Fire damper is installed in the ventilation, air conditioning system, the return air duct on the road, usually was turned dampers price, when the gas pipeline fire when the temperature reaches 70 ℃, fusible film fuse, the valve automatically closes in the torsion spring force within a certain period of time to meet the fire resistance stability and fire integrity requirements, from smoke fire retardant effect of the valve. When the valve is closed, the output signal is turned off. 1. The choice of the main damper damper control parameter specifications. 2. damper suitable for ventilation and air conditioning systems, in addition to public buildings, kitchen hood exhaust damper damper systems, operating temperature of 150 ℃, the general ventilation and air conditioning systems with fire dampers operating temperature of 70 ℃. 3. The damper is suitable for pipe ventilation, air conditioning or smoke damper system model, the basic functions of the scope and application of Table 1. 4. The selection of valve should pay attention to the function of the valve, normally open or normally closed, shut down automatically open, close the open hand, manual reset, signal output, remote control and other requirements. 5. If the valve and fan interaction should be used with double micro-switch device. 6. The valve should be steel blade thickness of 2 ~ 6mm, the body of non-combustible material, rotating parts should be corrosion-resistant metallic materials, and flexible rotation. Shall not be less than the thickness of the valve housing 2mm. Yi Rong parts shall comply with recognized standards of the fire department. _ _ Smoke damper damper Dingrui conditioning (certified merchants) by Wu Cheng Ding Rui Air Conditioning Equipment Co., Ltd. Wu Cheng Ding Rui Air Conditioning Equipment Co., Ltd. (www.wcdrkt.com) (www.wcdrkt.com) in fan, ventilation equipment in this area devoted boundless enthusiasm and passion, Ding Rui air conditioning has been customer-centric, for customers The idea to create value, quality, service to win market, and sincerely hope to cooperate with the community to create success, create brilliant. Welcome to the relevant business information, Contact: Qiu Dong before.