Explosion-proof, explosion-proof electrical equipment inside a structure, explosion-proof type of device is to ignite an explosive gas mixture may be part of all enclosed in a shell, the shell can withstand any joints or gaps through the housing structure, penetrate into flammable mixture inside the housing in an internal explosion without damage, flue damper, and does not cause ignition outside from one variety of gas or vapor to form explosive environments (see GB 3836 2 standard). The cause sparks, arcs and dangerous temperature components are placed in a flameproof enclosure, flameproof enclosure makes the device internal space separated from the surroundings. Flameproof enclosure gap, damper unit price, respiration and electrical equipment due to gas permeation, fire dampers installation, so there may be an explosive gas mixture inside, when it exploded, the housing can withstand the pressure generated by the explosion without damage, at the same time Housing construction space can cool flame, reduce the flame propagation velocity or acceleration chain termination, flame or dangerous flame proof product can not cross the gap to ignite the external explosive atmosphere, so as to achieve the purpose of explosion. Flameproof "d" according to its environment allows the use of the type of explosive gas into class I and IIA, IIB, IIC class. The device is suitable for the type of protection zone 1, 2 places. Type of protection: Ex d; Explosion levels: ⅡB; maximum surface temperature: T4 135 ℃; ambient temperature: -20-60 ℃ Humidity: 89% ± 25 ℃; use zones: Zone 1, Zone 2; Environment: gas; Protection class: IP65. Electric damper suitable for ventilation and air conditioning systems have fire protection requirements of the smoke duct, the fire occurred, the operating device at a temperature fuse is blown, the control center of the output power or manual action under DC24V action, quickly close the valve, Liaoning damper cut off the fire and smoke spread along the duct channel. Works (1) The valve usually is always on when the airflow temperature reaches 70 ℃, [1] heat detectors action, the valve is closed; (2) the valve closed by DC24V power supply; (3) manually shut down or manually Reset; (4) the range of 0 ° ~ 90 ° manual adjustment vane opening degree (regulated); (5) the valve closing signal output can be interlocked with other fire-fighting equipment. Advantages damper 1, low air leakage, airtight performance; 2, the electric current consumption small open; 3, strong corrosion resistance and long service life; (made of stainless steel type) 4, Actuated flexible, feedback, interlock Signal accurate. Damper type 1 normally open type smoke damper 2. normally closed smoke damper 3. Remote control type smoke damper (rope-controlled) 4. Automatic reset type smoke damper damper _ Liaoning Rui Xin-conditioned _ damper unit price offered by the Texas Air Conditioning Equipment Co., Ltd. Rui Xincheng. Liaoning damper air conditioning _ _ Rui Xincheng Rui Xincheng damper unit price is Texas Air Conditioning Equipment Co., Ltd. (www.dzrxckt.com) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Cui.