What is the definition of a pneumatic dampers? A pneumatic damper is a mechanical device that is used to reduce the amount of air or gas flow in a system. It works by utilizing a valve or other mechanism to restrict the flow of air or gas. The damper is usually placed near the end of a line or in a pipe or ductwork system, and it can be either manually or automatically operated. The primary purpose of a pneumatic damper is to reduce noise, vibration, and energy losses in a system. It can also be used to control the speed of air or gas flow in a system. The pneumatic damper works by providing a resistance to the air or gas flow, which decreases the flow rate and velocity of the air or gas. This helps to reduce noise and vibration, as well as energy losses due to turbulence. Additionally, it can be used to regulate the temperature and pressure in a system as well.