air Inside a duct, chimney, VAV box, air handler, or other air handling equipment.This damper valve was designed to suit all corrosive and non-corrosive gas environments, high and low temperature service as well.