Q: the selection of fire damper essentials profiling a: fire damper is installed in the central air conditioning duct system, work principle is the temperature of the metal stem extremely easily, use gravity utility and the utility of the spring mechanism close the valve. When the fire broke out, the flame into the duct, high temperature made the fusible alloy melted on the valves, or make the memory alloy initiation deformation to close the Industrial Valves semi-automatic, used in air duct with the occasion of the fire zone throughout. 1. Electric fire damper to choose main stem for parameter specification, etc. 5. If the valve and fan gang should be chosen with double micro switch device. The thickness of the exterior of the valve can not less than 2 mm. 3. Fire damper is suitable for use in ventilation and air conditioning or exhaust system piping. Heat sensitive components should be fire department of licensing standards. 6. Body blade should be steel plate, thickness of 2 ~ 6 mm, body of non-combustible material manufacturing, rotating device shall be deemed appropriate in the corrosion resistance of metal materials, and flexible rotation. 2. Fire damper is suitable for use in ventilation and air conditioning system, in addition to the public building in heaven oil discharge YanZi system with fire damper, operating temperature is 150 ℃, the common ventilation and air conditioning system with fire valve action temperature is 70 ℃. 4. The function of the valve should be paid attention to when choosing the valve open normally closed, still as usual semi-automatic close open, hand Marine valve closed to open, manual reset and signal output, long stem. 。 Notes to the order: The national standard) A, A: B: product name, model, nominal size medium and temperature, pressure range C: whether there is attachment, delivery time, and special requirements so that we can correct selection for you. Second, if the valve has been selected by design unit of our company model, please order according to the valves parameters directly with our sales center. Three, it is very important when you use the occasion or the environment is more complex, would you please provide design drawings and detailed parameters, our engineers experts will concentrate on review and analysis for you. We can provide you with professional solutions, including design, customization, complete, operation and service. We've been working on the valve leader in the field of industry, to provide you with the latest knowledge of the Industrial Valves, the best service, best technical adviser. Thank you for visiting our website, if you have any questions, you can call us, we will be dedicated to provide you with quality services. The factory provides professional ball valve, butterfly valve, gate valve, globe valve, check valve, relief valve, safety valve, Marine valve, oil Industrial Valves, hydraulic control valve and other kinds of valves.
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