Duct damper manufacturers product quality requirements embodied in three aspects: the amount of air leakage around the valve under specified test conditions of pressure, air leakage test piece per unit area is not more than 700Nm3 / (h · m2), duct dampers Latest offer in order to test the performance of the valve closed after the closure. Temperature sensor operational performance test of fire dampers, exhaust valve temperature sensing element, duct dampers are the latest offer by the constant temperature water bath, a predetermined temperature of the oil bath, through no action and action and test the temperature whether it can according to the requirements of Close accurately. Close Close reliability test on the test stand operation 250 times, low-cost marketing Shandong duct damper manufacturers specimen should be able to close the open position flexible and reliable, all parts should be no significant wear, deformation and damage affecting its sealing performance . In order to test the reliability of closure. Products: Electric multi-leaf off valve, with the composition of the sleeve valve imported from Germany PS Series actuators. There are servo actuator system, without reprovision servo amplifier, Zhoukou damper, 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 for flow coefficient, sales damper, leakage requirements relatively strict electricity, metallurgy, petroleum, chemical, light industry, industrial automation control systems. Features # 70 ℃ fuse action, fire dampers classification, the valve automatically closes. # DC24V electrical signal input valve quickly shut down automatically. # Manually shut down. # Output off signal, interlock air conditioning fan stops. # Manual reset opening. # Smoke with fire dampers usually always open, 280 ° C fuse action closed. # Manual adjustment of the valve opening angle, adjust the air flow. Zhoukou damper | Rui Xincheng Air conditioning | dampers produced by the Texas Air Conditioning Equipment Co., Ltd. Rui Xincheng. Zhoukou damper | Rui Xincheng Air conditioning | damper making Texas Rui Xincheng 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.