First, the product description applies: fire control valve is usually installed on the ventilation duct, usually normally open valve, the valve blade can be from 0 to 90. C within a five-speed adjustment, when the air flow temperature reaches 70. C, the valve closes. Performance: 1, the temperature to 70. C, a thermal fuse action, the valve closed by the tension spring force. 2, manually shut down, manual reset. 3, manually change the opening angle of the blades. 4, after the valve is closed, can occur telecommunications numbers. Second, the product composition and technical performance constitute major components: fire control valve main components including valves, blades, blade shaft, bushings, temperature fuse, using reliable temperature fuse, electric actuators. Fire control valve, 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, body surface rust and heat-resistant paint spraying, painting uniform surface without rust and meet the requirements of fire-resistant, and with a solid, seamless paint and peeling, no loose fasteners, damage phenomenon. b) Blade: high quality steel. C) blade shaft: Using Φ≥12mm quality steel shafts. d) sleeve: the brass sleeve. e) temperature fuse: the fuse temperature at 70. C and 280. C are two, is approved for production, qualified testing 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) the valve is closed and reliable: more than 250 times the number of continuous work. h) to withstand vibration frequency of 100 beats / min, acceleration of 30m / s2, which lasted two hours in Britain earthquake test, still comply with the relevant standards. No loose fasteners and displacement phenomenon. i) fire control valve opening angle of the blades can be 15. ~ 90. Adjustment (set to 5-8 files) within range. j) Fire resistance: 70. C fire control valve fire resistance rating of not less than 1.5 hours, 280. Section C damper valve fire resistance rating of not less than three hours. k) the amount of valve leakage under normal conditions, the pressure is on both sides of the valve 300pa, its leakage greater than 700Nm3 / h.m2; in refractory conditions on both sides of the differential pressure valve for 300pa, its leakage amount of not more than 1000Nm3 / h.m2. Third, environmental conditions 1, ambient conditions: 10 normal ambient temperature. C ~ 45. C / 98% relative humidity, 280 fire conditions. C / 0.5h. 2, storage conditions: ambient temperature 0. C ~ 45. C / 98% relative humidity. 3, the control power supply: voltage 24 ± 2.4V, 0.7A operating current is not greater than four, the technical standards and requirements of a damper, making the production of the product complies with the following standards: GB15931-1995 "smoke damper test method" GB15930-1995 " damper test method "GB50045-1995" fire protection design of tall buildings "GB16-87" architectural design code for fire protection "GB50243-2002" Ventilation Engineering Construction Quality Acceptance "GB50067-82" garage, parking garage, parking lot design Fire Code "BGJ232-82" electrical installations for construction and acceptance "GBJ304-88" Ventilation Engineering Quality Inspection and Evaluation Standards "GBJ300-88" construction and installation of uniform standards for quality inspection evaluation "