Action: After the fire, cover plate heated by a fusible alloy welded joints of three melting off the cover plate, deflector on the guide pin drop to the working position. Thermal expansion of liquid inside the glass bulb. When reached nominal operating temperature, the glass bubble burst, sprinklers watering action. RFII series concealed pendent sprinklers only RFII series hidden a metallic appearance or the appearance of white paint cover plate for authentication together. Note: RFII series of nozzles may not be used in the ceiling of the upper air pressure is greater than the ceiling lower part of the place. Airflow through the support cup will slow down in the fire state drooping head of the operating time. Gold eutectic solder strength is low, should be carefully fitted, the cover plate to unreasonable stress, good Wuhan fm certified gas fire extinguishing equipment products, will make the cover plate joints cracked, the cover plate off. Anyuan Hubei Chong Mechanical and Electrical Equipment Co., Ltd. is engaged in agency for Wuhan fm certified gas fire extinguishing equipment products, sales of US professional company Tyco Fire Products. By virtue of the NFPA codes and standards of a deep understanding of FM, adhering to customer service for the origin and the pursuit of continuous innovation and improvement of its own after years of rapid development has become FM / UL certification of fire protection products in the field of the most active and most efficient supply service providers. RFII series concealed pendent sprinklers only RFII series hidden a metallic appearance or the appearance of white paint cover plate for authentication together. Note: RFII series of nozzles may not be used in the ceiling of the upper air pressure is greater than the ceiling lower part of the place. Downward airflow through the support cup will slow in the next state fire sprinklers operating time. Gold eutectic solder strength is low, Wuhan fm certified gas fire extinguishing products, equipment, installation carefully, fm certification gas fire, cover plate unreasonable stress, make the cover plate joints cracked, the cover plate off. Wuhan fm certified gas fire extinguishing Equipment positive | Year Anyuan Electromechanical | fm certified gas fire by the Hubei Chong Anyuan Electrical Equipment Co., Ltd. to provide. Hubei Chong Anyuan Electrical Equipment Co., Ltd. (www.hbcay119.com) (www.hbcay119.com) is a leader in Wuhan, fire protection equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Anyuan electromechanical leadership in creating the staff warmly welcome all inquiries negotiations to create create a better future for electromechanical Anyuan.