Dezhou Plumper ventilation plant is specialized in the production of central air-conditioning equipment manufacturers supporting the end. Products in full accordance with the national standard, standard production line, advanced equipment suppliers smoke duct dampers, technical stability. Our main domestic large enterprises do OEM OEM dampers, normally open, 70 ℃ or 280 ℃ closed damper Ex-factory, usually installed in the duct through the firewall, fires off 70 damper effect size, you can Set the output electrical signal, the temperature exceeds 70 ℃ or 280 ℃ when the valve is closed, the linkage to send (up) the fan is off. 280 degrees dampers must be shut down at high temperatures, it will signal back to the controller through the input module, then control exhaust fan stops. To prevent the fire from spreading to other fire district through exhaust pipes. On the exhaust fan inlet manifold should be set when the flue gas temperature exceeds 280 ℃ can turn itself off when the smoke damper and exhaust fan should be interlocked so that the flue gas exhaust pipe when the temperature exceeds 280 ℃ closed on their own prevent the spread to other parts of the fireworks. Otherwise, close only exhaust fan, can not prevent the spread of smoke and fire through the pipeline. Ex-damper manufacturers | Jincheng damper | Rich ventilation provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (#) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Plumper ventilation equipment into the brilliant and you work for a better future!