[Tianjin Jin Zhongji HVAC purification equipment to recommend the star product - damper] ventilation and air conditioning construction quality finished damper regulations are there? 1. The damper must also comply with the provisions of technical standards damper 70 ℃, and should meet the design and use requirements; 2. The damper should open and close flexible, solid structure, housing tight, corrosion good, smooth surface, no apparent injuries and deformation smoke damper is not due cracks, corrosion and other defects; rotating member 3. damper shall be of wear and corrosion resistant materials, rotating mechanism flexible, reliable braking and positioning device; 4. valve flange and duct flange should match. [Tianjin Jin Zhongji HVAC purification equipment to recommend the star product - damper] installed in the ventilation, air conditioning system, the return air duct on the road, usually was turned on, the gas pipeline fires when the temperature reached 70 ℃, , fusible sheet fuse, the valve automatically closes in the torsion spring force, in a certain period of time to meet the fire resistance stability and fire integrity requirements damper, smoke fire retardant from the valve. When the valve is closed, the output off signal. Smoke fire control valve, normally open, 70 degrees closed, with 1 280 ℃ dampers, but more a telecommunications signal input, remote control can eliminate the control room is closed, generally used for peacetime air, fire up a common air duct system, can control fire off unneeded air make room; normally open type smoke damper, 280 degrees fuse closed, normally open, output electrical signal, and one that is similar to, but different fusing temperature, generally used in fire exhaust pipe through the firewall, the flue gas temperature exceeds 280 degrees when automatic fuse off, you can turn off the exhaust fan interaction. Damper 70 ℃ | Tianjin damper | Tianjin Jin Zhongji valve factory outlets provided by the Tianjin Jin Zhongji HVAC purification equipment. Tianjin Jin Zhongji 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!