Classification of fire dampers

1 fire valve, fire control valve, normally open, 70 degrees off, generally installed in the wind pipe through the firewall, the fire off effect, you can set the output signal, smoke more than 70 degrees when the valve is closed, the chain to send (fill) the wind turbine;            ; 2 smoke prevention and control valve, normally open, 70 degrees off, the same, electric butterfly valve, but more than one signal input, can be controlled by the consumer control room remote control to shut down, generally used to send the wind, fire and wind pipe system, the fire can be controlled to control the closure does not need to fill the wind;            ; 3 fire valve, 280 degree fuse shut down, normally open, the output signal, which is similar to the 1, but the fuse temperature is different, the general application of fire smoke pipe through the firewall, smoke temperature exceeds 280 degrees, automatic fuse shut down, power off valve can be closed.               smoke exhaust valve:          ; 1 smoke fire damper (normally closed, open, 280 degree fuse shut down, or manually shut down) is generally applied in the smoke exhaust system, can be installed in the exhaust fan suction port, when the fire control room control to open, closed when the exhaust fan. & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 2. The exhaust valve, with 3 above, the various units of different names, some electric regulating valve called according to its operating temperature of the exhaust valve, some called the fire valve according to the nature of its use, but for the equipment side just put ordinary damper fuse metal for 280 fuse that a.          ; 3 automatic smoke and fire damper (subway), underground railway ventilation, electric gate valve air conditioning system of fire, smoke valve with automatic fire alarm equipment and gas fire system linkage control function. Each fully automatic fire prevention and fire control valve has two independent electric control signals, respectively, by EMCS, gas elimination system monitoring, electric valve control signal are DC24V± 10%. Six independent feedback signals (three are opened in place, three in place) and feedback signals are normally open and passive signal. Smoke exhaust port: if you install the necessary exhaust valve on the pipe, you can use the ordinary single layer of the air inlet can be; otherwise you need to use the type of exhaust gas, which is equipped with a smoke damper.