Function:
1. The valve will been automatically closed when passing through air temperature reach or beyond 280℃.
2. Fire resistance period is 1.5hour.3. Output turn off signal,interconnected control air condition fan.
4. It can adjust air volume through resetting & start and manually adjust the opening angle of valve.
application area:
Usually installed in the ventilation pipe of air condition which need fireproofing.
Production material:
1. Common galvanized、hot galvanized plate、stainless steel plate.
2. Axle between blade and frame is made of hot galvanized plate or stainless steel
3. The rotary sleeve between the blade shaft and the frame is made of bronze