Installed in the ventilation, air conditioning system, the return air duct dampers on the road, usually was turned newest damper manufacturers, when a fire in the pipeline gas when the temperature reaches 70 ℃, fusible film fuse, the valve in the automatic torsion spring force Close dampers and sales of manufacturers, in a certain period of time to meet the fire resistance stability and fire integrity requirements, since the role of smoke fire retardant effect of the valve. When the valve is closed, the output off signal. Duct segments damper manufacturers in low-cost, fire damper on both sides of the partition wall 4. The damper should be installed in close proximity to the wall or floor surface from the wall should not be greater than 200mm, dampers on both sides of each 2.0m wide pipes and insulation materials should be non-combustible material. 5. The damper should set up a separate hanger to prevent pipe deformation of its performance in case of fire. 6. The damper of the fuse link should be installed in the larger side facing the fire risk. Damper processing factory | Anyang damper | Yanda air conditioning provided by Wu County Yanda air-conditioning plant. Wu County Yanda air-conditioning plant (www.wcydkt.com) (www.wcydkt.com) strong, credible, Shandong Texas heat, refrigeration and air conditioning equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Yanda into the brilliant air conditioning and you work for a better future!