2. Exhaust Industrial Valves, with the above 3, each unit is not the same as the name, some called according to its operating temperature exhaust valve, according to the nature of its use is called fire damper, but to the facilities only replace ordinary fire damper fusing metal with 280 degree fuse. 3. The semi-automatic smoke fire damper ( The subway engineering use) Subway ventilation and air conditioning system of fire and smoke exhaust valve with semi-automatic fire detection and alarm facilities, and the function of gas fire extinguishing system linkage stem. Each full semi-automatic smoke fire damper has two independent electric stem signal, goodbye by elements of the EMCS, gas system, monitoring, curb the signals are DC24V & amp; plusmn; 10 one hundred percent signal. 。 Each full semi-automatic smoke fire damper has six independent feedback signal ( Three open in place, locked in place) Feedback signals are passive normally open contacts. Q: the classification of the electric fire damper answer: 1. Fire dampers, fire dampers, normally open, 70 closed, general installed in the duct through the firewall, fires off the utility, you can set the output signals, smoke valve closed when more than 70 degrees, chain to send ( Fill) The wind trigger closed; 2. Smoke fire control valve, normally open, 70 closed, the same, but more than an electrical signal input, can be made of control room closed long stem, used for daily air and fire in the common duct system, fire don't have to fill the wind can stem turned off at the end of the room; 3. Fire damper, 280 degree fuse closed, normally open, the output signals, the similar and 1, but different fusing temperature, common used in fire smoke exhaust pipe through the firewall, smoke semi-automatic fuse closed when the air temperature over 280 degrees, can be closed chain smoke exhaust fan. Smoke: if you are in the line installed the indispensable exhaust valve, with the usual single louvers tuyere; Otherwise need board Marine valve type smoke, it also with smoke fire damper of institutions. Exhaust valve: 1. Smoke fire damper ( Normally closed, telecommunications, open, 280 degree fuse closed, or manually shut down) Common used in the exhaust system, can install in the exhaust fan inlet, a fire by control room stem to open and close the chain can also be closed when the smoke exhaust fan. 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 valve, 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 valve, hydraulic control valve and other kinds of valves.
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