A damper valve is a valve that is used to control the flow of air in a duct system. The damper valve is usually located at the end of the duct system and is used to regulate the amount of air that is allowed to pass through the duct. Damper valves are used in a variety of applications, such as HVAC systems, and are available in a variety of sizes and configurations. What is a damper valve? A damper valve is a device that is used to regulate the flow of air or other gases in a system. It is often used in HVAC systems to control the flow of air through the ductwork. The damper valve is controlled by a knob or lever that is used to open or close the valve. This allows the user to control the amount of air or gas that is allowed to flow through the system. How does a damper valve work? A damper valve is a valve that is used to control the flow of air in a duct system. The damper valve is usually placed in the duct near the air handler or furnace. The damper valve is controlled by a knob