Damper Applicability: fire control valve is usually installed on the ventilation duct, usually normally open valve, the valve blade can be adjusted within five levels 0 ~ 90 ℃, when the airflow temperature reaches 70 ℃, the valve closes. Fire control valve into manual and electric fire control valve models. Damper structure constituting the compositional structure (1) Main components: fire damper main components including valves, blade, blade shaft, sleeve, temperature fuse, the controller and the like. Body and blades are steel material, leaf through stamping, body machined from, the choice of bronze bushings, using reliable temperature fuse, electric actuators. (2) fire dampers rugged, sensitive, reliable performance to meet the different air area, different pressure and temperature and humidity requirements, is technologically advanced, mature and reliable products. A, the valve body using δ≥2mm quality steel, welds smooth damper price, body surface rust and heat spray paint, painted a uniform surface without rust and meet the requirements of fire-resistant fire dampers, and combined secure, seamless and peeling paint, loose fasteners no smoke dampers price, damage phenomenon. B, Blade: high quality steel prices smoke damper blade thickness δ = 2 mm. C, blade shaft: The φ≥12mm quality steel shafts. D, sleeve: the brass sleeve. E, temperature fuse: two kinds of 70 ℃ and 280 ℃ temperature fusing temperature fuse, is approved for production and inspection of products. F, manually shut down: manual drawstring closure, sensitive, reliable, and after a close grip reset normal, sensitive and reliable. Rotating flexible rope, stuck phenomenon does not occur. G, electric closed: by DC24 ± 2.4V / 0.7A current, the damper can automatically shut down. H, fuse close: 70 ℃, 280 ℃ temperature fuse dampers were 73 ± 0.5 ℃, 285 ± 2 ℃, should be able to operate off within 1min. Smoke dampers | damper | dampers provided by Wu Cheng Ding Rui Air Conditioning Equipment Co., Ltd. Wu Cheng Ding Rui Air Conditioning Equipment Co., Ltd. (www.wcdrkt.com) (www.wcdrkt.com) 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 Dingrui air conditioning and you hand into the brilliant, for a better future!