1. The construction and installation of fire dampers can edit and fan, exhaust fan interlock. 2. The operation of the valve mechanism side should be not less than 200mm of headroom to facilitate maintenance. 3. Install the valve must be checked before the valve operating mechanism is intact dampers, the action is flexible and effective. 4. Wind damper should be installed in close proximity to the wall or floor damper tube segment 70 ℃, fire dampers on both sides of the partition wall from the wall surface should not exceed 200mm, dampers on each side of the pipe within the range of 2.0m and insulation materials should be non-combustible material. 5. The damper should set up a separate hanger to prevent pipe deformation affecting its performance in case of fire. 6. damper fuse should be installed in a large piece of the side facing the fire risk. Technical parameter editing A × B A1 × B1 A2 × B2 bxy nd L H1 H2 H3 L0 L1 L2 L3 weight 320 × 180 375 × 234 400 × 260 8 5 3 16-?12 180 245 164 245 150 515 642 735 round dampers _ Rich ventilation equipment (certified) _ Jinzhong damper provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (www.frtfsb.com) (www.frtfsb.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. Rich ventilation equipment in leadership with the staff warmly welcome all inquiries negotiations to create rich, ventilation a better future.