Product Introduction
A fire damper is a normally closed valve that can be opened by a 24V DC power supply from the control center or manually. It automatically closes at a temperature of 280℃, and manual reset is required. Its function is: when the smoke temperature reaches 280℃, people have basically evacuated, and smoke exhaust has no practical significance at this point. However, the smoke now carries fire, so the valve automatically closes to prevent the fire from spreading. The smoke exhaust outlet of the system can also use a normally closed fire and smoke exhaust outlet, eliminating the need for a smoke exhaust fire damper on the branch pipe. In the event of a fire, the outlet can be opened by a 24V DC power supply from the control center or manually, and it automatically closes when the smoke temperature reaches 280℃, with manual reset required. A smoke exhaust fire damper should also be installed at the entrance of the smoke exhaust fan room to prevent the fire from spreading to the floor where the fan room is located.