农历转阳历查询

Marine fire damper is intended for ventilation duct with fire requirement. When on fire, the temperature inside the duct reaches 70℃, fire damper will automatically close quickly to avoid fire spreading. According to the shape, there are rectangular & round type. According to the control way, there are manual, electrical, pneumatic type.The blade can be single blade or multi-blades. The fireproof class can reach A60.

设计标准：CB / T3557-1995

防火等级：A0，A15，A30，A60

主要零件：气动执行器，温度检测器，风门体，风门板，主轴，法兰。