Technical parameters # operation voltage / current: DC24V / 0.5A # temperature sensor operating temperature: 70 ℃ # refractory time: 1.5h # Leakage Rate: 290m3 / h · m2 (standard state) # when full drag coefficient: <0.4. Salt spray test specimen will be salt box salt spray test, duct dampers, the latest offer from the open position of the specimen should be securely closed, to test the valve in the actual engineering corrosion resistance. Fire resistance test by fire resistance test, low-cost marketing Shandong duct damper manufacturers two indicators based on the amount of air leakage within the specified time and closed capacity per unit area, fire damper performance, determine the fire resistance of the valve. Installation quality requirements in the daily fire inspection and acceptance of work, I found that construction quality problems caused by the installation of fire exhaust valve open ineffective or defective, Shandong duct dampers latest offer exhaust valves, exhaust port, fire dampers, Fire air reset difficulties. This should lead to the construction side of attention, note the following installation requirements. When the valve is installed on the ceiling or in the duct, low-cost marketing Shandong duct dampers in the ceiling panel manufacturers should or duct wall provided access into the hole, fire dampers production, generally the pore size of not less than 450 × 450mm, Urumqi damper, in the conditions, the ceiling manholes can also be reduced to 300 × 300mm. Products: Electric multi-leaf off valve, with the composition of the sleeve valve imported from Germany PS Series actuators. Within the electric actuator servo system, fire dampers specifications, without reprovision servo amplifier with an input control signal (4-20mADC or 1-5VDC) and single-phase power to control the operation to realize the pressure, flow, temperature, liquid level and other adjustable parameters. Balanced valve plug structure, with good plug stability, easy to produce vibration, low noise sensitivity, allowing the use of large pressure difference, simple connection, which is widely used in flow coefficient, leakage power requirements more stringent , metallurgy, petroleum, chemical, light industry, industrial automation control systems. _ Rui Xincheng damper standard air conditioning (Online) _ Urumqi damper is provided by the Texas Air Conditioning Equipment Co., Ltd. Rui Xincheng. Rui Xincheng Texas Air Conditioning Equipment Co. (www.dzrxckt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Rui Xincheng air conditioning in leadership with the staff warmly welcome all inquiries negotiations to create a better future Rui Xincheng air conditioning.