70 ℃ fire control valve apply to have the ventilation and air conditioning system, fire safety requirements, when disaster occurs, the temperature of fuse fuse fusible ring 70 degrees. The valve is closed, exhaust system for the operation of fire dampers fuse at 280 degrees. The valve is closed, exhaust system for the operation of fire dampers fuse at 280 degrees. Valve closed, cutting off the fire and smoke spread along the duct channel, the valve blade can be adjusted in the range of 0-90 degrees. Function (1) temperature of 70 degrees fuse action, fire dampers installation, the valve closes. (2) manually turned on or reset. (3) to manually change the opening angle of the blades. (4) According to the system requirements, increasing numbers of telecommunications equipment operation and fire interlock system or other systems. Construction and installation points 1. Valve mounting position, altitude, direction import and export must meet the design requirements, the connection should be firmly tight. 2. The valve can be used in various forms of the end portion of the pipe connection. The most important connections are threaded, flanged and welded connections. When the flange connection, if the temperature exceeds at 350 ℃, due to the bolts, flanges and gaskets creep relaxation, damper unit price, you should choose high temperature bolt material. 3. The valve must be visually inspected prior to installation, fire dampers picture, the valve plate should be consistent with existing national standards GB12220 "Universal Valve logo" requirement. For working pressure greater than 1.0MPa and the role played off valve in the main pipe, it should be the strength and tightness test, passing behind the prospective use. Other valves may be tested separately, stay system pressure test test. 4. strength test, the test pressure is 1.5 times the nominal duration of not less than 5min, the valve housing, packing should be no leakage. 5. Tightness test, Shangqiu damper, test pressure of 1.1 times the nominal pressure; test pressure within the test duration should remain unchanged, the time specified in Table 2, to valve sealing surface without leakage for qualified . Damper excellent quality, standardization, interchangeability. Board quality thick. Fusing timely. Fire dampers, normally open, 70 degrees or 280 degrees closed, generally installed in the duct through the firewall, fires off effect, you can set the output electrical signal, the temperature exceeds 70 degrees or 280 degrees the valve is closed, the linkage to send (s) the fan is turned off. Damper installed in the ventilation, air conditioning system, the return air duct on the road, usually was turned on, when a fire in the pipeline when the gas temperature reaches 70 ℃, fusible film fuse, the valve automatically closes damper operates in the torsion spring force Shangqiu fire dampers, Rui Xincheng air conditioning (view) provided by the Texas Air Conditioning Equipment Co., Ltd. Rui Xincheng. Rui Xincheng Texas Air Conditioning Equipment Co. (www.dzrxckt.com) is a professional "axial fans, mixed flow fans, roof fan, Francis fan, fire temperature exhaust fan, the wind," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so that the "Rui Xincheng" brand has a good reputation. We adhere to the "service first, customer first" principle, so 瑞鑫诚 air conditioning won the trust of customers all of the fan, ventilation equipment, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!