[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - exhaust valve exhaust valve]: For use either branch duct dampers price, smoke exhaust valve is normally open sub-region, and because of fire uncertainty region, which exhaust valve should be open again be closed, and therefore should be electric. Either a smoke partition fire dampers, can have the fire control center in the area smoke exhaust valves open multi-leaf smoke vents, other partitions exhaust valves closed. If the smoke partition not use either branch duct, the duct that is in parallel with a dedicated primary exhaust pipe only, then the exhaust valve on the exhaust manifolds are normally closed, and with the smoke detectors linked electromagnetic valve manual reset . General non-use either the exhaust valve exhaust system is also true. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - smoke damper] definition given in the national standards: 1. smoke damper fire damper in smoke-ventjng system installed in the mechanical exhaust system pipe, usually was turned on, when the fire inside the exhaust pipe when the flue gas temperature reaches 280 ℃ closed, and in a certain amount of time to meet the leakage of smoke and fire integrity requirements, from the effects of smoke fire retardant across the valve. Smoke damper is generally made up of body, blades, actuators and temperature sensors and other components. Pressure outlet | Beijing damper | Tianjin Jinzhong Ji damper manufacturer provided by the Tianjin Jinzhong Ji HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.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 the group into the brilliant and you work for a better future!