purpose

Applied to the supply and return air ducts of ventilation and air conditioning systems with fire prevention requirements, when a fire occurs, the temperature fuse will activate and the valve will quickly close. Cut off the spread of fire and smoke. Spread along the air duct.

function

·Manually close or reset;

·Normally open, when the airflow temperature reaches 70 ℃, the fuse will activate to automatically close the valve.

·Output valve closing signal.

·It has air volume adjustment function.