Jie Weinuo Star Industrial Co., Ltd. [] recommended damper damper, normally open, 70 degrees or 280 degrees closed, usually installed in the duct through the firewall, fires off the role, you can set the output electrical signal fire exhaust port, temperature over 70 degrees or 280 degrees exhaust port when the valve is closed, the linkage to send (up) the fan is off. Installed in the central air-conditioning duct system, works easily fusible alloy remote exhaust port temperature control, by the action of gravity and spring mechanism to close the valve. [Jie Weinuo Industrial Star recommendation - Industrial production of electric damper] Jie Weinuo normally open damper installed in the ventilation, air conditioning system, the return air duct on the road, usually was turned exhaust port speed, when the pipeline fire When the air temperature reaches 70 ℃, fusible film fuse, valve exhaust port exhaust port Hangu Winds _ _ Jie Weinuo Industrial fire engineering installation provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) strong, credible, in Tianjin fans, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jie Weinuo Industrial and you hand into the brilliant, for a better future!