Fire damper is installed in the ventilation, air conditioning system, the return air duct dampers road specification, usually was turned on when the gas pipeline fire when the temperature reaches 70 ℃, fusible film fuse, the valve automatically closes in the torsion spring force within a certain period of time to meet the fire resistance stability and fire integrity requirements, from smoke fire retardant effect of the valve. When the valve is closed, the output signal is turned off. Fire and smoke control valve, normally open, 70 degrees closed damper function, with one, but more than a telecommunications signal input, control room by eliminating remote control is off, generally used for peacetime air, fire, wind up a common duct system, fire When can control the wind up turning off unneeded rooms; exhaust valve installed in the exhaust system of the pipeline, the general was usually closed, manual or electric opened fire, from the smoke effect. Closed within the exhaust pipe when the temperature reaches 280 ℃ flue damper making, within a certain period of time to meet the fire resistance stability and fire integrity requirements, from the exhaust valve function. Smoke damper normally closed (NC, open telecommunications number, 280 degrees blown off, or manually turn off) generally used in exhaust systems, exhaust fan can be installed at the inlet of a control to open the control room when the fire extinction, When the chain can also be turned off to close the exhaust fan. Tai'an damper damper performance _ _ 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!